Database Users

Encoding MKV....always get lip sync problems?

I have tried loads of converters and can get GOOD quality videos if i like with no lip sync problems but i want EXCELLENT quality video like the encodes i had for my HD2 but just can't find a stable converter which works all the time.
The best video quality i can get is by using....
Winmenc then DVD Catalyst 3 then Any dvd Converter.
I can get stunning video from Winmenc but some clips either dont display the picture on the phone or have lipsync problems.
DVD Catalyst comes a close second for video quality and all clips play but still get lip sync problems.
Any dvd converter gives good quality video with no lip sync problems but picture is nowhere as good as Winmenc.
Anybody got any custom profiles or programs to get excellent quality video with no lip sync problems?
Thanks for any help

Try this..http://forum.xda-developers.com/showthread.php?t=478050
I absolutely love it

benko286 said:
Try this..http://forum.xda-developers.com/showthread.php?t=478050
I absolutely love it
Click to expand...
Click to collapse
Thanks
I think i may have tried an older version of this.....will give it another go.
What profile are you using?
Cheers.

I've been using Super(c) for years with custom profiles and it works as perfect as anything I've yet heard about or seen. Plenty of such settings can be adjusted in it perfectly.
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- Sent via my HTC Desire -

I use AnyDvD Converter Pro, playback is flawless using the following settings:
VIDEO
custom mp4
800x480 (or any other scaled resolution with 800px width that preserves the aspect ratio, unless source was low res to begin with, in which case i'll stick to the source's original res)
x264 video encoding
bitrate 2000kbps (again,provided the original bitrate was higher of course, otherwise,source's value )
25/23.97fps depending on source of course
AUDIO
aac audio encoding
bitrate 320kbps
sampling 48000/44100 depending on source
2 channels
I have converted uber quality 1080p rips ( 20-30Gb worth, 20-25Mbps video bitrate, 1536+kbps 7.1 DTSHD audio) with these settings, and the results are GREAT . I havent tried pushing the video bitrate any higher, but it might playback nicely with higher values as well.

MacCarron said:
I use AnyDvD Converter Pro, playback is flawless using the following settings:
VIDEO
custom mp4
800x480 (or any other scaled resolution with 800px width that preserves the aspect ratio, unless source was low res to begin with, in which case i'll stick to the source's original res)
x264 video encoding
bitrate 2000kbps (again,provided the original bitrate was higher of course, otherwise,source's value )
25/23.97fps depending on source of course
AUDIO
aac audio encoding
bitrate 320kbps
sampling 48000/44100 depending on source
2 channels
I have converted uber quality 1080p rips ( 20-30Gb worth, 20-25Mbps video bitrate, 1536+kbps 7.1 DTSHD audio) with these settings, and the results are GREAT . I havent tried pushing the video bitrate any higher, but it might playback nicely with higher values as well.
Click to expand...
Click to collapse
Is it possible for you to upload a sample video encoded with above settings to try on our desires??

Double Twist
Why don't you try to use DoubleTwist?
It looks like iTunes, and when you sync any type of movie or audio with Desire, it will convert to the format that Desire can play. Just like that, no need to configure anything.
It also run quite fast, and it's free!

jpopgt said:
Thanks
I think i may have tried an older version of this.....will give it another go.
What profile are you using?
Cheers.
Click to expand...
Click to collapse
Diamond but changed a little bit, max res is 800x480, veryhigh, x.264 one pass
MacCarron said:
I use AnyDvD Converter Pro, playback is flawless using the following settings:
VIDEO
custom mp4
800x480 (or any other scaled resolution with 800px width that preserves the aspect ratio, unless source was low res to begin with, in which case i'll stick to the source's original res)
x264 video encoding
bitrate 2000kbps (again,provided the original bitrate was higher of course, otherwise,source's value )
25/23.97fps depending on source of course
AUDIO
aac audio encoding
bitrate 320kbps
sampling 48000/44100 depending on source
2 channels
I have converted uber quality 1080p rips ( 20-30Gb worth, 20-25Mbps video bitrate, 1536+kbps 7.1 DTSHD audio) with these settings, and the results are GREAT . I havent tried pushing the video bitrate any higher, but it might playback nicely with higher values as well.
Click to expand...
Click to collapse
1500 is more than enough, I use 1000kbps and video is fantastic
i will try with 1500, but I think that is overkill too
Does AnyDvD Converter Pro supports subtitles?

Thanks for the replies

th3 said:
I've been using Super(c) for years with custom profiles and it works as perfect as anything I've yet heard about or seen. Plenty of such settings can be adjusted in it perfectly.
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- Sent via my HTC Desire -
Click to expand...
Click to collapse
You got some settings you could pass on for Super?....i have never got great results with it.
Cheers.

I have encoded this Lady Gaga clip using the settings mentioned here with Winmenc, Any DVD Converter Pro and MP4forHD
Winmenc i think still has much better picture quality but lip sync is way out, especially if you fast forward or back....
Any DVD looks great to but i think the lip sync is slightly out....
And MP4forHD looks great and plays fine when i set audio delay to 0.3.
Any DVD Converter....
http://rapidshare.com/files/389703402/Any.mp4
MP4forHD....
http://rapidshare.com/files/389712600/MP4ForHD.mp4
winmenc.....
http://rapidshare.com/files/389707134/winmenc.mp4
Maybe someone here could modify this profile for winmenc to get the lip sync sorted....
http://rapidshare.com/files/389723529/_0-HTC_HD2__MP4_H264_800x480_2000kbps_Sharpened__AAC_44Khz_96kbps.ini
All credit goes to the person that made this profile for the HD2.
Cheers.

Sorry for the late reply, here are the megaupload links to a couple of video clips i've encoded using the preset i posted yesterday. Souce was a 1080p BRrip in both cases.
http://www.megaupload.com/?d=V8TPXP3T
http://www.megaupload.com/?d=3V318NMP
The Transformers' souce had a subtitle track and it was embedded in the rip, so that answers the previous question about subs. I have yet to check if subtitles can be disabled, but i guess it can be done (in my case, i am interested in plain english audio tracks, i don't even know what language is that )
edit: for some weird reasons the audio is noticeably out of sync WHEN PLAYED ON A PC...they are perfect on the Desire though. Pretty weird, last time i checked my pc kicks asses so the problem must be resting in the mp4 container..

You got some settings you could pass on for Super?....i have never got great results with it.
Click to expand...
Click to collapse
I'll upload the profile for you when I get back on the PC (by weekend). I change some things around with every vid though, depending on its properties. Too many internal coder settings you can tweak for slight visual/acoustic differences including how much to raise the sound in db and how much of the clip to cut out.
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- Sent via my HTC Desire -

th3 said:
I'll upload the profile for you when I get back on the PC (by weekend). I change some things around with every vid though, depending on its properties. Too many internal coder settings you can tweak for slight visual/acoustic differences including how much to raise the sound in db and how much of the clip to cut out.
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- Sent via my HTC Desire -
Click to expand...
Click to collapse
Ok Thanks

Just to quickly add - I don't tend to use automated profiles although I know it's what most are after (quickest).
What do you think of YouTube HD? Good enough quality for you or, you'd like better?
I had a quick look at your upload vid properties and they have different internal recode settings and different end file sizes. As such, a true cross-comparison is very difficult (all things kept consistent, the stream with the highest bit-rate and file size will have better visuals). The point of transcoding really is to keep the file size as small as possible with video and audio at your accepted levels -- that level differs for everyone depending on a variety if factors. Many YouTube HD vids are for instance only 480-560 Kbps streams. But all things which impact quality were not automatically kept fixed in these transcodes. Your vids were;
1) Any
Duration : 2mn 1s
Overall bit rate : 2,091 Kbps
Video
Format profile : [email protected]
Format settings, ReFrames : 2 frames
Bit rate mode : Variable
Bit rate : 1,865 Kbps
Width : 800 pixels
Height : 480 pixels
Frame rate : 25.000 fps
Bits/(Pixel*Frame) : 0.194
Stream size : 27.1 MiB (89%)
2) MP4
Duration : 2mn 1s
Overall bit rate : 1,994 Kbps
Video
Format profile : [email protected]
Format settings, ReFrames : 1 frame
Bit rate mode : Variable
Bit rate : 1,544 Kbps
Maximum bit rate : 2,932 Kbps
Width : 800 pixels
Height : 448 pixels
Frame rate : 25.000 fps
Bits/(Pixel*Frame) : 0.172
Stream size : 27.0 MiB (93%)
3) Winmec
Duration : 2mn 1s
Overall bit rate : 2,713 Kbps
(missing vital info it would not show here)
Bit rate mode : Variable
Bit rate : 2,579 Kbps
Width : 800 pixels
Height : 480 pixels
Frame rate : 25.000 fps
Bits/(Pixel*Frame) : 0.269
Stream size : 37.4 MiB (95%)
So the Winmec transcode should have much better visuals than the other two here, even just looking at the empirical data, however, how much of that better-ness is perceptible to untrained and trained human eyes? Judging by mass-accepted online "HD" video, usually not much - and on portable phones - even less (perceptible difference threshold decreases with decreasing display size).
I'll upload a few transcodes using different settings... see which you feel is better (on the intended phone).
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- Sent via my HTC Desire -

Thanks for the info.

Another update:
Looks like your A/V sync issues are caused by too high bit-rate video streams being too power demanding on the hardware of the phone and so the CPU can't keep up. While running some test encodes for the post I had promised, upon checking playback on the Desire, I noticed getting the same A/V sync problems which don't exist on the Desktop. Dropping the video bit-rate alleviated that problem completely albeit the visual quality dropped too. I better check the vids in the default player too just to be sure now (I use Act 1 or Meridian video players mainly). So do keep in mind that higher bit-rate video playback requires more hardware power and hence much higher battery usage than lower bit-rate.
At the moment, I'm stuck with the latest update I've just installed for Super(c) not changing internal codec settings no matter what options I choose (same Lady Gaga 1080p video taken from a Blu-ray rip). Very strange. Just working on getting that running before posting some transcodes. Bear with me, please...
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- Sent via my HTC Desire -

sorry if this is irrelevant but how do i hardcode subtitles with mp4hd?

nikosrs4 said:
sorry if this is irrelevant but how do i hardcode subtitles with mp4hd?
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Click to collapse
You just need the srt file with the same name as the movie in a folder and have the srt option selected in the edit settings of MP4forHD.

maybe I forgot the language selection..I'm trying again now, thanks

so um.. videos?

ive tried 3 movies so far. monsters vs aliens, toy story 3, and v for vendetta. all mp4 1080i bluray rips. all i get is choppy and soundless. any suggestions or work arounds?

randytheshiv said:
ive tried 3 movies so far. monsters vs aliens, toy story 3, and v for vendetta. all mp4 1080i bluray rips. all i get is choppy and soundless. any suggestions or work arounds?
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Click to collapse
Same here with 720p and 1080p MKV. tried several. No sound and choppy. I don't even know what formats work. Video playback needs a lot of work.

you think it'll be a quick kinda thing? i used to have an epic and it tore those mkvs apart with pure awesomeness. i think proper video playback should be necessary for a tablet.

I Read Somwhere that this is Tegra 2 Problem. Somthing about having trouble rendering high profile Videos.

HorsexD said:
I Read Somwhere that this is Tegra 2 Problem. Somthing about having trouble rendering high profile Videos.
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Click to collapse
No its software, I was able to play a high quality 720p mkv perfectly on my tablet today; however the audio didn't work. If it can do the video, it can do both. Its a software issue.

Yeah, I was excited for HD Video while on my plane rides almost weekly. Nothing but choppy and no sound. Horrible!!

i like software issues. that means, hopefully, an easy fix is on the way. i see alot of otas in the future.

This is not a software issue. The tegra 2 cannot handle the bandwidth required for h.264 high profile. This is a known limitation.

randytheshiv said:
you think it'll be a quick kinda thing? i used to have an epic and it tore those mkvs apart with pure awesomeness. i think proper video playback should be necessary for a tablet.
Click to expand...
Click to collapse
It is absolutely horrible. I doubt a quick fix but hopefully something will be done. I can say if you do not own a Xoom and high quality playback is important to you, do not buy it until something is done. I refuse to convert everything to something that works. Hell, my Samsung Captivate phone can play these same files flawlessly.

HorsexD said:
I Read Somwhere that this is Tegra 2 Problem. Somthing about having trouble rendering high profile Videos.
Click to expand...
Click to collapse
That's correct. Same chip as the GTAB, the Adam, the VEGA etc. Sounds like the same issue with high profile videos. GTAB owners have been dealing with this for months, sorry to burst your bubble.
This chipset limitation is allegedly the reason why Boxee dropped the Tegra 2, last year. Use the excellent "mediainfo" to check your h.264 videos - if it's listed as high profile, it will choke (especially at 1080p).

I am considering purchasing the xoom my local BB has plenty in stock, i travel a lot and watch a lot of videos while traveling
i currently have an Archos 101 which by the way plays everything i throw at it flawlessly, so maybe i'll wait and see if the video playback gets better after some roms begin to appear

neonflx said:
I am considering purchasing the xoom my local BB has plenty in stock, i travel a lot and watch a lot of videos while traveling
i currently have an Archos 101 which by the way plays everything i throw at it flawlessly, so maybe i'll wait and see if the video playback gets better after some roms begin to appear
Click to expand...
Click to collapse
I left my comment already post #9 in this thread. I think you will be disappointed but that is me. Good luck.

So you guys are saying that all android tablets will not be able to play hd mkv files? WTF. Android has failed in the tablet market then. My single core epic4g plays them flawlessly. The single core iPad plays them flawlessly with xbmc. You are telling me a dual core CPU and an eight core gpu can't handle a 720p video??????
What use are the tablets then if they cannot play hd video? You don't need a dual core processor for browsing the internet and playing YouTube videos.

muyoso said:
So you guys are saying that all android tablets will not be able to play hd mkv files? WTF. Android has failed in the tablet market then. My single core epic4g plays them flawlessly. The single core iPad plays them flawlessly with xbmc. You are telling me a dual core CPU and an eight core gpu can't handle a 720p video??????
What use are the tablets then if they cannot play hd video? You don't need a dual core processor for browsing the internet and playing YouTube videos.
Click to expand...
Click to collapse
Couldn't agree more my friend. I think this will be corrected at some point but it is frustrating out of the box you can't play a decent HD video while I just saw a new Motorola Xoom commerical on CNN showing one playing flawlessly.

Holy crap, just read the anandtech review of the optimus 2x and it's not giving me a lot of confidence in Tegra 2. They specifically talk about how limited the video playback potential is and how h.264 videos have to be in a ridiculously specific format to play. Basically NVIDIA has been lying and has refuses to respond to its lies.
Edit: Basically, unless you specifically encode a video to fit within the parameters Nvidia needs, the video will not play well. There are very constained the limited parameters that the Tegra 2 seems to support, which may explain certain videos working without sound and others not playing at all.
http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Profiles
http://www.anandtech.com/show/4144/...ra-2-review-the-first-dual-core-smartphone/14
Its pretty disheartening to be reading threads where people are making fun of baseline profile back in 2008. WTF Nvidia.
Edit2: Just went through a ton of my media and all of it is High Profile at various levels. Ugh. God I hope I am wrong about all of this.

Can't it be the same problem that Samsung Galaxy Tab have? That it's the audio that is the problem. That its handle video good but have no codec for multichannel sound.
My Galaxy Tab can play 720p perfectly only when the movie have stereo sound. If it have 5.1 it cant play. So the file need to have only stereo sound.
Can some whit a XOOM try some HD movie whit stereo sound and also try some movies whit multichannel sound. And report back how it went.
Sent from my GT-P1000 using Tapatalk

muyoso said:
Holy crap, just read the anandtech review of the optimus 2x and it's not giving me a lot of confidence in Tegra 2. They specifically talk about how limited the video playback potential is and how h.264 videos have to be in a ridiculously specific format to play. Basically NVIDIA has been lying and has refuses to respond to its lies.
Edit: Basically, unless you specifically encode a video to fit within the parameters Nvidia needs, the video will not play well. There are very constained the limited parameters that the Tegra 2 seems to support, which may explain certain videos working without sound and others not playing at all.
http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Profiles
http://www.anandtech.com/show/4144/...ra-2-review-the-first-dual-core-smartphone/14
Its pretty disheartening to be reading threads where people are making fun of baseline profile back in 2008. WTF Nvidia.
Edit2: Just went through a ton of my media and all of it is High Profile at various levels. Ugh. God I hope I am wrong about all of this.
Click to expand...
Click to collapse
You aren't wrong unfortunately.
Here is a good portion of an article talking about it: http://www.anandtech.com/show/4181/...-a9s-coming-to-smartphonestablets-this-year/3

bd85 said:
Can't it be the same problem that Samsung Galaxy Tab have? That it's the audio that is the problem. That its handle video good but have no codec for multichannel sound.
My Galaxy Tab can play 720p perfectly only when the movie have stereo sound. If it have 5.1 it cant play. So the file need to have only stereo sound.
Can some whit a XOOM try some HD movie whit stereo sound and also try some movies whit multichannel sound. And report back how it went.
Sent from my GT-P1000 using Tapatalk
Click to expand...
Click to collapse
Not true, the Galaxy tab plays 720p mkv with 5.1 fine, as long as it is encoded as AC3, which the majority of files are. You probably have files that are DTS encoded. That is the Galaxy tab's only limitation. And even that can be converted (audio track only in about 15 minutes) if necessary to play on the tab. I watch movies and TV shows as 720p mkv every single day on the tab. I am amazed that the XOOM can't do this. I was so close to buying one - looks like I dodged a bullet, can't stand the thought of going back to encoding everything after using a galaxy tab and a captivate, which play everything. Here are the properties of a file which plays fine on the Galaxy tab for comparison. Notice way down in the Audio section - Channel(s) : 6 channels
Format : Matroska
File size : 1.09 GiB
Duration : 42mn 0s
Overall bit rate : 3 727 Kbps
Writing application : x264.exe
Writing library : mkv2rls x264-tv version built on 2011. febr. 17
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 42mn 0s
Bit rate : 3 336 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.151
Stream size : 982 MiB (88%)
Writing library : x264 core 88 r1471 1144615
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=30 / sliced_threads=0 / nr=0 / decimate=1 / mbaff=0 / constrained_intra=0 / bframes=6 / b_pyramid=1 / b_adapt=2 / b_bias=0 / direct=1 / wpredb=1 / wpredp=0 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=3336 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
Language : English
Audio
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Codec ID : A_AC3
Duration : 42mn 0s
Bit rate mode : Constant
Bit rate : 384 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 115 MiB (10%)
Title : English
Language : English
Text
ID : 3
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Title : English
Language : English

I made a post in Xoom official forum:
https://supportforums.motorola.com/thread/45753

Its really, really, REALLY stupid for Motorola to put out a tablet that cant play video, while 1-2 year old tablets and phones do it just fine!
I was going to go down to the US to buy one this weekend but I will not now.

Video - Notion Ink Adam vs Motorola Xoom

Quick Comparison of Notion Ink Adam vs. Motorola Xoom
check out the video!

Great Review comparing the two. Thanks for the effort.

Good review. I'm actually surprised the Adam's PQI doesn't look nearly as bad in comparison as I thought it was. Its a bit odd the Xoom's screen is that much larger..

Great review. thanks!

football0552 said:
Good review. I'm actually surprised the Adam's PQI doesn't look nearly as bad in comparison as I thought it was. Its a bit odd the Xoom's screen is that much larger..
Click to expand...
Click to collapse
I'm not sure about the PixelQi viewing angles, but the LCD viewing angles are terrible compared to the Xoom. The viewing angles on the Xoom are top notch. I noticed that my buddy had his Xoom laying flat on his lap without his hands on the device. Unfortunately, I can't leave the Adam flat on my lap -- if I do, I can't see the screen. I find myself constantly having to hold the Adam in the right position just to get a decent view of the screen.
Additionally, the overall feel of the Xoom was much better than the Adam. The Adam just feels cheaply made to me... the plastic on the back feels like cheap plastic and the overall construction is a bit shoddy to me. The white edges don't have a clean, smooth edge where they meet the black plastic which isn't a big deal... but even the ViewSonic G-Tablet had a cleaner finish. The bigger thing that bothers me is the cheap plastic on the back -- I wish they would have used the rubberish plastic on the back like they did on the battery cover.
The Xoom (and even the G-Tablet) also have nice rounded corners which make the device feel a lot better in the hand. I was surprised to find that the square corners of the Adam bother me while I'm holding it -- it digs into your hand a bit. The overall build of the Xoom is also a lot nicer than the Adam. The Adam has way too much bezel at the top and the bezels are quite large all the way around the device. The Xoom on the other hand has very nice bezels that fit the device very well -- they're an even size all the way around the device and they are slightly smaller than the iPad, but not so small that it becomes hard to hold the device.
That being said, the internal hardware of the Adam seems to be just as good as the Xoom and it includes a full-size HDMI port and multiple USB ports. After using the HDMI port on the Adam though, it left me wanting something more. The videos on YouTube would slow down to the point where they're out of sync with the audio (only when the HDMI was plugged in) and the picture just seemed overall pixelated. I still think it would be really nice for watching videos on the big screen, so I'll need to test out a local video to see if it causes any slowdowns on local video or just YouTube. The USB ports are also really nice... I've never had an actual need for them, but it is convenient to have the ports available in case I ever want to plug in a USB Keyboard / Mouse or thumb drive... Oh, and the cameras -- I was really stoked about the swivel camera on the Adam, but I've found it's kind of cheap feeling... I didn't use the Xoom camera much, but the quality seemed pretty decent for the handful of shots I took (and the Honeycomb camera app is really nice).

Can anyone test and see if the Notion ink can play this file smoothly?
http://dl.dropbox.com/u/9502388/Pla...to.Pole.2006.720p.HDDVD.x264-ESiR (1)-001.mkv
Its a stress test for 720p video. Its the intro to the first episode of planet earth in high profile h.264. The key part is the ending of this video where the birds start flying and the bitrate spikes.
The reason I ask is that people in the Xoom section claim that the reason the Xoom cannot play high profile h.264 is that it hasn't received the proper codecs and optimization like the Notion Ink does. Before I buy a tablet I want to know that it can play at least 720p videos. I want to make sure that the Tegra 2 is capable of at least playing 720P, because my Epic4g Galaxy S phone plays this file flawlessly.
Thanks a lot.

As i said before on the video, great work inspiron

muyoso said:
Can anyone test and see if the Notion ink can play this file smoothly?
http://dl.dropbox.com/u/9502388/Pla...to.Pole.2006.720p.HDDVD.x264-ESiR (1)-001.mkv
Its a stress test for 720p video. Its the intro to the first episode of planet earth in high profile h.264. The key part is the ending of this video where the birds start flying and the bitrate spikes.
Click to expand...
Click to collapse
I tried it on the Utopia Beta (GB) and it didn't work. The out of the box video player wouldn't even play it. RockPlayer and QQPlayer would load the video but it was playing back at a very low, unwatchable framerate.
Maybe someone with a stock Adam can test for you as they have a different VideoPlayer. The Tegra chip is known for having trouble with High Profile h.264 though. I'm tempted to convert it to Main Profile and see how it looks...

joshua.lyon said:
I tried it on the Utopia Beta (GB) and it didn't work. The out of the box video player wouldn't even play it. RockPlayer and QQPlayer would load the video but it was playing back at a very low, unwatchable framerate.
Maybe someone with a stock Adam can test for you as they have a different VideoPlayer. The Tegra chip is known for having trouble with High Profile h.264 though. I'm tempted to convert it to Main Profile and see how it looks...
Click to expand...
Click to collapse
Thank you so much for trying it. I am trying to see exactly what the limitations are for the Tegra 2 and if the Notion Ink can play media better than the Xoom. If it does then its a matter of codec support most likely. I figured if the Notion Ink could play this file, then it could play any 720p which would be good enough for me.

muyoso said:
Thank you so much for trying it. I am trying to see exactly what the limitations are for the Tegra 2 and if the Notion Ink can play media better than the Xoom. If it does then its a matter of codec support most likely. I figured if the Notion Ink could play this file, then it could play any 720p which would be good enough for me.
Click to expand...
Click to collapse
Per my original comment, I've converted the video to Main Profile x264. The download link for my version of the test file is below (note the MP4 extension):
http://dl.dropbox.com/u/17735781/Planet.Earth.EP01.From.Pole.to.Pole.2006.720p.HDDVD.x264-ESiR.mp4
Unfortunately, even this video doesn't play back properly on my Adam with the Utopia Beta Rom... I'm going to a little tinkering as this is something that has interested me as well...
Code:
[18:54:12] job configuration:
[18:54:12] * source
[18:54:12] + Planet.Earth.EP01.From.Pole.to.Pole.2006.720p.HDDVD.x264-ESiR (1)-001.mkv
[18:54:12] + title 1, chapter(s) 1 to 1
[18:54:12] + container: matroska,webm
[18:54:12] + data rate: 448 kbps
[18:54:12] * destination
[18:54:12] + PEMain.mp4
[18:54:12] + container: MPEG-4 (.mp4 and .m4v)
[18:54:12] * video track
[18:54:12] + decoder: h264
[18:54:12] + frame rate: same as source (around 23.976 fps)
[18:54:12] + strict anamorphic
[18:54:12] + storage dimensions: 1280 * 720 -> 1280 * 720, crop 0/0/0/0, mod 0
[18:54:12] + pixel aspect ratio: 1 / 1
[18:54:12] + display dimensions: 1280 * 720
[18:54:12] + encoder: x264
[18:54:12] + options: ref=2:bframes=2:subme=6:mixed-refs=0:weightb=0:8x8dct=0:trellis=0
[18:54:12] + quality: 20.00 (RF)
[18:54:12] * audio track 0
[18:54:12] + decoder: English (AC3) (5.1 ch) (track 1, id 1)
[18:54:12] + bitrate: 448 kbps, samplerate: 48000 Hz
[18:54:12] + mixdown: Dolby Pro Logic II
[18:54:12] + encoder: faac
[18:54:12] + bitrate: 160 kbps, samplerate: 48000 Hz

joshua.lyon said:
Per my original comment, I've converted the video to Main Profile x264. The download link for my version of the test file is below (note the MP4 extension):
http://dl.dropbox.com/u/17735781/Planet.Earth.EP01.From.Pole.to.Pole.2006.720p.HDDVD.x264-ESiR.mp4
Unfortunately, even this video doesn't play back properly on my Adam with the Utopia Beta Rom... I'm going to a little tinkering as this is something that has interested me as well...
Click to expand...
Click to collapse
Hmm. I wonder if it could be an issue with the 6 channel audio. I chose this clip because its the 720p version of what is called the "killa sample", which is a 1080p clip that tests fairly accurately if your current computer setup can handle any 1080p you can throw at it. This video's bitrate spikes to 23,000Kbps during the bird scene for example, which is huge for an 720p video.
I figured that if the Tegra 2 could play this, it could play anything.

muyoso said:
Hmm. I wonder if it could be an issue with the 6 channel audio. I chose this clip because its the 720p version of what is called the "killa sample", which is a 1080p clip that tests fairly accurately if your current computer setup can handle any 1080p you can throw at it. This video's bitrate spikes to 23,000Kbps during the bird scene for example, which is huge for an 720p video.
I figured that if the Tegra 2 could play this, it could play anything.
Click to expand...
Click to collapse
I re-encoded the video using the Apple Universal preset in HandBrakeCLI and the video now plays fine on my tablet. If I use RockPlayer Lite, it even allows me to select the second audio track which should be 6 channel audio (even though XBMC reports it as stereo?).
On the tablet, I don't really see a major difference in quality. I was surprised that on my 1080p 52", there is a difference but it was still actually pretty good quality. The downside is, that each video you have would have to be re-encoded if you wanted to watch them on your tablet.... this is definitely not something I'm interested in doing for all my videos.
I've linked to the Apple Universal sample below:
http://dl.dropbox.com/u/17735781/PlanetEarthiOS.mp4
Code:
[19:42:42] job configuration:
[19:42:42] * source
[19:42:42] + Planet.Earth.EP01.From.Pole.to.Pole.2006.720p.HDDVD.x264-ESiR (1)-001.mkv
[19:42:42] + title 1, chapter(s) 1 to 1
[19:42:42] + container: matroska,webm
[19:42:42] + data rate: 448 kbps
[19:42:42] * destination
[19:42:42] + PlanetEarthiOS.mp4
[19:42:42] + container: MPEG-4 (.mp4 and .m4v)
[19:42:42] * video track
[19:42:42] + decoder: h264
[19:42:42] + frame rate: same as source (around 23.976 fps)
[19:42:42] + loose anamorphic
[19:42:42] + storage dimensions: 1280 * 720 -> 720 * 400, crop 0/0/0/0, mod 0
[19:42:42] + pixel aspect ratio: 80 / 81
[19:42:42] + display dimensions: 711 * 400
[19:42:42] + encoder: x264
[19:42:42] + options: cabac=0:ref=2:me=umh:bframes=0:weightp=0:8x8dct=0:trellis=0:subme=6
[19:42:42] + quality: 20.00 (RF)
[19:42:42] * audio track 0
[19:42:42] + decoder: English (AC3) (5.1 ch) (track 1, id 1)
[19:42:42] + bitrate: 448 kbps, samplerate: 48000 Hz
[19:42:42] + mixdown: Dolby Pro Logic II
[19:42:42] + encoder: faac
[19:42:42] + bitrate: 160 kbps, samplerate: 48000 Hz
[19:42:42] * audio track 1
[19:42:42] + decoder: English (AC3) (5.1 ch) (track 1, id 1)
[19:42:42] + bitrate: 448 kbps, samplerate: 48000 Hz
[19:42:42] + AC3 passthrough

My own tests
I happened to have some original video handy, and a new Adam that showed up on Friday, so I did some testing. The original video was shot on a Panasonic HMC40 camcorder at 24Mb/s 1080/24p. I did a bunch of 2 minute encodings in Sony Vegas, using the Sony AVC CODEC. At 720/24p and 4Mb/s, I had baseline, main, and high profiles all playing perfectly. Going to 6Mb/s, I started to see issues, though on other 6Mb/s videos, no so much. By 8Mb/s, or 1080/24p baseline at 4Mb/s, I saw the same issues.
Not sure about the bitrate issues, I went to another encoder, MainConcept AVC. I encoded 720/24p in VBR, main profile (MC doesn't do high), average 6Mb/s, peak 8Mb/s. This played just dandy, no de-sync or glitches. So there's definitely something that's encoder dependent, which also explains why some of the tests with x264 and others folks have done may yield different results.
The issue is that the video player is taking a bit too long on some frames, for sure. but the real issue is that the player isn't dropping frames to compensate. This is actually true of three players on my system: the default "Gallery" player, the Notion Ink player, and the ES File Manager player, all of which I'm sure access the same OS component for their work. I tried a few other "players" from the Market, but they produce identical results.
Normal PC video players, satellite boxes, DVD and Blu-ray players, they all have the ability to drop frames to keep audio in sync. In the latter two cases, this is to get around errors: bitstream glitches, read problems, etc. But fact is, most people don't notice the occasional dropped frame. So this is the longstanding practice.
I think I'd find many more of these acceptable if the player could drop frames and maintain audio sync. It's actually kind of weird... looks like audio and video are totally different threads or something. On the higher bitrate videos, the audio finishes, the video keeps playing until it catches up ... very 1980, in computer video terms.

Notion Ink Adam vs. Motorola Xoom - HD Video Playback

watch video! playing back 720p videos in avi/dvix and mkv formats
Notion Ink Adam vs. Motorola Xoom - HD Video Playback

Thanks a lot for doing this. To those wondering the Planet earth clip in question is from the first episodes introduction and is usually referred to as the "killa sample" when in 1080p because of the insane bitrate spike when the birds start flying. The idea is, if your device can play this it can play anything. The sample I sent to inspiron41 was in 720p.
Here are the details of the Planet earth clip:
Code:
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 9 frames
Muxing mode : Header stripping
Codec ID : V_MPEG4/ISO/AVC
Duration : 1mn 52s
Bit rate : 6 478 Kbps
Nominal bit rate : 5 660 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.293
Stream size : 87.1 MiB (92%)
Title : Planet Earth - EP01 - From Pole to Pole
Writing library : x264 core 54 svn-635M
Encoding settings : cabac=1 / ref=6 / deblock=1:-1:-1 / analyse=0x3:0x133 / me=umh / subme=7 / brdo=1 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=2 / deadzone=21,11 / chroma_qp_offset=0 / threads=2 / nr=0 / decimate=0 / mbaff=0 / bframes=4 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=1 / wpredb=1 / bime=1 / keyint=250 / keyint_min=25 / scenecut=40(pre) / rc=2pass / bitrate=5660 / ratetol=1.0 / rceq='blurCplx^(1-qComp)' / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:0.5:18.0
Language : English
Audio
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Muxing mode : Header stripping
Codec ID : A_AC3
Duration : 1mn 52s
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 6.03 MiB (6%)
Title : AC3 5.1
Language : English
As you can see, VERY high quality for a 720p clip. The bitrate actually spikes from around 4000Kb/s to a high of around 22000Kb/s during the bird scene.

It don't look good.

Thank you both for doing this, it goes a long way to assuage my fears of buying the Xoom and it not being able to handle anything I can throw at it.
Do you think at any point in the future the need to convert will go?
I'm hoping for a VLC for Xoom is released shortly.
I have little patience with converting media.

I just finished playing 2 hours of HD 720p MKV video files on my xoom on QQ player and it worked flawlessly!
Anime on the go just got better!
When I get home I try the HDMI out.

synplex said:
I just finished playing 2 hours of HD 720p MKV video files on my xoom on QQ player and it worked flawlessly!
Anime on the go just got better!
When I get home I try the HDMI out.
Click to expand...
Click to collapse
Can you post the details of the video? Download this:
http://mediainfo.sourceforge.net/en
and open it and then drag the mkv file into the window. Then select View>Text and copy the Video and Audio sections.

i'm guessing that QQplayer isnt even optimized for Tegra II chips. would love to see what it could do if it was optimized

Ins and outs of video on the Xoom
@muyoso
The so-call "killa sampla" clip is commonly known as a BADLY encoded clip because the bitrate being used was outrageous. Yes, the "flock flying" sequence takes more bits and will cause a spike, but it's not a particularly demanding scene. There are scenes in the Planet Earth series that have much higher bit spikes. Note that the bitrate for the clip (6.4Mb/s) is only slightly higher than the avg bitrate assigned to the whole movie (5.6Mb/s).
Your 720p clip is badly coded as well. For one, there is no need to use L5.1 for the 720p res, especially when the targetted playback platform is a mobile device. For 720p, you should've used L3.1, and keep the x264 default of ref=3 rather than jacking it to ref=6 (or 9, if the level param takes precedence). For more info about x264's level parameter,
en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Levels
What was proven in your clip is that the Xoom (and Adam) can't play badly encoded MKVs, or MKV videos that were intended for the PC platform, which isn't surprising. Personally, I think it's a bit naive and unrealistic to expect PC-level video-decoding performance from this generation of tablets. Given that this is a tech forum, my suggestion for all concerned is to TECH UP and find a good conversion routine for your downloaded vids. Either that, or wait until next year for the quad-cores to show up.
I've written a Windows script package to optimize video for mobile devices, which can handle most common formats (excluding WMV). It uses x264 for the encoding and is very fast. It can also recode multichannel audio (AC3/FLAC/DTS/PCM) to either stereo MP3 or AAC, and takes only minutes to do. It's noob friendly; drag the video(s) on top of the script and drop it, and that's it.
Right now, it uses the MKV container. I'm hoping that CorePlayer for Android will show up soon, which'll provide MKV support & NEON-accel for H.264. If that doesn't happen, I'll rewrite the script to use MP4 container. MP4 has more constraints than MKV (only AAC audio, no bitmap subtitles), and I prefer to stick to MKV.
Drop your PE clip onto the script and let it recode. My bet is that this will fare much better on the mentioned tablets.
The script package is posted here,
forum.archosfans.com/viewtopic.php?f=63&t=38604

So, wait, the Notion Ink Adam cannot play high profile 720p video?
We need a definitive answer here.
Some people are saying that the Adam couldn't play high profile 720p video but it could after a software update.
That planet earth sample is terrible for actually testing video playback. It was encoded using unrealistic settings. 9 reference frames? I can't imagine a situation where you would need that many.
We need a sample, encoded in 720p h.264, using 3 reference frames, 3 b-frames, weighted p-frames and adaptive b-frames.

>So, wait, the Notion Ink Adam cannot play high profile 720p video?
Let's find out.
The 720p clips below are from the first 1:52 from Planet Earth 01 From Pole to Pole (same as muyoso's), encoded in one-pass CRF mode using x264cli w/ params: --crf 21 --level 3.1 --tune film --preset medium (using the aforementioned script). Bog standard, nothing weird. Avg bitrate is at 5.4Mb/s.
The first clip uses MKV container. It should play in hardware (accelerated) mode using Rockplayer Universal or similar, or software mode otherwise. The second clip is the same as the first, but remuxed to MP4. It should play w/ default Android player. Let me know if Xoom/Adam owners can play either, and how well.
(Sorry, I can't yet post links. Would appreciate if someone with a higher post count repost the links below.)
Planet Earth MKV clip (76.4MB)
sendspace.com/file/avhrgb
Planet Earth MP4 clip (76.5MB)
sendspace.com/file/uo0rhg
Code:
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Muxing mode : Header stripping
Codec ID : V_MPEG4/ISO/AVC
Duration : 1mn 52s
Bit rate : 5 438 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.246
Stream size : 73.2 MiB (96%)
Writing library : x264 core 114 r1913 5fd3dce
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 /
analyse=0x3:0x113 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 /
me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 /
fast_pskip=1 / chroma_qp_offset=-2 / threads=3 / sliced_threads=0 / nr=0 /
decimate=1 / interlaced=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 /
b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 /
keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 /
rc=crf / mbtree=1 / crf=21.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 /
ip_ratio=1.40 / aq=1:1.00
Language : English
Audio
ID : 2
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Mode : Joint stereo
Mode extension : MS Stereo
Muxing mode : Header stripping
Codec ID : A_MPEG/L3
Codec ID/Hint : MP3
Duration : 51mn 16s
Bit rate mode : Variable
Bit rate : 128 Kbps
Minimum bit rate : 32.0 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 46.9 MiB (61%)
Writing library : LAME3.98r
Encoding settings : -m j -V 5 -q 0 -lowpass 16.5 --vbr-new -b 32

BlazinGTI said:
Thank you both for doing this, it goes a long way to assuage my fears of buying the Xoom and it not being able to handle anything I can throw at it.
Do you think at any point in the future the need to convert will go?
I'm hoping for a VLC for Xoom is released shortly.
I have little patience with converting media.
Click to expand...
Click to collapse
Until the players are optimized for tegra, or a new app comes out
on my atrix (tegra2) a 1080p video plays just fine stock, but using qqplayer or rockplayer it stutters, so we will be saved soon i am sure
the video that i refer too is linked below
full 1080p, 10mbps ! (BASELINE PROFILE)
http://hotfile.com/dl/108279465/e51a41a/goal2.mp4.html

Dr.Preston said:
So, wait, the Notion Ink Adam cannot play high profile 720p video?
We need a definitive answer here.
Some people are saying that the Adam couldn't play high profile 720p video but it could after a software update.
That planet earth sample is terrible for actually testing video playback. It was encoded using unrealistic settings. 9 reference frames? I can't imagine a situation where you would need that many.
We need a sample, encoded in 720p h.264, using 3 reference frames, 3 b-frames, weighted p-frames and adaptive b-frames.
Click to expand...
Click to collapse
maybe you can answer me, im curious
can the xoom play 720p or 1080p high profile (or anything thats not baseline)
I know it cant, but is the reason that the tegra cant handle it, or is it a software issue (that can be resolved with apps/codecs)

SS2006 said:
maybe you can answer me, im curious
can the xoom play 720p or 1080p high profile (or anything thats not baseline)
I know it cant, but is the reason that the tegra cant handle it, or is it a software issue (that can be resolved with apps/codecs)
Click to expand...
Click to collapse
That seems to still be the big question.

Since the tegra can handle b frames cabac is the primary element in main profile that it can not handle. I would be interested to do a comparison of the same clip with cabac off.
Sent from my Xoom using XDA App

My main concern at the moment (in regard of video playback) is:
1. There is already a lot of post about it here and I have not this issue being officially addressed by any of the three companies.
2. By the time issue is resolved new Xoom might be much cheaper.
3. What if issue is not resolved? How much will Xoom loose in value?
4. If any of coming Tegra 2 based tablets will hold additional chip + own player... who (from general public) will want to buy xoom (and for how much).
For me $800 is quite a lot and I have to take under consideration simple depreciation... I will want to get a newer tablet (maybe next year) so issue of getting money back is important.
Yes, I was hoping for PC like performance (especially that this is exactly how Xoom is being presented since few weeks/months)
No, I do not had/have/will have an iPad.
No, I do not have time (nor knowledge) to play with video format - all I want is to go to XYlinks.org page, make my download and watch the same way on tablet as I do now on my desktop or netbook (preferably form NAS drive). And most of the 720p stuff available to download is mkv high profile (for PC).
Video playback is very BIG issue. I have no doubt that all the rest will be sorted with updates as they are issues of software - video... I do not think so.
It is not me who started to compare xoom and honeycomb to PC experience but companies behind this product themselves.

@JanetPanic
Have you tried the clips I posted? Do they not work, and if not, what was the error encountered?
@galtom
You should only be concerned if you've bought a Xoom. And if you've bought one--on release day, at full MSRP--then why the heck do you worry about resale value? You already know that you'll be lucky to get half of what you paid when you resell it.
Lastly, if you don't care about technical aspects of HD videos, or finding a tech solution, why are you posting in this thread? This isn't a rant thread for Xoom owners having buyer's remorse.

galtom said:
My main concern at the moment (in regard of video playback) is:
1. There is already a lot of post about it here and I have not this issue being officially addressed by any of the three companies.
2. By the time issue is resolved new Xoom might be much cheaper.
3. What if issue is not resolved? How much will Xoom loose in value?
4. If any of coming Tegra 2 based tablets will hold additional chip + own player... who (from general public) will want to buy xoom (and for how much).
For me $800 is quite a lot and I have to take under consideration simple depreciation... I will want to get a newer tablet (maybe next year) so issue of getting money back is important.
Yes, I was hoping for PC like performance (especially that this is exactly how Xoom is being presented since few weeks/months)
No, I do not had/have/will have an iPad.
No, I do not have time (nor knowledge) to play with video format - all I want is to go to XYlinks.org page, make my download and watch the same way on tablet as I do now on my desktop or netbook (preferably form NAS drive). And most of the 720p stuff available to download is mkv high profile (for PC).
Video playback is very BIG issue. I have no doubt that all the rest will be sorted with updates as they are issues of software - video... I do not think so.
It is not me who started to compare xoom and honeycomb to PC experience but companies behind this product themselves.
Click to expand...
Click to collapse
Shhhhh. Quiet! Your not supposed to say the emperor has no clothes around here. Makes everyone very irritable. Just take a deep breath and repeat after me:
I like re-encoding all my videos. Its fun!
I like re-encoding all my videos. Its fun!
it gives me a feeling of accomplishment.
I'm happy waiting two hours to watch a movie that took 15 minutes to download.
Its fun.
Yes its lots of fun!
Ok now....breathe out....
Thats it. Thats it. Now, don't you feel better?

@Digital Man
Spoken like a true technophobe. Unlike your binary view of the world, not everybody is a hater or a fanboy. XDA is a technical forum, and one would expect for people to look for tech solutions to tech problems.
Yes, the Xoom is deficient on video playback. My opinion is that it's mostly a software (read: fixable) issue, which will be remedied when better media players come online. One I've mentioned is Coreplayer for Android, which will have comprehensive format support (aside from AC3) and hardware accelerated support for Tegra2. We all know that there is little tab-specific Android software available right now. That will come.
Despite what the official Moto line is, I'm fairly confident the Tegra2 can do 720p high profile, as long as the encode uses default parameters. Some so-called scene rips don't. If you want to watch these, you'll need to re-encode. That's just the way it is, until the quad-cores get to market.
As for 1080p HP videos, there are other constraints that make them impractical for watching on tablets other than chip capability. A typical 1080p rip averages around 10GB, and takes around 30+ minutes to transfer to flash. So unless you like to watch the same video over and over, swapping 1080p vids in and out of int storage sounds pretty unappealing to me. Ditto for the SD slot, assuming once it's working. Over wifi? You've got to be kidding.
The reality is that 720p is the most feasible resolution for tablets, considering their storage constraints, and the constraints of wifi (yes, you can stream 720p as-is over a good wifi connection).

e.mote said:
@muyoso
The so-call "killa sampla" clip is commonly known as a BADLY encoded clip because the bitrate being used was outrageous. Yes, the "flock flying" sequence takes more bits and will cause a spike, but it's not a particularly demanding scene. There are scenes in the Planet Earth series that have much higher bit spikes. Note that the bitrate for the clip (6.4Mb/s) is only slightly higher than the avg bitrate assigned to the whole movie (5.6Mb/s).
Your 720p clip is badly coded as well. For one, there is no need to use L5.1 for the 720p res, especially when the targetted playback platform is a mobile device. For 720p, you should've used L3.1, and keep the x264 default of ref=3 rather than jacking it to ref=6 (or 9, if the level param takes precedence). For more info about x264's level parameter,
en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Levels
What was proven in your clip is that the Xoom (and Adam) can't play badly encoded MKVs, or MKV videos that were intended for the PC platform, which isn't surprising. Personally, I think it's a bit naive and unrealistic to expect PC-level video-decoding performance from this generation of tablets. Given that this is a tech forum, my suggestion for all concerned is to TECH UP and find a good conversion routine for your downloaded vids. Either that, or wait until next year for the quad-cores to show up.
I've written a Windows script package to optimize video for mobile devices, which can handle most common formats (excluding WMV). It uses x264 for the encoding and is very fast. It can also recode multichannel audio (AC3/FLAC/DTS/PCM) to either stereo MP3 or AAC, and takes only minutes to do. It's noob friendly; drag the video(s) on top of the script and drop it, and that's it.
Right now, it uses the MKV container. I'm hoping that CorePlayer for Android will show up soon, which'll provide MKV support & NEON-accel for H.264. If that doesn't happen, I'll rewrite the script to use MP4 container. MP4 has more constraints than MKV (only AAC audio, no bitmap subtitles), and I prefer to stick to MKV.
Drop your PE clip onto the script and let it recode. My bet is that this will fare much better on the mentioned tablets.
The script package is posted here,
forum.archosfans.com/viewtopic.php?f=63&t=38604
Click to expand...
Click to collapse
Correct me if I'm wrong, but Tegra 2 on which these tablets are based doesn't do NEON.

Digital Man said:
[...]
I like re-encoding all my videos. Its fun!
it gives me a feeling of accomplishment.
I'm happy waiting two hours to watch a movie that took 15 minutes to download.
[...]
Click to expand...
Click to collapse
LOL! Exactly my point. Look guys, the only product of Apple Inc I had was second gen of iPod, since my Wife got herself a while back an iPhone and forced me to install iTunes I have promised myself solemnly - never, ever again anything like it.
So, I am all for Xoom (and the likes) so they can succeed, but on the other hand I do not want to same problems and frustration.
This is not a first thread about video issue and I can bet even people who had never heard of XDA but bought Xoom are now puzzled and are probably thinking - what is wrong? It was supposed to play HD video and it is not (Mr Average Joe is not going to even know about all this HD gibberish - 720p. 1080p that is it). It says in the ad it plays 720p. and.... at home it is not.
With every passing day I am worried that issue is BIG since it has not been addressed nor by any "gadget web site" nor by (what is more important) by any of the involved companies... With iPad2 out now I would think it would be fair to say how the things are and what customers are to expect.
Knowing 720p High profile is not coming to Tegra 2 I still would buy it and would not get furious afterwards that I have been mislead (or simply kept in the dark just to make me buy it). With no information I can not make a conscious decision about purchase - and that is all I require.
To summarize:
As much as this forum is AWESOME and I value every single opinion (and I am honestly grateful for it) this one has to be addressed by BIG BOYS as "we" (hi, hi, hi) have only our privet opinions about it with nothing to support them :-(

720P video looks better than 1080P, why ?

Hi
This is my first post on this forum.
I have nexus with stock ROM.
I record 2 video one 720P and one 1080P.
When i saw them in my computer and my plasma TV the 720P looks much better than the 1080P.
Why ????
The video made with the stock camera and also with another app (snap camera).
Please help me
P.s, I can't insert a link in this post to download example movie from dropbox
Sent from my Nexus 4 using xda app-developers app

Please do so as I have a theory you're losing your mind.
Sent from my Nexus 4 using xda app-developers app

Congrats on your first post.
Resolution (megapixel) doesn't equate to absolute quality. Nexus 4 camera isn't the best in the market, I can see why 720p videos might be best of its ability. But it could be software and digital processing also.

Please define better.
Recording at 720 will yield a higher fps recording which will look better than 1080.
Also the 1080p recording will probably have more compression to avoid stupidly large file sizes
More compression = less quality
Sent from my Nexus 4 using xda app-developers app

The 720P is more smooth , in the 1080P there is a lot of pixel.
How can I upload links in here? Only after 10 messages??
Sent from my Nexus 4 using xda app-developers app

assaf23 said:
How can I upload links in here? Only after 10 messages??
Click to expand...
Click to collapse
Leave out the "http://" part
Swyped from my Nexus 4 using Tapatalk 4

There is 720P
db.tt/Xh8Y0YAK
There is the 1080P
db.tt/iElrPa7p
Look at the movies in a big screen, not in your mobile
Sent from my Nexus 4 using xda app-developers app

assaf23 said:
There is 720P
db.tt/Xh8Y0YAK
There is the 1080P
db.tt/iElrPa7p
Look at the movies in a big screen, not in your mobile
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Pixel Count
1280 x 720 = 921600
1920 x 1080 = 2073600
2.25 x more between 720 & 1080
your 1080 video should be at least 225% larger at 81.9MB at the same compression
your 1080 recording only has 22% higher file size at 44.5MB
Video Info Breakdown - useful info will be listed below before the full breakdown
720p
Overall bit rate : 16.9 Mbps
Frame rate : 24.922 fps
Minimum frame rate : 23.759 fps
Maximum frame rate : 26.216 fps
1080p
Overall bit rate : 20.3 Mbps
Frame rate : 30.292 fps
Minimum frame rate : 18.304 fps
Maximum frame rate : 31.813 fps
Summary
As you can see the target framerate was 24.9fps in your 720p video, which it kept to very closely <1.5fps deviation.
Whereas in your 1080p video the target was 30.3fps and in some instances it dropped as low as 18.3 fps (thats a whopping 12fps loss at some points.
there is a fine line between good compression and good picture quality.
from looking at the videos you have provided My best guess is that the nexus 4 cannot handle 1080p recording
it struggles to keep up with the fps & I would also have said that the bitrate should have been much higher than it is on a 720p recording (upon further inspection, most of my HD videos only have a bitrate of about 7.5Mbps), but my guess is that it is trying to record with a higher bitrate in 1080p and it cannot actually record at the speed it wants to resulting in slowdowns in fps while bottlnecking & also worse compression.
RAW DATA BELOW
720p
Code:
General
Complete name : V:\Downloads\720P.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 36.4 MiB
Duration : 18s 90ms
Overall bit rate : 16.9 Mbps
Encoded date : UTC 2013-09-20 17:58:38
Tagged date : UTC 2013-09-20 17:58:38
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 17s 776ms
Bit rate : 16.8 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 24.922 fps
Minimum frame rate : 23.759 fps
Maximum frame rate : 26.216 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.731
Stream size : 35.6 MiB (98%)
Title : VideoHandle
Language : English
Encoded date : UTC 2013-09-20 17:58:38
Tagged date : UTC 2013-09-20 17:58:38
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 18s 90ms
Source duration : 18s 96ms
Bit rate mode : Constant
Bit rate : 192 Kbps
Nominal bit rate : 96.0 Kbps
Channel(s) : 1 channel
Channel positions : Front: C
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 424 KiB (1%)
Source stream size : 424 KiB (1%)
Title : SoundHandle
Language : English
Encoded date : UTC 2013-09-20 17:58:38
Tagged date : UTC 2013-09-20 17:58:38
mdhd_Duration : 18090
1080p
Code:
General
Complete name : V:\Downloads\1080P.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 44.5 MiB
Duration : 18s 346ms
Overall bit rate : 20.3 Mbps
Encoded date : UTC 2013-09-20 17:59:21
Tagged date : UTC 2013-09-20 17:59:21
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 18s 69ms
Source duration : 18s 90ms
Bit rate : 20.3 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 30.292 fps
Minimum frame rate : 18.304 fps
Maximum frame rate : 31.813 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.322
Stream size : 43.6 MiB (98%)
Source stream size : 43.7 MiB (98%)
Title : VideoHandle
Language : English
Encoded date : UTC 2013-09-20 17:59:21
Tagged date : UTC 2013-09-20 17:59:21
mdhd_Duration : 18069
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 18s 346ms
Bit rate mode : Constant
Bit rate : 192 Kbps
Nominal bit rate : 96.0 Kbps
Channel(s) : 1 channel
Channel positions : Front: C
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 430 KiB (1%)
Title : SoundHandle
Language : English
Encoded date : UTC 2013-09-20 17:59:21
Tagged date : UTC 2013-09-20 17:59:21

Thank u for your answer.
Do u think record 1080P in good quality its a problem in all nexus 4 ?
Maybe someone can upload 2 videos(or links) so we can verify If its only problem at my phone or more generic problem in the nexus 4
Sent from my Nexus 4 using xda app-developers app

I took a couple of videos on mine. Though I am running a custom Rom & kernel.
The effects was not as bad as yours but I could definitely tell the 720 looked the better of the two.
Recording at 1080 had little spikes of jumpyness & despite been at a higher resolution, looked slightly blurred compared to the 720
Sent from my Nexus 4 using xda app-developers app

Thanks
I checked movies with another nexus 4 device and also the 720P looks much better.
Sent from my Nexus 4 using xda app-developers app

Is someone know how to improve quality of videos ?
Something that verified
If I will do reset to the device its solve the problem ? I saw in YouTube much better movie with 1080P
Sent from my Nexus 4 using xda app-developers app

assaf23 said:
Is someone know how to improve quality of videos ?
Something that verified
If I will do reset to the device its solve the problem ? I saw in YouTube much better movie with 1080P
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
That's all the device can do I'm afraid. Constantly losing focus, recording focusing sound (at least the mic is quite good lol), dropping frames and stuff, it's just not a good cameraphone (even though day picture quality is pretty nice).

BoneXDA said:
That's all the device can do I'm afraid. Constantly losing focus, recording focusing sound (at least the mic is quite good lol), dropping frames and stuff, it's just not a good cameraphone (even though day picture quality is pretty nice).
Click to expand...
Click to collapse
True! N5 will most likely have a much advanced camera (from g2). It is the only thing that makes me want to jump over to the n5!