Database Develop

Play 720p mkv?

Hey guys,
I was thinking about buying a Nook color but I had one question.
Will the Nook Color be able to play 720p mkv files? With subtitles? I noticed that the archos 70 can play 720p mkv files and It seems to me the cpu is similar in both units.
I am pretty uninformed about this topic so I was hoping if anyone could enlighten me? I did not want false expectations that one day someone will be able to get it to work on the Nook Color.
Btw I know that Nook Color can not play it natively, but since the archos 70 I was wondering if the Nook Color could 2 in the future?
Thanks for your help!

is there an app?
At the moment, I don't believe the nook will play .mkv files without rooting it. I haven't rooted mine yet (waiting to see if 2.2 really does come out next month and what changes it brings, first) so can't say if there is an app that will play them.
I would think that it could, as long as the necessary app is installed and the codecs are available. The hardware seems like it would be perfectly capable of playing a 720p file, no matter the format, it would just be squished down to the correct resolution of 600 (or smaller depending on ratio).

Don't know about 720p, but as long as the video and audio streams are something the NC recognizes it should play an MKV (h.264, mp4 for video, aac or mp3 for audio). Although I had much better luck with just straight up mp4 files.
The built in player only even showed subtitles if they were hardcoded to the video.

i can play 720p mp4 files just fine with no lag what so ever.. Quality is awesome.. Rock Player doesn't like MKVs or AVIs, it will play them just really really slow..

ws6kid said:
i can play 720p mp4 files just fine with no lag what so ever.. Quality is awesome.. Rock Player doesn't like MKVs or AVIs, it will play them just really really slow..
Click to expand...
Click to collapse
Are you using the stock player or Rock Player?

rock player plays mkv's fine on my evo but i cant get it to activate on my nook

mvideo player plays mkv 720p anime with subtitles that i have on my samsung captivate. (although it seems you have to start the video from beginning to end (ie: can't skip around) or the audio will get out of sync)
wondering if you download android market and get mvideo player if mkv 720p subtitles will work on nook color as well.
if so i would be interested in the ereader/tablet

Why? The root takes approximitly 15 to 20 minutes. Is practically completly automated, and improves the device 500%.

ws6kid said:
i can play 720p mp4 files just fine with no lag what so ever.. Quality is awesome.. Rock Player doesn't like MKVs or AVIs, it will play them just really really slow..
Click to expand...
Click to collapse
I loaded up a 800mb standard def AVI and it played fine in rockplayer. Bit of stutter at the start but it smooths right out after about 10 seconds. Just FYI

smithgood9 said:
Nook Color can only play these video formats: 3GP, 3G2, MP4, M4V, and OGG. And supports MPEG-4 Simple Profile up to 854×480, H.263 up to 352×288, and H.264 Baseline profile up to 854×480. So if u want to enjoy video on Nook Color, u should convert video to Nook Color compatible formats. I suggest u a powerful video converter called Foxreal Video Converter, which enables convert all video formats to Nook Color with the optimized video format (MP4, 854×480, H.264 codec, 1500kbps avg bitrate, AAC 48KHz 160Kbps) to give user the best visual enjoyment.
U can try it, hopefully it can help u.
Tim
Click to expand...
Click to collapse
You can download an app from market and then you can watch rmvb on Nook Color. So, your post is not 100% accurate.

There are a couple apps vplayer and rockplayer that can play just about every format on armv7l (our cpu)
More importantly I heard the ffree and awesome VLC player is coming to android VERY soon, that will be the best for the NC for sure

I have tried half a dozen video apps and have been unable to play 720p mkv.

720p youtube vids don't work
I tried downloading 720p and 1080p videos from youtube with tubemate and they wouldn't play. They'd skip and stutter - totally unwatchable.
Also just tried playing a 180meg 720p AVI of the office in VPlayer. The video plays fluidly but the audio is completely out of sync.

wy1d said:
I have tried half a dozen video apps and have been unable to play 720p mkv.
Click to expand...
Click to collapse
Nook color's GPU limitation. Max it can play back is 854×480.
See 3 posts up.
From Nook color spec on nookdevs.com site.
GPU Processor: PowerVR SGX530 - Hardware Scaling: 854x480 scaled to 1024x600
Click to expand...
Click to collapse
I'm afraid 720p and 1080p are out of the question.

What's the point of 720p on a 480p device? Do you just not want to convert your video files?
Sent from my Nook Color.

Vplayer works better than rockplayer. Plays mkv. Ratings are bad because developer said application would always be free than started to charge for it. Paid version is highly rated
Sent from my DROIDX using Tapatalk

Clienterror said:
What's the point of 720p on a 480p device? Do you just not want to convert your video files?
Sent from my Nook Color.
Click to expand...
Click to collapse
Because the nook's screen is 600 pixels so 720 would be the smallest "standard" size that doesn't have to be up-converted.

I play mkv files on my HTC Desire - Rockplayer and others all stuttered and displayed a blocky effect.
Then I installed Vital Player (neon) and they all player wonderfully - even 70p ones! For some reason it struggles with 720p mp4 files but who uses those?

The chip that handles video on the NC wants to play video smaller than 854x480.
Any video larger than that will not go through the hardware accelerator.
I have a thread where I attached a handbrake preset for the NC.
http://forum.xda-developers.com/showthread.php?t=992214
If you use that preset, you have to set the video size yourself (defaults to original size)
Use the original size if it is smaller than 854x480. If it is larger (like 720p would be) then set it to 854 width with "Keep Aspect Ratio" and the video file that handbrake puts out will be nook hardware accelerated.
Also, MoboPlayer is much better than the alternatives as far as the player itself goes.

Juboha said:
Nook color's GPU limitation. Max it can play back is 854×480.
See 3 posts up.
From Nook color spec on nookdevs.com site.
I'm afraid 720p and 1080p are out of the question.
Click to expand...
Click to collapse
I read entire thread but I really want to know why archos 70 or 101 (with same GPU!) manages to play 720p hardware accelerated.

Rockplayer 1.5.x (Tegra 2 optimisations)

Thanks to the people over at Modaco I found out that a new Rock player is out
The latest 1.5.x release adds network streaming (via browser integration) and optimisations for Tegra 2 hardware.
If you have another ver. installed please uninstall it. Go to the market install 1.5.0 when you start it, it will have an update to 1.5.1 and once installed just activate it. (if you have a paid copy) if not it will have ads paid is only $9.99
The new update works great, this thing fly's and has loaded everything I throw at it.
Web streaming is easy I have Tversity setup on my home pc and a link to the IP in my browse I just select what I want to see and the stream starts right away in rockplayer.
I am still testing it, but so far this thing is WIN!

Really? Sweeeet. Ima try out som HD Videos now see how they run!

Just saw it on my Captivate. Trying it now on the Gtab

Let's see it play 720p MKV files natively. I'll be really excited if it can. Will try later.

I just tried a .mov (don't know how it was encoded) it played but like 1 fps and sound dropped out after. 1 minute. I then tried an H.264 .mp4. Same deal. Both were 1080p.
What is the gtab supposed to play 1080p in? Any one know?

The only video I had on my Gtab was a 720p 3211kbps XviD with AC3 audio. I tried playing it using hardware decode and it played beautifully but with no audio
Haven't had time to try anything else yet. Will post results when I get a chance.

So I am pretty disappointed with this update. I still can't play H.264 or mkv MPEG4 files in 1080p. The Tegra 2 is supposed to have an on-chip processor for H.264, but this does not seem to take advantage of it.

Thanks for the headsup on this one.
I downloaded and installed.
When I play my 720p mp4 movies, not sure how they are encoded, it asks me if I want hardware decoding mode or software. Which one should I pick?
Coty

I always try hardware first if it fails then I go software.

OK, so after a bunch of trial and error I got 1080p playing in Rockplayer 1.51 with hardware decoding. The file NEEDS to be an MP4 container encoded with MPEG. I used Handbrake to get it done. Everything else I tried doesn't work one way or another, either FC, no sound or no video. I hope this helps someone.

Using 1.51 with TnT 3.0, hardware acceleration mode resets my Gtablet. Screen blacks out and then reboots, starting at the fireworks streamer spash screen.
Tried multiple times with different files with same result.

yea the tab is unable to play videos encoded in High Profile due to hardware limitations with the Tegra chip. it only works with Baseline and Main profile. from my experience, Main gives a cleaner picture than Baseline does. if its encoded in High, the video will just stutter.
was excited to see that the new Rockplayer was Tegra optimized but it will never play 720p or 1080p vids without being converted to those profiles first. was really hoping i can just drag and drop my downloaded 720p tv shows into the tab and watch it but eh well. i need to figure out how to reencode my files while keeping it as close to 720p quality as possible.

gotwillk said:
yea the tab is unable to play videos encoded in High Profile due to hardware limitations with the Tegra chip. it only works with Baseline and Main profile. from my experience, Main gives a cleaner picture than Baseline does. if its encoded in High, the video will just stutter.
was excited to see that the new Rockplayer was Tegra optimized but it will never play 720p or 1080p vids without being converted to those profiles first. was really hoping i can just drag and drop my downloaded 720p tv shows into the tab and watch it but eh well. i need to figure out how to reencode my files while keeping it as close to 720p quality as possible.
Click to expand...
Click to collapse
I must be unlucky, since 1.51 hardware mode crashes and resets my Gtablet with TnT 3.0 after playing a few seconds.
Why do you want to encode at 720p when the Gtab is not 720p? Seems overkill- if the files are for the Gtablet. I can see if just copying over to play, but if redoing for G, why not custom res to native of device?

rushless said:
I must be unlucky, since 1.51 hardware mode crashes and resets my Gtablet with TnT 3.0 after playing a few seconds.
Why do you want to encode at 720p when the Gtab is not 720p? Seems overkill- if the files are for the Gtablet. I can see if just copying over to play, but if redoing for G, why not custom res to native of device?
Click to expand...
Click to collapse
well not 720p but at least close to it. the reason is that it will cause blockiness otherwise, especially for the scenes that have a lot of movement. i want to keep everything the way it is but using the Main profile instead of High profile, which the original vid is encoded in. i think i've gotten it pretty close as the original file but still noticeable blockiness in high movement scenes. i'm a guy thats a stickler for quality video and audio. don't mind me lol.

gotwillk said:
i need to figure out how to reencode my files while keeping it as close to 720p quality as possible.
Click to expand...
Click to collapse
I convert my TV recordings using a free program called SUPER:
http://www.erightsoft.com/SUPER.html#Dnload
Lots of features, including a drag and drop queue to batch convert multiple files.
It's a little confusing at first, but has a good instruction page, and tool tips.
Right mouse click brings up different menus, depending on what your click.
Double clicking a file in the queue shows information about the source file.
Check the High Quality, and Top Quality boxes, 3600 or higher bitrate.
MP4 container, MPEG-4 codec, and AAA LC audio works on Gtab.
As for screen resolution from 720p source file, there doesn't seem to be much difference above 800 wide on the Gtab, so I set scale size to 800x448 for 16:9 video that fills the screen (slight black bands top & bottom, but scaled correct).
Good compromise between file size, and quality.
If you choose the original scaling, it converts the fastest, but huge file size.
Some programs like "No Ordinary Family" have audio in channel 2, so if there is no audio, change default to channel 2 in the settings before you convert.
Hope this helps.

I might be the odd one out with this program. I have had horrible experiences with compatibility, function, and even replicating the same failures.
I have a series of files all encoded by the same person form a "podcast" type video series. Some of the files will "load" in hardware mode(i say load because often sound doesn't work) and some will not. The catch is all of them load and fail sometimes.
I noticed virtually no change in the tegra "optimization" I am really disappointed frankly. I have no reason to buy the software if it doesn't support what I need and I was really hoping this iteration would provide me with some kind of noticeable improvement. I even had to use titanium to wipe data for rockplayer for it to launch any video at all. It also force closes opening videos that used to play perfectly in the old version.
I guess multimedia and android still don't mix =/

High Profile
I having success with HP video using Mediacoder. Both hardware and software rendering are successful with deinterlacing, 6 B-frames and 1920 by 1080 resolution.. My source is AVCHD content, so I am having some interesting issues with audio though....

[email protected] said:
I having success with HP video using Mediacoder. Both hardware and software rendering are successful with deinterlacing, 6 B-frames and 1920 by 1080 resolution.. My source is AVCHD content, so I am having some interesting issues with audio though....
Click to expand...
Click to collapse
what does deinterlacing and 6 b-frames do exactly?
also can you post the rest of your settings? i've been following someone else's settings on a Droid forum and they don't work that well with the tab.

For what it's worth, VLC for Android is reportedly in the works for early 2011.

Jokulgoblin said:
For what it's worth, VLC for Android is reportedly in the works for early 2011.
Click to expand...
Click to collapse
Great news i look foward to trying it out.

[Q] Best Video Player is?

Been trying to find a good video player...all seem to lag quite a bit or are quite choppy...anyone have any luck with any working really good? If so, please share!

I like rockplayer. Used it for a bit on the plane yesterday.

Is there a certain resolution you encoding videos too or will rock player handle anything?

i have an android phone and I use both rockplayer and mvideoplayer. rockplayer handles avi files well but not mkv files. mvideoplayer handles both.
i don't have a nook color but I would assume if you have a rooted nook(and have access to market) you could get these players and they should work since the processing seems the same.
i'm interested in a rooted nook color but can't seem to find if anyone has actually tried these apps.

rockplayer on the nook can handle 480p non hd videos fine in the mkv or avi containers. anything higher than that and you start to get audio and video seperation because the proc cant keep the video going at the propper pace

oscarfrancois said:
i have an android phone and I use both rockplayer and mvideoplayer. rockplayer handles avi files well but not mkv files. mvideoplayer handles both.
i don't have a nook color but I would assume if you have a rooted nook(and have access to market) you could get these players and they should work since the processing seems the same.
i'm interested in a rooted nook color but can't seem to find if anyone has actually tried these apps.
Click to expand...
Click to collapse
im using mplayer on mine right now and watching some mp4 videos, not an hd file ... but the proper ratio and it looks killer ... totally worth 250 bucks

vplayer
I use Vplayer beta and i strongly recomend it. it plays most videos well and only lags a bit when you get to real high quality videos

i bought a nook color and tried it out...so far video playback is not that great.
mvideo player seems to have a very slight audio lag when i played a standard avi file(not converted or optimized for nook color) and no mkv files work on any of the players.
i think this has something to do with the internal videoplayer itself and not really the actually processing power of the nookcolor.
looks like i will have to just convert files to mp4...an extra step but I read more than watch videos.

If you are using anything other than an mp4 file extension then you're using software decoding. Software decoding will only go as smoothly as the CPU allows. I've found when using software decoding I can handle AVIs up to standard def in Rockplayer. (480) I get a tiny bit of stutter at the start, but it smooths out within 60 seconds.
However, if you use hardware decoding, (only works with mp4 files) you can probably push the resolution up a bit. I have a 720x400 file at a video bitrate of 800 that plays instantly and smoothly in the native player and in Rockplayer. I plan to go home and push the resolution a bit further and see where it starts to desync, so once I do I'll report back.
tl;dr: Anything other than mp4 has to be standard def or lower and played in a 3rd party player that can do software decoding, like Rockplayer. Anything in mp4 can be played in anything that does hardware decoding, and can probably go quite a bit higher than SD.

vplayer install error
urbanengine1 said:
I use Vplayer beta and i strongly recomend it. it plays most videos well and only lags a bit when you get to real high quality videos
Click to expand...
Click to collapse
I encountered an error while installing vplayer beta. didn't you get any?

Video playback

Hi there!
I have gotten to new Lg Optimus 2x now for about a week and I am getting a bit annoyed now. I bought it purely on Being able to play full HD Movies on my Tv. But with countless hours spent on forums and trying with different players, and also differnt types of formats.
What I have on the phone now is QQplayer and arcmedia and ofcourse Lg's player
Formats I have used and there display quality:
.AVI Works in QQ, Arc but not in LG's
.Xvid Works in all
.Mkv (480p) Works in QQ ,Arc but not LG's Also this is where the framerate goes down.... out of sync audio.
.Mkv (720p) Just awfull
I am now converting a 720p movie to mp4 format h.264 to try if that works but it takes ages and I can't be botherd to convert a movie for 4h when I want to watch it on my TV.
So what can be done.. why can it play back some lame teasers on full hd but not a bloody movie in decent quality on 480p...
What should I try to convert movies and episodes to?(prefix)
The phone is not Rooted and I have no experience in that matter
Kind regards!

Kruxa said:
So what can be done.. why can it play back some lame teasers on full hd but not a bloody movie in decent quality on 480p...
!
Click to expand...
Click to collapse
Because a video is not just a video
Video consist of 3 parts
videopart encoded to some specific format (xvid, divx, mpeg-4, h264, mpeg-2) etc
audiopart encoded to some specific format (mp3, ac3, dts) etc.
a container (avi, mp4, mkv) etc. that encapsulates the video and audio part
furthermore the video and audio part are not just encoded in specific formats, but according to specific settings - often called profiles. These define things like bitrate, b-frames, ref.frames, and other technical stuff
The chipset only support hardware acceleration (which is needed to play video in high resolution) for certain types of formats, and only when encoded after certain specifications, and only when encapsulated in certain containers, and finally only when being played by the LG player.
Other players cannot utilize the hardware acceleration but rely on software filters like ffmpeg, these give you the possibility to play formats that are not supported by the chip itself or by LG's player by using these software filters. But this also means there are no hardware acceleration to help the playback and therefore you can only play these in standard resolution and/or you can get synch issues between video/audio.
the main format supported by the chip and the LG player is called mpeg-4/h264 - and its only supported inside an mp4 container - mkv are not supported.
The encoding of the video part mpeg-4/h264 are only supported up to a certain profile level - meaning it only support upto a certain bitrate, a certain number of ref.frames, of b-frames etc. It also only support certain audio formats, mainly aac. It wont play your downloaded 720p/1080p mkv with ac3 or dts audio, and a videotrack using h264 profile level H4.1 or more with lots of ref.frames
In short you cannot just throw any downloaded or home cooked video to the mobile and expect it play - it wont. Secondly if you bought it to be a generic HD mediaplayer for these types of videofiles, then you bought it for the wrong reasons. It is not a generic HD mediaplayer, its a mobile phone, with the ability to record and play up to fullHD video - if these comply to the specifications which are supported. This videoability are mainly targeted at recording video of reasonable quality (for a mobile phone) and playing web2 content like youtube HD video which complies to these standards.
Nothing more - it wasnt designed to be your HD mediaplayer replacement
So what to do ?
make sure youre videos are encoded as h264 using max profile level 3.1 and max 10mbps bitrate - using an AAC audiotrack and encapsulated in an .mp4 container. Then they will play in HD resolution.
Now all you need is reading a couple of hundreds websites and guides on how to check your files for these specifications (mediainfo), remux video from an mkv container to an mp4 container if the video and audio inside are allready compliant, or how to reencode to desired specifications if they are not compliant.

Very usefull mini guide into the jungle of video/audio, codec, splitters and containers.
Knowing this makes it easy to setup DVDFab and other rippers/converters (hopefully).
Thanks

I tested some h264 formats on the LG2x. Baseline profile works fine for 1080p video, I tried that up to 10mbit/s. Main profile works, but is too slow on 1080p and I think 720p also. It might work with SD resolutions, but I didn't test this. High profile simply isn't even recognized by the LG media player. I did try all profile levels, it ate all of them. Perhaps someone else can figure out the maximum bitrate the device will play smoothly, and what the "maximum" resolution for the main profile is (and at what bitrate).
So if you're putting h264 HD material on there, put it in an mp4 container with AAC audio, and use the baseline profile. 10mbit/s worked fine for the 1080p source I tested with (Looney Tunes Short Fur of Flying).

spawndk said:
In short you cannot just throw any downloaded or home cooked video to the mobile and expect it play - it wont.
Click to expand...
Click to collapse
Hrms, can an app do this? Like for instance, on a desktop/laptop, Window's default player is not the greatest- however, here comes VLC player & it damn plays anything. My point is, can there be a App out there in our future that does this too for Android?

fen_nyc said:
Hrms, can an app do this? Like for instance, on a desktop/laptop, Window's default player is not the greatest- however, here comes VLC player & it damn plays anything. My point is, can there be a App out there in our future that does this too for Android?
Click to expand...
Click to collapse
An app on Android can not use the hardware acceleration! On a computer however, a program (like vlc) is able to use your full power!

Hi all
Read this guide "How to make videos to Optimus 2x using Handbrake"
http://www.knowyourcell.com/lg/lg-optimus-2x/optimus-2x-guides/697986/how_to_convert_videos_and_transfer_them_to_the_lg_optimus_2x.html

Hi.. THX that is great help.. Very interesting.... .
Do you think that we can expect some 3rd party video player using hardware acceleration of Tegra 2 in Market soon.? Playing .mkv and other HD formats.? Or it is not possible.?

I do not know, but if Tegra 2 will be used in other phones than Optimus 2x ... drivers might be upgraded to support more video types.

Walvater said:
An app on Android can not use the hardware acceleration! On a computer however, a program (like vlc) is able to use your full power!
Click to expand...
Click to collapse
RAWrrrRRR!! WHY?? Okay, I kinda get it thanks...

Its a fact that HW acceleration can only be used when/if Nvidia Tegra 2 drivers supports it.
But any app can play any format if it have the right SW decoder (using CPU).
Optimus 2x should be fast enough to play quality video (DVD resolution 720×576) using sole SW decoders
Isn´t Full HD on a mobilephone a total overkill and kind of waste?
If I want to se a movie on my Full HD Flatscreen I use my Media Center or BluRay player

im not sure what you guys looking for but all movies i downloded from internet just fly

gintas111 said:
im not sure what you guys looking for but all movies i downloded from internet just fly
Click to expand...
Click to collapse
What kind of movies
YouTube videos ?

Hi Mittaa,
how does it work with big files..? You can only put files up to 4 Gb on the SD card can't you..? So there is not enough room for 1080p movies..???

element332 said:
Hi Mittaa,
how does it work with big files..? You can only put files up to 4 Gb on the SD card can't you..? So there is not enough room for 1080p movies..???
Click to expand...
Click to collapse
As I said ... "Isn´t Full HD on a mobilephone a total overkill and kind of waste?"
FAT32 SD card can't handle files > 2GB
Maby you could split files and maby Android supports filessystems other than FAT16 and FAT32 ... I don't know

I think it is not a overkill. I don't have any way of getting HD content on my TV (BlueRay, Playstation, etc) so i can sure use this.
Or when I travel I can just plug my phone to the TV in the hotel room and watch the movie.

Overkill? Whats wrong with that?
Sent from my LG-P990 using XDA Premium App

HerrKuk said:
Overkill? Whats wrong with that?
Click to expand...
Click to collapse
I agree. This phone has the specs to run it, & space is up to the owner to use. I remember a headline from Engadget stating that the "the 2X has a crazy amount of codecs for video media" when it's released in S. Korea. .mkv is probably the most popular container for HD videos- disappointing the 2X does not support this...

HerrKuk said:
Overkill? Whats wrong with that?
Click to expand...
Click to collapse
How is it possible to play 1080X1920 on a 480x800 screen?
It might be possible to use 1080X1920 when using HDMI mirror, but then how much space do you have on your phone? And do you want to split files > 2GB?
OK ... if you use hard compression file size drops ... but then quality also drops to something that you can compare with DVD resolution!
What I ment was that I personally prefare a lower resolution in a good quality
DVD resolution 720×576 ajusted to my phone (MPEG4) take up about 1-2GB and I use to have around 6-8 good movies on my 16GB SD card.
I too hope that more formats will be supported ... at the moment its just not good enough ...

optimus 2x supports baseline profile 4.1
basically it means that most of the 720p media files you'll find in the internet won't play smoothly because they are encoded according to high profile or even have been encoded after specifically more quality wise settings
if you need to encode for 2x you basically need software such as handbrake, set on the iphone and ipod touch profile on the right and change the resolution to your preference up to 1920 width and then set the bitrate so that the maximum won't go over 20Mbit
basically avg 15 would be fine though because of the fat32 limitations 4 gigabytes, it would be wise to calculate the bitrate according to the maximum file size
i do not know if Android supports ExtFat, which supports much higher filesizes, but because of the baseline profile limitations it doesn't really make any real difference between 1080p 15kbit/s or 5kbit/s video stream nor does those additional settings in Handbrake software
there is no "almost lossless" settings for optimus 2x, only thing matters is the speed for reencoding the bloody internet

[Q] Divx playback (neverending story...)

Hi!
I have been struggling with this topic for a few days now. Read most of the threads written here on this too. I know about the limitation of hardware accelleration, and understand it. I have created presets for Mediacoder (+CUDA) perfectly working so that I can quickly convert what I want to a video format being very well played by on nook with hw accelleration.
I am aware of the fact that videos encoded with xvid/divx can only be played with software decoders. It's been reported here such videos are pretty well handled by players like Rock-,Mobo-,YXplayer and so on; I assume nook's CPU has enough power not to have issues with ~620x350 XVid encoded video. Well, mine seems to have one.
I tried out a couple of different .avi's I have. Just one specific example:
an episode of some TV show:
Video: 310 MB, 1037 Kbps, 25.0 fps, 624*352 (16:9), XVID = XVID Mpeg-4
Audio: 38 MB, 130 Kbps, 48000 Hz, 2 channels, 0x55 = MPEG Layer-3
This one is being played fine even on my old PPC Axim 30 (Intel XScale PXA270 at 624MHzwith TCPMP), but with no means on the nook. Test results:
- RockPlayer -> slide show
- YXPlayer -> slide show
- YXPlayer Neon -> slide show
- MoboPlayer - almost the one. The only one which plays completely flawless video, but the sound is out of sync, about 1 sec behind the video
What am I missing/doing wrong? Such a file should be a walk in the park for a Cortex A8 at 800MHz, shoudlnt' it? Is it about me using a rooted stock nook? Would froyo did the trick?
Regards,
Maciej

So you're on stock? Have you overclocked your setup? If so do you have governor set to Interactive and the Min. Cpu set to atleast 800mhz?

Matchay said:
25.0 fps
Click to expand...
Click to collapse
Found your problem. I find that the nook can only do 24fps or 29.999999fps. You must be trying to play a European program. Re-encode in Handbrake and change the "Framerate" drop down box to the NTSC Video setting.
While you are at it, in Handbrake and all, you might as well re-encode using x264 to take advantage of the Nook's hardware decoding...

poofyhairguy said:
Found your problem. I find that the nook can only do 24fps or 29.999999fps.
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Generally? Or in terms of software divx/xvid playback? I re-encoded the file to H.264 WITHOUT changing the framerate and it works smoothly. For the hardware accel the framerate is not an issue.
I wonder what the problem could be: the sound isn't stuttering, the video is smooth, they are simply not synchronized. It cant be due to lack of power,can it?
Regards,
Maciej

The NC supports hardware decoding of MPEG4 (i.e. Divx/Xvid) Simple Profile but it has to be in a MP4 rather than AVI container. Unfortunately MP3 audio is incompatible with MP4 containers so the typical AVI needs to have at least the audio re-encoded for hardware playback on the NC.
It's not unusual to have poorly muxed AVI files where the audio and video end up out of sync when re-encoded. I'm not sure about Mediacoder but Handbrake does not easily allow adjusting the audio offset to compensate for that. You might try aviDemux (open source) as it does allow adjustment of audio offset. Unfortunately, it's trial and error to figure out the proper offset. If your Divx file is MPEG4 SP then you could just set up aviDemux to copy the video, re-encode the audio to AAC and mux in an MP4 container with the appropriate audio offset.

Matchay said:
Generally? Or in terms of software divx/xvid playback?
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For me just software divx playback. My 25 fps files just never play well.
For x264 you can do any framerate up to 39 fps I think, as long as the bitrate is low enough. For me in Handbrake the magic number is a Constant quality of 22

@razmajazz
Sorry for the confusion. I have no issues with any x264 re-encoded file, as mentioned in my first post - my Mediacoder preset does its job perfectly.
I mean MoboPlayer plays the original Xvid video and audio very smoothly, they are simply out of sync, which doesn't look like a CPU power issue to me. As poofyhairguy said, it must be about the framerate and some incompability.
Re-encoding doesn't bother me, I only wanted to avoid it if possible for lower quality divx/xvid films. And the MoboPlayer seemed to be only an inch far away from the right solution.
I will do some testing in the afternoon.
Thanks,
Maciej

Are You playing videos on stock, rooted Nooks?
Or Froyo/CM7?

rooted stock

Try summer player, I tried many movies with that player and all seem to work well
Sent from my HTC Glacier using XDA App

angel7000 said:
Try summer player
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Interestingly, Summer player plays all my files in fast forward mode

DSP drivers/Hardware video decoding is critical for smooth playback.
I dont know why the CPU cannot do it fast enough. (software decoding)
Thats why I'm on nookie froyo
No sync issues or anything with normal res videos from the interweb, no recoding needed, any decent MPEG4 player plays smooth.

Matchay said:
@razmajazz
Sorry for the confusion. I have no issues with any x264 re-encoded file, as mentioned in my first post - my Mediacoder preset does its job perfectly.
I mean MoboPlayer plays the original Xvid video and audio very smoothly, they are simply out of sync, which doesn't look like a CPU power issue to me.
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Indeed I was confused. I thought both the original and re-encoded files had audio sync issues. As long as the video stream is MPEG4 SP, you may still just want to copy the video, re-encode the audio to AAC and mux in a MP4 container. It's pretty fast since you only have to convert the audio, you don't lose quality from re-encoding video and it plays back with hardware decoding on the NC.

Success!
Yesterday I ran nookie froyo from SD. MoboPlayer plays all files perfectly, no out of sync! It was that simple...
Thank you all for your suggestions!
Cheers,
Maciej