- Do you have an exhaustive list of available output formats? (it's remarkably hard to find docs for this tool) The .m2ts extension is likely to be recognized.. I'm wondering if a simple rename could do the trick (.mpeg4 or .m4v perhaps).04-24-11 02:21 AMLike 0
- googled a bit and came across:
mkv to m4v/mp4
towards the end someone mentions using mkvextract to demux the audio and video streams, and then using mp4box to remux them into an mp4 stream.
A quick check shows that these are simply demux/mux tools, so there should be no decode/re-encode steps required (ie. quick and with no quality hit).
I'll give this a quick try momentarily.
also: videohelp.com is a great resource for guides and howtos on media transcoding, etc.04-24-11 02:33 AMLike 0 - I was able to use mkvextract and ffmpeg to demux and remux an x264/AAC .mkv movie to .mp4.
There is no decode/encode step, so the quality is identical to the original mkv file, and conversion only took about a minute (1GB file).
This file plays on the playbook fine.
These are Linux command line tools, but equivalents exist for Windows and OS X.
Maybe in the morning I will throw a howto together for the various platforms.04-24-11 03:37 AMLike 0 - I was able to use mkvextract and ffmpeg to demux and remux an x264/AAC .mkv movie to .mp4.
There is no decode/encode step, so the quality is identical to the original mkv file, and conversion only took about a minute (1GB file).
This file plays on the playbook fine.
These are Linux command line tools, but equivalents exist for Windows and OS X.
Maybe in the morning I will throw a howto together for the various platforms.04-24-11 07:33 AMLike 0 - Bla1zeCB OGHeh.. VLC for QNX already exists.. We really do just have to wait for RIM. The QNX version of VLC needs the NDK to compile against...and we don't have the NDK. So technically, the capabilities are already there.... The ball really is in RIM's court here and right now, they're holding.bluemax413 likes this.04-24-11 09:45 PMLike 1
- I was able to use mkvextract and ffmpeg to demux and remux an x264/AAC .mkv movie to .mp4.
There is no decode/encode step, so the quality is identical to the original mkv file, and conversion only took about a minute (1GB file).
This file plays on the playbook fine.
These are Linux command line tools, but equivalents exist for Windows and OS X.
Maybe in the morning I will throw a howto together for the various platforms.
Thanks.04-25-11 07:17 AMLike 0 - Alright, so I have an MKV with x264 video and AAC audio. I used MKVEXTRACT to separate the video and audio streams. I then re-muxed using ffmpeg to an mp4 container. When I do this, audio and video play fine on the computer, but on the Playbook, I get no audio. Did you run into this at all?
Thanks.04-25-11 10:02 AMLike 0 - 04-25-11 10:59 AMLike 0
-
- Alright, so I have an MKV with x264 video and AAC audio. I used MKVEXTRACT to separate the video and audio streams. I then re-muxed using ffmpeg to an mp4 container. When I do this, audio and video play fine on the computer, but on the Playbook, I get no audio. Did you run into this at all?
Thanks.
It was a 720p h264 video stream:
Stream #0.0: Video: h264, yuv420p, 1280x720, 23.98 fps, 23.98 tbr, 1200k tbn, 47.95 tbc
Your audio problem is likely due to the AAC track being 5.1-channel, or an unsupported bitrate, etc. I ran into the same problem remuxing another mkv. Problem could be that it is an ADTS AAC 5.1 stream:
Extracting track 1 with the CodecID 'V_MPEG4/ISO/AVC' to the file 'output.x264'. Container format: AVC/h.264 elementary stream
Extracting track 2 with the CodecID 'A_AAC' to the file 'output.aac'. Container format: raw AAC file with ADTS headers
You could try downsampling the AAC file before remuxing with ffmpeg.mahen915 likes this.04-25-11 09:15 PMLike 1 - FYI, I just re-muxed a high-def mkv and it played okay.
It was a 720p h264 video stream:
Stream #0.0: Video: h264, yuv420p, 1280x720, 23.98 fps, 23.98 tbr, 1200k tbn, 47.95 tbc
Your audio problem is likely due to the AAC track being 5.1-channel, or an unsupported bitrate, etc. I ran into the same problem remuxing another mkv. Problem could be that it is an ADTS AAC 5.1 stream:
Extracting track 1 with the CodecID 'V_MPEG4/ISO/AVC' to the file 'output.x264'. Container format: AVC/h.264 elementary stream
Extracting track 2 with the CodecID 'A_AAC' to the file 'output.aac'. Container format: raw AAC file with ADTS headers
You could try downsampling the AAC file before remuxing with ffmpeg.04-25-11 09:17 PMLike 0 - If anyone using a Mac was wondering how to really easily remux HD .mkvs for the playbook (1080p or 720p), theres a program called MKVTools that does it for you. It creates playbook friendly .m4vs in just a few minutes.
Download MKVtools
It has a nice feature that allows you to retain the surround sound (5.1 DD or DTS for example), but also add an AAC stereo audio track that the Playbook recognises. This means you can keep the surround sound in the file for watching the movie on your home theater, but also enjoy it on the playbook, without the need for two files...
Hope that helps!04-27-11 05:22 AMLike 0 - The built in smb server on the Playbook. For once I'm glad RIM did something that didn't rely on Mac and Windows only. I have not had to once plug my Playbook into the computer directly to do anything. Everything is just so easy04-27-11 05:59 AMLike 0
-
mkvextract tracks source.mkv 1: output.vid 2: output.aud (remove the spaces after the colons.. I was getting emoticons)
ffmpeg -i output.vid -i output.aud -vcodec copy -acodec copy output.mp4
However as noted elsewhere, there have been problems with AAC/ADTS audio tracks. A downmix step may be needed.
I tried getting ffmpeg to downmix, but ran into some speedbumps and moved on to other things. sox or mencoder or faad may help.
(also, just realized that this is the same thread we discussed this in several days ago :P )Last edited by JustAnotherBeerbot; 04-27-11 at 09:01 AM. Reason: additional note..
04-27-11 08:57 AMLike 0 -
- HERE IS WHAT I DID --
Used 'Files and Folders' to rename the mkv to .f4V (I am using an flv player too) and then opened the .mkv file using the 'Files and Folder' app itself Try it out . NO NEED TO CONVERT.
Here are the codec details -
video - H264-MPEG 4 AAC
audio - MPEG AAC06-03-12 11:26 AMLike 0
- Forum
- BlackBerry PlayBook Forums
- BlackBerry PlayBook
Will The Playbook be able to play mkv files??
« playbook camera focusing sucks
|
what does mean ,when you turn on your playbook and just get the playbook logo? »
LINK TO POST COPIED TO CLIPBOARD