How to split a mkv(AVC+AAC) file to pure video and audio files by using gst-launch?
Ashwini Sharma
ak.ashwini at gmail.com
Thu Nov 24 21:08:19 PST 2011
Hi,
You should decode the video/audio and then re-encode them to separate files.
the pipe may look like
gstlaunch filesrc ! demux ! video_decoder ! queue ! encode ! mux ! filesink
-Ashwini
On Thu, Nov 24, 2011 at 6:23 PM, Raymond18 <yhung124 at gmail.com> wrote:
> Hi all,
>
> Can anyone help me to know how to split a mkv(AVC+AAC) file to pure video
> and audio files by using gst-launch-0.10?
>
> The information of the mkv file is as following,
>
> ----------------------------------------------
> General
> Unique ID :
> 194281003365095078203371305786156002599
> (0x92292902E8CC2D8396BA1C4306EC2D27)
> Complete name : test.mkv
> Format : Matroska
> Format version : Version 2
> File size : 432 MiB
> Duration : 26mn 59s
> Overall bit rate : 2 237 Kbps
> Encoded date : UTC 2011-11-04 19:32:20
> Writing application : mkvmerge v5.0.1 ('Es ist
> Sommer')
> built on Oct 9 2011 11:55:43
> Writing library : libebml v1.2.2 + libmatroska
> v1.3.0
>
> Video
> ID : 1
> Format : AVC
> Format/Info : Advanced Video Codec
> Format profile : High at L3.1
> Format settings, CABAC : Yes
> Format settings, ReFrames : 1 frame
> Format settings, GOP : M=1, N=30
> Codec ID : V_MPEG4/ISO/AVC
> Duration : 26mn 59s
> Width : 1 280 pixels
> Height : 720 pixels
> Display aspect ratio : 16:9
> Frame rate mode : Variable
> Frame rate : 30.303 fps
> Color space : YUV
> Chroma subsampling : 4:2:0
> Bit depth : 8 bits
> Scan type : Progressive
> Language : Japanese
> Default : Yes
> Forced : No
>
> Audio
> ID : 2
> Format : AAC
> Format/Info : Advanced Audio Codec
> Format profile : LC
> Codec ID : A_AAC
> Duration : 26mn 59s
> Channel(s) : 2 channels
> Channel positions : Front: L R
> Sampling rate : 44.1 KHz
> Compression mode : Lossy
> Language : Japanese
> Default : Yes
> Forced : No
>
> ----------------------------------------------
>
> And I want to split it to pure video and audio file by using gst-launch as
> following, (I made it by a GUI tool in Windows )
>
> ----------------------------------------------
> Complete name : /home/test_track1_jpn.h264
> Format : AVC
> Format/Info : Advanced Video Codec
> File size : 402 MiB
>
> Video
> Format : AVC
> Format/Info : Advanced Video Codec
> Format profile : High at L3.1
> Format settings, CABAC : Yes
> Format settings, ReFrames : 1 frame
> Format settings, GOP : M=1, N=30
> Width : 1 280 pixels
> Height : 720 pixels
> Display aspect ratio : 16:9
> Frame rate mode : Variable
> Color space : YUV
> Chroma subsampling : 4:2:0
> Bit depth : 8 bits
> Scan type : Progressive
>
> ----------------------------------------------
>
> and
>
> ----------------------------------------------
> General
> Complete name : from_matro.aac
> Format : ADTS
> Format/Info : Audio Data Transport Stream
> File size : 29.8 MiB
> Overall bit rate mode : Variable
>
> Audio
> Format : AAC
> Format/Info : Advanced Audio Codec
> Format version : Version 4
> Format profile : LC
> Bit rate mode : Variable
> Channel(s) : 2 channels
> Channel positions : Front: L R
> Sampling rate : 44.1 KHz
> Compression mode : Lossy
> Stream size : 29.8 MiB (100%)
>
> ----------------------------------------------
>
>
> I try to use following comands, but they are useless, can somebody tell me
> the right pipeline I should use?
>
> # gst-launch-0.10 filesrc location=/home/test.mkv ! matroskademux name=d
> d.video_00 ! filesink location=from_matro.h264
> # gst-launch-0.10 filesrc location=/home/test.mkv ! matroskademux name=d
> d.audio_00 ! filesink location=from_matro.aac
>
>
>
>
> --
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