How to split a mkv(AVC+AAC) file to pure video and audio files by using gst-launch?

[Raymond18]

Thanks for your response,

However, is there any other way to achieve this without decoding and
encoding file again?

I find a command tool called "mkvextract" in mkvtoolnix-4.5.0-1.fc15.i686
package can do it without re-encoding file.

-----------------------------
$ mkvextract tracks ./test.mkv 1:extrace_file.h264
Extracting track 1 with the CodecID 'V_MPEG4/ISO/AVC' to the file
'extrace_file.h264'. Container format: AVC/h.264 elementary stream
Progress: 100%
-----------------------------

How does gst-launch to do the same thing?

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