Dear Gstreamer Developers,
I am trying to generate mp4 files with the current CVS
version of
gstreamer, however, I have run into a problem with including
audio in
the MP4 file. Making the gstreamer chain as simple as
possible, here is
the easiest way to reproduce the problem:
gst-launch -v audiotestsrc samplesperbuffer=22050
num_buffers=4 !
audio/x-raw-int,rate=22050,channels=1 !
queue !
faac !
ffmux_mp4 !
filesink location=rec.audio.mp4
The resulting mp4 file can not be played normally with any
player I
tried (vlc, QuickTime,...). The mp4info command from MPEG4IP
reports the
following:
mp4info version 1.5
rec.audio.mp4:
Track Type Info
1 audio MPEG-4 AAC main, 16.157 secs, 0 kbps, 22050 Hz
As you can see, this must be incorrect, since we specified 4
seconds for
audiotestsrc. I understand that this is a known bug and has
been
previously submitted to Bugzilla as Bug 371939. I still
kindly ask all
Gstreamer developers to generate a patch for fixing this
issue. Please
contact me if you would consider fixing - I would be willing
to offer
some prize for the solution.
Best regards,
Gergely
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