[gst-devel] Could not capture AAC audio in mp4mux properly, help !!!
yiliangb at gmail.com
Wed Oct 7 09:07:44 CEST 2009
I used the following pipeline:
gst-launch alsasrc ! faac, bitrate=48000, profile=2 ! mp4mux ! filesink
The file was generated, but it could not be played back by gstreamer using
the following pipeline:
gst-launch filesrc location=test.m4a ! decodebin ! autoaudiosink
Following messages are generated. It seems that the file was not generated
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
ERROR: from element
file is invalid and cannot be played.
Additional debug info:
qtdemux.c(1447): gst_qtdemux_loop_state_header ():
Header atom 'mdat' has empty length
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...
I checked the binary, and the length field of mdat is indeed 0, and I could
not find any atoms, like moov, mvhd, etc., that describe the media.
Is this the right pipeline to capture audio in MP4 file? Thanks!!
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