[gst-devel] Could not capture AAC audio in mp4mux properly, help !!!

[Yiliang Bao]

Thanks, Thiago and Sudarshan. I tested both approaches. "-e" works
perfectly, but setting num-buffers does not work though.

On Wed, Oct 7, 2009 at 3:51 AM, thiagoss <thiagossantos at gmail.com> wrote:
>
>
> On Wed, Oct 7, 2009 at 5:05 AM, sudarshan bisht <bisht.sudarshan at gmail.com>
> wrote:
>>
>> Set num-buffers property in alsasrc .
>
> Or use "gst-launch -e". The problem here is that the pipeline is not
> properly finished (receives an EOS event), using -e will force an EOS when
> you press ctrl+c. Using num-buffers will make the alsasrc push an EOS when
> the number of buffers is generated.
>
>>
>>
>>
>> On Wed, Oct 7, 2009 at 12:37 PM, Yiliang Bao <yiliangb at gmail.com> wrote:
>>>
>>> Hi,
>>>
>>> I used the following pipeline:
>>>
>>>    gst-launch alsasrc ! faac, bitrate=48000, profile=2 ! mp4mux !
>>> filesink
>>> location=test.m4a
>>>
>>> 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
>>> properly.
>>>
>>> Setting pipeline to PAUSED ...
>>> Pipeline is PREROLLING ...
>>> ERROR: from element
>>> /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQTDemux:qtdemux0: This
>>> file is invalid and cannot be played.
>>> Additional debug info:
>>> qtdemux.c(1447): gst_qtdemux_loop_state_header ():
>>> /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQTDemux:qtdemux0:
>>> 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!!
>>>
>>> Yiliang
>>>
>>> --
>>> View this message in context:
>>> http://www.nabble.com/Could-not-capture-AAC-audio-in-mp4mux-properly%2C-help-%21%21%21-tp25781565p25781565.html
>>> Sent from the GStreamer-devel mailing list archive at Nabble.com.
>>>
>>>
>>>
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>>
>>
>>
>> --
>> Regards,
>>
>> Sudarshan Bisht
>>
>>
>> ------------------------------------------------------------------------------
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>
>
>
> --
> Thiago Sousa Santos
>
> ------------------------------------------------------------------------------
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