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

[thiagoss]

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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> is the only developer event you need to attend this year. Jumpstart your
> developing skills, take BlackBerry mobile applications to market and stay
> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
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>


-- 
Thiago Sousa Santos
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