[gst-devel] no audio when file with audio-video streams is played

Jyoti jyoti.d at allaboutif.com
Thu Aug 20 06:46:51 CEST 2009


Thanks for your suggestion.

1. I added a queue between demuxer & the decoders.
Now some files play video well but without audio.
I still get the same result.

2. And for some files with audio - video content the
pipeline doesn't change to playing. The pipeline changes
to GST_STATE_CHANGE_ASYNC state when I wait for pipeline to
change to PLAYING in gst_element_get_state().

Observation:
The state change problem much occurs with files of type H2.64 video &
AAC audio.



On Wed, Aug 19, 2009 at 12:02 PM, sudarshan bisht <bisht.sudarshan at gmail.com
> wrote:

> Try using queue between demuxer and decoders .
>
> On Wed, Aug 19, 2009 at 11:09 AM, Jyoti <jyoti.d at allaboutif.com> wrote:
>
>> Hi all,
>>
>> I am writing an application to play a media file.
>> 1. The audio doesn't play at all when both audio & video pads
>> generated by demuxer are connected to separate bins
>> called audio & video bins.
>> 2. when I discard the video pad and connect only audio pad to
>> audio bin I am able to hear the audio.
>>
>> The same file plays well with playbin. And I am using the elements
>> as in playbin.
>>
>> *Observation:*
>> 1. On catching bus messages for warning I get this message
>> "*Compensating for audio synchronisation problems*"
>> 2. The video pad is generated first & then the audio pad
>>
>> *The playbin elements are as below:*
>> filesrc->mpegtsdemux
>> ->ffdec_h264->ffmpegcolorspace->videoscale->xvimagesink
>>
>> ->mad->audioconvert->audioresample->alsasink
>>
>> Can someone please suggest some ideas on this?
>>
>> Thanks,
>> Jyoti
>>
>>
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>
>
> --
> Regards,
>
> Sudarshan Bisht
>
>
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