Audio and video synchronisation

[Andreas Rödig]

Hi,

i have checked playbin2 pipeline. And this is the result:

gst-launch filesrc location=/home/roedig/Videos/StarTrek.mov ! typefind 
! qtdemux name=demux demux.video_00 ! fluvadec ! fluvasink 
demux.audio_00 ! fluaacdec ! queue ! pulsesink

It works and it is synchron. But i need some harddisk buffer like this 
(with queue2 after filesrc):

gst-launch filesrc location=/home/roedig/Videos/StarTrek.mov ! queue2 ! 
typefind ! qtdemux name=demux demux.video_00 ! fluvadec ! fluvasink 
demux.audio_00 ! fluaacdec ! queue ! pulsesink

Then i see video but i can hear audio only the first one or two seconds. 
Then i try this (with queue after demux.video_00):

gst-launch filesrc location=/home/roedig/Videos/StarTrek.mov ! queue2 ! 
typefind ! qtdemux name=demux demux.video_00 ! queue ! fluvadec ! 
fluvasink demux.audio_00 ! fluaacdec ! queue ! pulsesink

Now i can hear sound and see video. But video starts after sound with a 
delay at 2 seconds.

Andreas


Am 11.10.2011 07:01, schrieb hcpwll:
> Hi,
>       Do you have check the elements create by playbin2?
>       Maybe playbin2 use diffrent demux, decode or sink element.
>
> At 2011-10-10 21:25:45,"Andreas Rödig"<a.roedig at null821.de>  wrote:
>> Hi,
>>
>> yes, playbin2 works fine. I think there is something wrong with my queue
>> in my pipeline. But i don't find some options to sync data streams in
>> pipeline.
>>
>>
>> best Regards,
>> Andreas
>>
>> Am 10.10.2011 15:09, schrieb Icarus Alive:
>>> On Mon, Oct 10, 2011 at 12:16 PM, Andreas Rödig<a.roedig at null821.de>   wrote:
>>>> Hi,
>>>>
>>>> i try to build my own pipeline (without playbin2).
>>>>
>>>> Thats what i have at the moment:
>>>>
>>>> gst-launch filesrc location=movie.mov ! queue2 ! qtdemux name=demux
>>>> demux.video_00 ! queue ! fluvadec ! fluvasink demux.audio_00 ! queue !
>>>> fluaacdec ! autoaudiosink
>>>>
>>>> My Problem:
>>>> The Audio is starting directly. But video starts with a 2 seconds delay. And
>>>> than audio and video are not synchron.
>>>>
>>>> What i have to do for synchron video and audio?
>>>
>>> try to print debug traces with playbin2 and figure out it's pipeline.
>>> i hope the sync issue isn't seen with playbin2 ?
>>> in my case, a streaming asf source plays pretty well (no observable
>>> sync issues), but in my "optimized" pipeline, which was built by
>>> observing playbin2, doesn't fare so well. I think in my optimization
>>> drive, I've chopped off some necessary "sync" elements. recreating the
>>> playbin2 pipeline using discrete elements on command-line, completely,
>>> has been a challenge.
>>>
>>> i hope someone can shed some more light on this subject.
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>> --
>> Andreas Rödig
>>
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