[gst-devel] problem in using playbin

Stefan Kost ensonic at hora-obscura.de
Wed Aug 22 16:17:38 CEST 2007


can you please ensure that your mail get send in a readable format.  
Regarding the topic - I you have a/v sync issues then check which  
clock is used and ensure that your sinks render based on the same time  


Quoting pritesh <digitaldsp at excite.com>:

>  hi ,yeah i have a custom video sink where i call the display frame   
> api  of hardware decoder  in show_frame function   i have    
> initilaised the basesink's  render , preroll method to show_frame   
> function  i am also having a get_times function in the videosink for  
>  audio i am using  osssink.  ok if the videosink is incorrect  then   
> why the manual pipeline works fine with av sync(if i link the   
> elements by code)one more thing .........       since the video   
> decoder already puts decoded data in hardware frame buffer , so i am  
>  just passing fake buffer ( 16 byte fake data)  with timestamp and   
> duration (from qtdemux)  to downstream element from video decoder .   
>      can u help me in resolving this issue       --- On Tue 08/21,   
> Andy Wingo &lt; wingo at pobox.com &gt; wrote:From: Andy Wingo [mailto:  
>  wingo at pobox.com]To: digitaldsp at excite.comCc:   
> gstreamer-devel at lists.sourceforge.netDate: Tue, 21 Aug 2007 22:55:01  
>  +0200Subject: Re: [gst-devel] problem in using   
> playbinHello,"pritesh" writes:&gt;
> but av sync is missing in paused state itself some video frames are   
> displayed In the paused state, no audio is played, so sync is not a   
> problem&gt; and when i set state to playing the audio lags video   
> This can only be the case if either (1) your timestamps are   
> incorrect,or (2) you have custom sinks that are not respecting the   
> clocks.&gt; but when i create the pipeline using decodebin only then  
>  av sync is&gt; proper is this a preroll problem or videosink   
> problemSeems to indicate problems in your sinks.Regards,Andy.--   
> http://wingolog.org/
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