FastFoward and FastRewind Issue with Gstreamer

[Stefan Kost]

On 07/22/11 10:57, Elmy Elias wrote:
>
> Hi,
>
>  
>
> Iam developing a media player  using Qtgstreamer .
>
>  
>
>  
>
> Below APi  is been used for Seek functionality.But for fastforward and
> FastRewind   functionality not working properly with these Api.
>
>  gst_event_new_seek(rate, static_cast<GstFormat>(format),
>                                       static_cast<GstSeekFlags>(static_cast<int>(flags)),
>                                        static_cast<GstSeekType>(startType), start,
>                                        static_cast<GstSeekType>(stopType), stop );
>
>  
>
> Oggdemux and vorbisdec are used  to play Ogg files.For  oggstreams 
> fastforward and rewind is working,,but when you consider the
> performance ,I have observed that  there is  a delay in switching from
> rewind state to fastforward state. Observed that  there is a time
> delay  if you press on fastforward when the stream actually doing a
> backward seek….
>
you mean forward seek.. How big delay is it? It might be a few ms.
>
>  
>
> But for other streams like  AAC,Wma,MP3 with  FFMpeg support 
> fastforward and rewind is not working…pipeline stops playing when 
>  there is switch from fastforward state to Rewind state..
>
Not all formats support it well yet. To narrow it doen, you could use
the seek example from gst-plugin-base/test/examples/seek - its a UI that
lets you play with the various seek modes.

Stefan
>
>  
>
>  
>
> Can anyone please let me know what is the exact  seekApi  to be used.
>
>  
>
> How is the performance with opensource codec with gstreamer in case of
> fastforward and fastrewind.
>
>  
>
>  
>
> Thanks & Regards
>
> Elmy
>
>  
>
>
> *Elmy Elias
> *
>
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