[vlc-devel] Re: New Decoder API

[Stephan Assmus]

Gildas Bazin wrote on Tue, 25 Nov 2003 00:38:57 +0100:

> On Saturday 22 November 2003 20:05, Stephan Assmus wrote:
> > Hi gang,
> > 
> > I just wanted to know if it was possible for an interface plugin 
> > with 
> > the new API, to tell a decoder to skip to a certain video frame 
> > (number), with the option to skip to the closest keyframe backwards 
> > or 
> > forward instead of the exact requested frame.
> > 
> 
> No it isn't possible.
> 
> It's not really the job of the decoder to do that and actually VLC 
> should 
> implement this feature in the future but at the demuxer level.
> Most containers do implement ways of seeking to a specific frame so 
> when 
> supported, a demuxer will be able to export this feature.
> 
> Alternatively it could also be possible to use the elementary streams 
> packetizers to skip frames but that would add a parsing overhead to 
> the 
> decoding step.

So what happens when the user drags the position slider in whatever 
interface he is using (concerning the difference between old and new 
API)? As a programmer, telling VLC to skip to a key frame closest to a 
certain frame (as calculated by the slider) would be exactly the most 
desirable.

Best regards,
-Stephan

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