[Ffmpeg-devel] frame accept question

Rich Felker dalias
Mon Oct 10 12:02:55 CEST 2005

On Mon, Oct 10, 2005 at 11:39:21AM +0200, Michel Bardiaux wrote:
> Martin Boehme wrote:
> >>>Martin
> >>
> >>
> >>Actually, I experienced that MPEG is't the best codec for screen 
> >>capturing, so I started to read a little bit more and suddenly, I 
> >>realised that if a particular codec would support the VNC-way of 
> >>updating screens/frames, the encoding would be very simple and the 
> >>resulting file probably very small.
> >>Does anyone know of such a codec? (Apart of the VNC protocol itself 
> >>off course)
> >
> >
> >Not sure if there's anything in FFmpeg that will work well, because most 
> >of the codecs are designed for "real-world" videos. 
> Unfortunately, "real world videos" is a moving target. With the advent 
> of digital TV, you can be 'fully digital' from the production studio to 
> the end-user device, and the result is that a static image like a 
> credits list will be perfectly constant in the end device (say a PVR) 
> and that is going to play hell with MPEG CBR encodings... which are 
> mandated by DVD standards, no?

No, DVD does not have a minimum bitrate afaik. Only VCD and maybe SVCD
do. Anyway an encoder should be able to stuff with tons of zeros. Or
even just encode a frame as intra-only when the bitrate gets too low..


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