[Ffmpeg-devel] specific codec question

Mike Melanson mike
Wed Oct 12 18:42:01 CEST 2005

Bram Biesbrouck wrote:
> Hi,
> Does anyone know of a codec that doesn't need a fixed (or minimal) number of 
> frames per second? To be specific: I'm looking for a codec that accepts a new 
> frame (or maybe just an update rectangle?) when something changed in the 
> previous one. So when nothing changes for 5 sec, it doesn't need a new frame, 
> it just displays the last one.

	Macromedia Flash, perhaps? Aside from that, there are some custom 
codecs that are designed for this type of application. For example, Duck 
Truemotion 1 was supposed to have sprite modes. It seems to me that even 
MPEG-4 has provisions for sprites. How well this is supported is another 

	-Mike Melanson

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