[FFmpeg-devel] Transcoding architecture

Michael Niedermayer michaelni
Wed Nov 3 16:55:47 CET 2010

On Wed, Nov 03, 2010 at 01:58:41PM +0300, Anatoly Nenashev wrote:
> Hi!
> In some situations it is possible to convert frame from one format to  
> another without full decoding and encoding.
> For example, MxPEG can be easily transformed in MJPEG and on the  
> contrary. There is some publications about H263 and MPEG4 transcoders to  
> H264.
> Is there some way to integrate such transcoders in FFmpeg?

1. bitstream filters
2. decoders can export MV, MB type, ... and encoders can use them, this is widely
   supported by existing code in ffmpeg.

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Asymptotically faster algorithms should always be preferred if you have
asymptotical amounts of data
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