[FFmpeg-devel] [PATCH] encoder for adobe's flash ScreenVideo2 codec
Tue Jul 21 18:36:46 CEST 2009
Joshua Warner wrote:
> Hi all,
> I've developed an encoder for Adobe's Flash ScreenVideo2 format, which is
> stored in flv files. My encoder currently only supports a large subset of
> the format. The only player that supports this codec (so far) is Adobe
> Flash Player itself, but ScreenVideo2 makes dramatic improvement in file
> size over ScreenVideo (currently in ffmpeg as flashsv) - and should be very
> useful for uploading screencasts, etc. Most options (block size, etc) now
> just fall back on defaults because I couldn't find a general algorithm that
> produced consistantly better results than these. All the code is in place
> to be able to change these parameters dynamically, so future improvements
> there should be easy. The patch is attached.
> The codec is listed as flashsv2 in ffmpeg.
> Joshua Warner
Cool, can you create some sample files and upload them to
And it would be nice if you could do the decoder also. At least for the
modes you support encoding for. I'll try to do a review of the code soon.
More information about the ffmpeg-devel