On Fri, 2007-09-14 at 14:27 +1000, Mark Heath wrote: > :-) yeah that's my version.
Ohh, oops! > I am thinking about doing something more intelligent than line > doubling. (maybe adaptive blending) Oh yes, please do! :) > And making better support for different chroma subsampling, but maybe > next week. Less urgent, since many yuv4mpeg tools seem to be hardwired to 4:2:0. But in a perfect world, all the tools would support all the ss modes. > There are a lot of good deinterlacing algorithms out there but most > of the implementations are for systems other than mjpegtools. mjpegtools absolutely needs a lossless deinterlacer. > I also improved my weighted average framerate converter after seeing > that yuvfps was giving incorrect results on converting to very slow > framerates. (1fps) I've been getting great results with yuvmotionfps, especially when block size and search radius are tuned appropriately for the footage. > I'm finding the motion compensating de-interlacers a little slow and > the artefacts it introduces a little annoying. Better IMHO to go progressive at double framerate. > Thanks for the support, it's good to hear that it is making use > somewhere, if you need any improvements, let me know. I've just updated and uploaded my Python yuv4mpeg wrappers, this time adding a much nicer/leaner/cleaner wrapper built with Pyrex. Performance is surprisingly good given that Python code is iterating over every pixel. What would be brilliant is a tool to convert 4:2:0 to 4:4:4alpha and back, and for all the mjpegtools and 3rd party yuv4mpeg tools to support 4:4:4alpha. Doing the maths to convert 4:2:0 YUV to RGB and back is presently a coding pain and a resource waster. And - would be awesome if ffmpeg had options to output YUV streams with any chroma subsampling. It seems hardwired to 4:2:0 at the moment. Cheers David > > Mark > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Mjpeg-users mailing list > Mjpeg-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mjpeg-users ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
