Michel Bardiaux (mbardiaux@xxxxxxxxxxx): > Depends on *what* later processing tools you use. The thread started > with a requirement of 25fps and a lossless codec supported by matlab. > But if you write your own post-processing tools, you can just use > ffmpeg with a .yuv output file. That will give you one big file of > successive frames of raw video in YUV420PL format. Not the easiest > format to use, but I think this is the lossless format that will > stress the CPU and IO the least. It is also an acceptable input format > for ffmpeg in case you want to encode later. > > Friendlier lossless codecs will use more CPU and IO and probably > produce bigger files. (BTW I found that if the disk is IDE one *has* > to use hdparm to turn DMA on, or you will lose frames). FWIW, I wrote a lossless codec that is extremely cheap for encoding (decoding is still slower than I like). http://scanline.ca/compression/ It's kinda like huffyuv, which I think is supported in ffmpeg now. -Billy
