https://bugs.kde.org/show_bug.cgi?id=498263
--- Comment #4 from bugreports.l7...@aleeas.com --- (In reply to emohr from comment #3) > Do not use H264 encoding due to YUY 4:4:4 encoding limitations. > Use x264 encoding with -qp 0 parameter to get a lossless YUY 4:4:4 output > file. H264 is what x264 encodes to. I'm assuming that you're talking about hardware H264 encoders (as opposed to x264 which is a software encoder). I've always used x264 because I know that my hardware encoder can't do 4:4:4. > YUV 4:4:4 pixel format (yuv444p) can be used for H.264 encoding, but it has > limitations. While x264 supports lossless encoding with yuv444p, it requires > specific configurations, such as using -qp 0 for lossless output. According to FFmpeg's wiki (https://trac.ffmpeg.org/wiki/Encode/H.264#a1.ChooseaCRFvalue), using -crf 0 is lossless for 8-bit videos, but I did run another test using -qp 0 to see if anything changed. See the image I attached. Unfortunately, Kdenlive still renders with inaccurate colors, even though I set qp=0 in the render script. The artifacts look similar to an FFmpeg render at yuv422p. -- You are receiving this mail because: You are watching all bug changes.
