Hello, I found that yuv444p h.264 files are much slower to decode than files of yuv420p. For example, I have some 1900x1200 48-fps video files with the following decoding speed:
- x264 lossless yuv444p: decoding at 30 fps - x264 lossless yuv420p: decoding at 80 fps (the files are generated by ffmpeg/libx264 from the same source using same settings except for color space) My CPU is relatively beefy (Intel i7 3770 @ 3.40GHz, 4-core), but the yuv444p decoding speed is lower than the video file's fps, which means that I can't play them. I understand that yuv444p can be slower to decode. I have the following three questions: 1. Is it that slow? Does decreasing from 80 to 30 fps sound right to you? Or am I doing something wrong? 2. I want to archive the files in yuv444p. Is there any option that can make ffplay play these files faster? I don't mind losing replay quality for now, but I do need to keep yuv444p files. 3. Are there any chance that the software (ffmpeg or x264/x265) can get better optimized in the near future (1 or 2 years?) Or do I need to buy a better computer to replay them? Thanks in advance for your help. Any comments are welcome! -- Yan _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user