Op za 11 jun. 2022 01:37 schreef Аскар Сафин <safinas...@gmail.com>:
> ffv1 spec reads: "FFV1 is designed to support a wide range of lossless > video applications such as... screen recording..." Unfortunately, ffv1 > turned out to be bad compared to my codec > on screen recording data, so it is possible ffv1 could benefit from my > ideas. > While the spec indeed mentions screen recording, it seems the kind of screen recording you do is probably not a use where ffv1 shines. The spec abstract starts with "This document defines FFV1, a lossless, intra-frame video encoding format." Notice "intra-frame". ffv1 does not do inter-frame decorrelation like most other codecs do. So, when compressing data with high inter-frame correlation, ffv1 doesn't do well. ffv1 does very well on for example film scans, when the presence of film grain makes inter-frame decorrelation of relatively little use. In screen captures where > 95% of the frame stays exactly the same, this approach doesn't work well indeed. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
