Following on from the previous email, here are results of some testing. The files are 1080p videos from youtube
1) mortal engines movie trailer (youtube.com/watch?v=IRsFc2gguEg) 2) polar movie trailer (youtube.com/watch?v=oMHwRal-AR8) 3) solo movie trailer (youtube.com/watch?v=XRRNxIZfjHA) All ratio are normalized taking x265 2.8+74-fd517ae68f93 as base x265 3.0 is version 3.0_RC+10-42b51d791a34 x265 2.8 is from https://johnvansickle.com/ffmpeg/releases/ffmpeg-release-amd64-static.tar.xz x265 3.0 is from https://johnvansickle.com/ffmpeg/builds/ffmpeg-git-amd64-static.tar.xz all videos were encoded with 1.77 aspect ratio, i.e 424x240, 640x360,854x480 from the 1080p source videos --preset faster --crf 28 was used in all cases. +----------+------------------------------------------------------------------+ | file | bit rate ratios (x265 2.8 is 1x) | +----------+------------------------------------------------------------------+ | 1)Polar | +--------------+--------------+------------+-------------------+ | | | | video height | --no-hevc-aq | --hevc-aq | percent reduction | | | | +--------------+--------------+------------+-------------------+ | | | | 240 | 1.231 | 0.725 | 41.1 | | | | | 360 | 1.115 | 0.649 | 41.8 | | | | | 480 | 1.104 | 0.679 | 38.5 | | | | +--------------+--------------+------------+-------------------+ | | 2)Mortal | +--------------+--------------+------------+-------------------+ | | | | video height | --no-hevc-aq | --hevc-aq | percent reduction | | | | +--------------+--------------+------------+-------------------+ | | | | 240 | 1.164 | 0.633 | 45.6 | | | | | 360 | 1.149 | 0.681 | 40.7 | | | | | 480 | 1.079 | 0.668 | 38.1 | | | | +--------------+--------------+------------+-------------------+ | | 3)Solo | +--------------+--------------+------------+-------------------+ | | | | video height | --no-hevc-aq | --hevc-aq | percent reduction | | | | +--------------+--------------+------------+-------------------+ | | | | 240 | 1.088 | 0.711 | 34.7 | | | | | 360 | 1.046 | 0.741 | 29.1 | | | | | 480 | 0.995 | 0.739 | 25.8 | | | | +--------------+--------------+------------+-------------------+ | +----------+------------------------------------------------------------------+ +----------+----------------------------------------------+ | file | speed ratios (x265 2.8 is 1x) | +----------+----------------------------------------------+ | 1)Polar | +--------------+--------------+------------+ | | | | video height | --no-hevc-aq | --hevc-aq | | | | +--------------+--------------+------------+ | | | | 240 | 0.936 | 0.147 | | | | | 360 | 0.998 | 1.035 | | | | | 480 | 1.013 | 1.055 | | | | +--------------+--------------+------------+ | | 2)Mortal | +--------------+--------------+------------+ | | | | video height | --no-hevc-aq | --hevc-aq | | | | +--------------+--------------+------------+ | | | | 240 | 0.917 | 1.008 | | | | | 360 | 0.966 | 1.077 | | | | | 480 | 0.969 | 1.037 | | | | +--------------+--------------+------------+ | | 3)Solo | +--------------+--------------+------------+ | | | | video height | --no-hevc-aq | --hevc-aq | | | | +--------------+--------------+------------+ | | | | 240 | 0.944 | 0.998 | | | | | 360 | 1.017 | 1.044 | | | | | 480 | 0.989 | 1.033 | | | | +--------------+--------------+------------+ | +----------+----------------------------------------------+ _______________________________________________ x265-devel mailing list [email protected] https://mailman.videolan.org/listinfo/x265-devel
