Graph showing the encoded output file size for all FFmpeg x265 presets (KB) ffmpeg comparison x265 output size chart Graph showing the encode speeds for all FFmpeg x265 presets, time is in seconds ffmpeg comparison x265 encode time chart Lets see: FFmpeg x265 preset encode comparison Charts The server i used to run these FFmpeg encoding comparisons was: 2x E5-2650 v2 (16 cores, 32 threads), 64GB ram, SSD.īefore undertaking the testing I was well aware that x265 will take longer to encode and the files sizes will be smaller than the same preset with x264. The unspecified source video file used for this comparison was: 24,000,564KB in size, 1920×1080 19,194Kb/s. Not all devices can play (decode) x265 either, although in recent years this has become less of a problem. X265 or HEVC is a more modern codex than x264 (h.264), it is harder on the CPU and takes longer. In this part 2 of FFmpeg encoding comparisons I look at x265 presets, their speed and output file size. FFmpeg preset is the value in which speed the media encode will traverse at.
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