Here is my totally non-scientific, back of a napkin, H265 to H264 encoder speed comparison. Full software, no GPU assist using FFMPEG, libx265 and libx264. Machine is a dual quad core, hyperthreaded machine, which totals 16 threads. Very slow hard drive. ==================================================================== === === Encode with FFMPEG === === Input file: ArcticTale_TRL_MPEGPS_MPEG2_PCM_1080p_16-9_23-97_2-0 === Input frames: 2670 === Output FOURCC: YUV420p === Video only === === libx264 Encode: 102.5565403 seconds, File Size: 125 MB === libx265 Encode: 355.5555596 seconds, File Size: 20 MB === ==================================================================== ============================ libx264 Encode Command Line ============================ measure-command { ffmpeg -i .\ArcticTale_TRL_MPEGPS_MPEG2_PCM_1080p_16-9_23-97_2-0.mpg -an -vcodec libx264 -pix_fmt yuv420p out_h264.mp4 } ffmpeg version N-76822-g12a419d Copyright (...
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