libaom 编码速度 speed=0.0178x 真的无法忍受这个速度，每秒只能处理 2-3个帧
相比 libaom ，libsvtav1 速度有所提升 speed=0.0966x 差不多提升了 10倍左右
ffmpeg 现在支持 libsvtav1，只有 x64 才能用，x86 不支持
ffmpeg -i D:media est.mp4 -c:v libsvtav1 -y test-libsvtav1.mp4 ffmpeg version N-99286-gc7867b6ed1 Copyright (c) 2000-2020 the FFmpeg developers built with gcc 9.3-win32 (GCC) 20200320 configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --enable-iconv --enable-zlib --enable-libxml2 --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvmaf --enable-vulkan --enable-libvorbis --enable-amf --enable-libaom --enable-avisynth --enable-libdav1d --enable-ffnvcodec --enable-cuda-llvm --enable-libglslang --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvpx --enable-libwebp --enable-libmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librav1e --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libvidstab --disable-libwavpack --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-libs=-lgomp libavutil 56. 59.100 / 56. 59.100 libavcodec 58.106.100 / 58.106.100 libavformat 58. 58.100 / 58. 58.100 libavdevice 58. 11.102 / 58. 11.102 libavfilter 7. 87.100 / 7. 87.100 libswscale 5. 8.100 / 5. 8.100 libswresample 3. 8.100 / 3. 8.100 libpostproc 55. 8.100 / 55. 8.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D:media est.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf58.35.101 Duration: 00:00:31.35, start: 0.000000, bitrate: 3127 kb/s Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 3117 kb/s, 31.18 fps, 60 tbr, 15360 tbn, 60 tbc (default) Metadata: handler_name : VideoHandler Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default) Metadata: handler_name : SoundHandler Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> av1 (libsvtav1)) Stream #0:1 -> #0:1 (mp3 (mp3float) -> aac (native)) Press [q] to stop, [?] for help ------------------------------------------- SVT [version]: SVT-AV1 Encoder Lib v0.8.4-123-ge9ffb5ee SVT [build] : GCC 9.3-win32 20200320 64 bit LIB Build date: Sep 20 2020 01:08:06 ------------------------------------------- Number of logical cores available: 4 Number of PPCS 62 [asm level on system : up to avx2] [asm level selected : up to avx2] ------------------------------------------- SVT [config]: Main Profile Tier (auto) Level (auto) SVT [config]: EncoderMode : 8 SVT [config]: EncoderBitDepth / EncoderColorFormat / CompressedTenBitFormat : 8 / 1 / 0 SVT [config]: SourceWidth / SourceHeight : 1280 / 720 SVT [config]: Fps_Numerator / Fps_Denominator / Gop Size / IntraRefreshType : 30 / 1 / 33 / 2 SVT [config]: HierarchicalLevels / PredStructure : 4 / 2 SVT [config]: BRC Mode / QP / LookaheadDistance / SceneChange : CQP / 50 / 16 / 0 ------------------------------------------- Output #0, mp4, to 'test-libsvtav1.mp4':B time=-577014:32:22.77 bitrate= -0.0kbits/s speed=N/A Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf58.58.100 Stream #0:0(eng): Video: av1 (libsvtav1) (av01 / 0x31307661), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=0-63, 7000 kb/s, 30 fps, 15360 tbn, 30 tbc (default) Metadata: handler_name : VideoHandler encoder : Lavc58.106.100 libsvtav1 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default) Metadata: handler_name : SoundHandler encoder : Lavc58.106.100 aac frame= 904 fps=2.8 q=42.0 Lsize= 2778kB time=00:00:31.32 bitrate= 726.6kbits/s dup=5 drop=21 speed=0.0966x video:2258kB audio:495kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.932547% [aac @ 0000016ebfbc8b40] Qavg: 612.859
虽然编码速度不是很快，但是速度快接近 0.1 已经很不错了，希望还能快一些，能达到 1.0 就好了；