Author: linux

ffmpeg -i test.mp4 -vf fps=15 ff_fps.mp4 ffmpeg -i test.mp4 -vf setpts=0.5*PTS ff_setpts.mp4

root135@root135:~/Documents$ ffmpeg -formats | grep PCM ffmpeg version 4.4.2-1 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 8 (Uos 8.3.0.3-3+rebuild) configuration: –prefix=/usr –extra-version=1 –toolchain=hardened –libdir=/usr/lib/x86_64-linux-gnu –incdir=/usr/include/x86_64-linux-gnu –arch=amd64 –enable-gpl –disable-stripping –enable-gnutls –enable-ladspa –enable-libaom –enable-libass –enable-libbluray –enable-libbs2b –enable-libcaca –enable-libcdio –enable-libcodec2 –enable-libdav1d –enable-libflite –enable-libfontconfig –enable-libfreetype –enable-libfribidi –enable-libgme –enable-libgsm –enable-libjack –enable-libmp3lame –enable-libmysofa –enable-libopenjpeg –enable-libopenmpt –enable-libopus –enable-libpulse –enable-librabbitmq –enable-librubberband… Continue reading ffmpeg-formats

#1,水平翻转 #-vf filter_graph，用来设置: video filters #hflip 水平翻转 ffmpeg -i input.mp4 -vf “hflip” ff_hflip.mp4 #2,垂直翻转 #vflip: 垂直翻转 ffmpeg -i input.mp4 -vf “vflip” ff_vflip.mp4 0:逆时针旋转90度并垂直翻转 1:顺时针旋转90度 2:逆时针旋转90度 3:顺时针旋转90度后并垂直翻转 1,顺时针旋转90度: ffmpeg -i input.mp4 -vf “transpose=1” 8_t1.mp4 2,逆时针旋转90度 ffmpeg -i input.mp4 -vf “transpose=2” 8_t2.mp4 3,顺时针旋转90度后并垂直翻转 ffmpeg -i input.mp4 -vf “transpose=3” 8_t3.mp4 4,顺时针旋转180度 ffmpeg -i input.mp4 -vf “transpose=2,transpose=2” 8_t5.mp4 5,指定角度:90度… Continue reading ffmpeg-flip

ffmpeg version 4.4.2-1 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 8 (Uos 8.3.0.3-3+rebuild) configuration: –prefix=/usr –extra-version=1 –toolchain=hardened –libdir=/usr/lib/x86_64-linux-gnu –incdir=/usr/include/x86_64-linux-gnu –arch=amd64 –enable-gpl –disable-stripping –enable-gnutls –enable-ladspa –enable-libaom –enable-libass –enable-libbluray –enable-libbs2b –enable-libcaca –enable-libcdio –enable-libcodec2 –enable-libdav1d –enable-libflite –enable-libfontconfig –enable-libfreetype –enable-libfribidi –enable-libgme –enable-libgsm –enable-libjack –enable-libmp3lame –enable-libmysofa –enable-libopenjpeg –enable-libopenmpt –enable-libopus –enable-libpulse –enable-librabbitmq –enable-librubberband –enable-libshine –enable-libsnappy –enable-libsoxr –enable-libspeex –enable-libsrt –enable-libssh… Continue reading ffmpeg -h filter=xfade

#ffmpeg -i bg.jpg -i 0-5-eq.jpg -filter_complex “[1:v] scale=552:23[logo];[0:v][logo]overlay=x=3:y=0” bg-0-5.jpg && #ffmpeg -i bg-2-0-5.jpg -vf “eq=contrast=2” -f image2 bg-2-0-5-eq.jpg && ffmpeg -i ffmpeg-A4.jpg -i ffmpeg-A4-25×30.jpg -filter_complex “[1:v] scale=558:781[logo];[0:v][logo]overlay=x=18:y=30” ffmpeg-A4-25×30-0.jpg && ffmpeg -i ffmpeg-A4-25×30-0.jpg -vf “eq=contrast=2” -f image2 ffmpeg-A4-25×30-true.jpg && exit ffmpeg -i test_0.mp3 -i test_1.mp3 -filter_complex “[0:a]aresample=44100,aformat=fltp[a1];[1:a]aresample=44100,aformat=fltp,volume=1[a2];[a1][a2]amix” ff_amix.mp3 ffmpeg -i test.mp4 -i ship.mp3 “[0:a]aresample=44100,aformat=fltp[a1];[1:a]aresample=44100, aformat=fltp,volume=0.5[a2];[a1][a2]amix” ff_amix.mp4