ffmpeg -f lavfi -i color=ffffff:size=55×40 -frames:v 1 -vf “drawtext=fontfile=/usr/share/fonts/songhei.ttf:fontcolor=000000:fontsize=50:x=3:y=3:text=’三’:box=1:boxcolor=f0f0f0” test.ico -y

ffmpeg -filters|grep draw* 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… Continue reading ffmpeg -filters

ffmpeg -i test.mp4 -vf “split[o1][o2];[o1]palettegen[p];[o2][p]paletteuse” ff_palette.gif

[root@iZ8vb59gsqaa2gjbi6n8g6Z chapter06]# ffmpeg -h filter=fps ffmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg developers built with gcc 10 (GCC) configuration: –prefix=/usr/local/ffmpeg –enable-shared –disable-static –disable-doc –enable-zlib –enable-libx264 –enable-libx265 –enable-libxavs2 –enable-libdavs2 –enable-libmp3lame –enable-iconv –enable-gpl –enable-nonfree libavutil 57. 28.100 / 57. 28.100 libavcodec 59. 37.100 / 59. 37.100 libavformat 59. 27.100 / 59. 27.100 libavdevice 59. 7.100 /… Continue reading ffmpeg-fps-trim

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