FFmpeg speed up video
Speed up and smaller: ffmpeg -i input.mp4 -filter_complex "[0:v]setpts=0.5*PTS[v];[0:a]atempo=2.0[a]" -map "[v]" -map "[a]" output.mp4 Speed up and bigger: ffmpeg -i in.mp4 -vf "setpts=0.5*PTS" -r 50 -c:v mpeg4 -b:v 1500k -af "atempo=2" out.mp4 For .bat in folder on Windows: for %%* in (.) do set DirName=%%~nx* mkdir "%DirName%" for %%i IN (*.mp4) DO ffmpeg -i "%%i" -filter_complex "[0:v]setpts=0.5*PTS[v];[0:a]atempo=2.0[a]" -map "[v]" -map "[a]" "%DirName%/%%i" pause If you want to convert other-format video to .mp4 on Windows: for %%a in ("*.flv") do ffmpeg -i "%%a" -codec copy "%%~na.mp4" for %%a in ("*.flv") do del "%%a" If you want to convert other-format to .mp4 on linux: for file in *.mkv; do sudo ffmpeg -i "$file" -codec copy "${file%.mkv}".mp4; done rm -fr *.mkv ( sudo mkdir d