FFMPEG Command to Compress or Reduce Video Mp4 File Size in Windows 10 Full Tutorial For Beginners


Simple Command to Reduce or Compress Video File Size in FFMPEG



Now let’s suppose you want to reduce or compress input file called input.mp4


input file : input.mp4


output file : output.mp4


Command is:


ffmpeg -i input.mp4 output.mp4


So output.mp4 will be reduced and compressed in size. FFmpeg automatically will apply the default compressions and it will considerably reduced the file video size.



Video Compressions Using crf flag




You can also reduce the file size by applying the flag called as crf flag like this



ffmpeg -i input.mp4 -vcodec libx265 -crf 28 output.mp4




Video Compression by Using Bitrate




ffmpeg -i input.mp4 -b 800k output.mp4



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