[FFmpeg-user] Compressed file is larger than original...

[Michael Koch]

Am 25.06.2021 um 20:40 schrieb iburman at compuscience.com:
> I'm trying to reduce the size of an mp4 file to adjust it for streaming. The
> video is about one minute long and I used the sample command shown in
> https://trac.ffmpeg.org/wiki/Encode/YouTube.
>
>   
>
> The original file size is ~18MB while the compressed file ended up at 25MB.
> While would the compressed file be larger?
>
>   
>
> Below is the ffmpeg output:
>
>   
>
> ffmpeg -i HBR_TT747.mp4 -c:v libx264 -preset slow -crf 18 -c:a copy -pix_fmt
> yuv420p HBR_TT747_Compressed.mp4

try a larger value for -crf

Michael