[FFmpeg-user] why ffmpeg takes lot of cpu?

comp4me liopoi at computer4u.com
Thu Nov 23 21:21:47 EET 2017

i run this command on pc with cpu i5

ffmpeg -i rtsp://x.x.x.x -i 2.264  -preset ultrafast -filter_complex
"[0]crop=20:20:20:20[a];[a][1] overlay=0:0"
i see how much this process takes me with "top" command(ubuntu)
I see that it takes my 250% cpu 
why it takes so much cpu please?
what can i do to reduce that?

Sent from: http://www.ffmpeg-archive.org/

More information about the ffmpeg-user mailing list