20 seconds of mp4 = 800 mb yet same quality
That all depends on the enconding settings and I guess he had super-duper quality set.You're doing something wrong then. 1080p 60 fps 4 minutes long video is just 369 mb for me.
Well if he set bit rate over 12 Mb/s then it might be the reason.That all depends on the enconding settings.
It's not just about bitrate, there are plenty of encoding setting can be adjusted from speed of encoding that can add extra data to manually setting the key frames. That all will be represented as different bitrate in the end, but don't mix up the result and the reason.Well if he set bit rate over 12 Mb/s then it might be the reason.
What I use as pipecommand is: ffmpeg -f avi -i - -threads 0 -preset ultrafast -y -pix_fmt yuv420p -crf 1 %o.mp4 2> ffmpeglog.txtYou're doing something wrong then. 1080p 60 fps 4 minutes long video is just 369 mb for me.