[FFmpeg-user] Best way to record video on a computer with a really bad CPU yet really good GPU?

Sven C. Dack sven.c.dack at sky.com
Sun Sep 4 11:37:25 EEST 2016

On 04/09/16 09:25, Carl Eugen Hoyos wrote:
> 2016-09-04 10:16 GMT+02:00 Sven C. Dack <sven.c.dack at sky.com>:
>> $ ffmpeg -f x11grab -s 1920x1080 -i :0.0 -f rawvideo /dev/null
>> (I.e. 30fp/s, 2gbit/s)
>> This will tell you how fast you can grab at the most. Here the
>> screen size is set to be 1920x1080.
>> Then reduce it with the "-r" option:
> No!
*lol* It used to work like this in the past and it still does (I had tested each 
example line before posting). I hadn't noticed there was now a -framerate option 
for this. Good to know, thanks.


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