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

Carl Eugen Hoyos ceffmpeg at gmail.com
Sun Sep 4 13:25:15 EEST 2016

2016-09-04 10:37 GMT+02:00 Sven C. Dack <sven.c.dack at sky.com>:
> 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

Yes but this is a bug and you will most likely not be
informed when it gets fixed.

Carl Eugen

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