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App to record screen ?
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Vinouch 21 Sep

Hello,
Can you suggest a good app to make a video to record the screen while gaming with lose minor FPS please? I tryed simplescreenrecorder, but I lose 50 fps while recording.
link

Last edited by Vinouch on 21 September 2020 at 5:55 pm UTC

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stan 21 Sep
  • Supporter

I think most people use OBS, but from a little research I just did on the web, it seems hardware encoding with AMD cards is either impossible or low quality… And your i5 is probably not fast enough for good quality real time encoding (except if you are not streaming but just saving the video on disk, then you can use high bitrate fast encoding I guess).

Last edited by stan on 21 September 2020 at 6:48 pm UTC

Liam Dawe 22 Sep

OBS Studio is pretty much the standard for this.

As stan pointed out, your i5 is a bit of a bottleneck since it has to share the load with both the game and recording.

To minimize the fps loss I suggest lowering the quality a bit, don't use any compression (this will minimize cpu usage but produce large files. Also if you have 2 drives, don't save the video on the same drive as the game you're recording as this will create a bit of stutter (especially if it's an HDD).

Simplescreenrecorder is not bad, it's what I use for my game recordings with very minimal frame loss. However this is possible due to high thread count and carefully dividing the load using the 'taskset' command.

OBS is also very good and is a much more featured program than SSR.

Last edited by Avehicle7887 on 22 September 2020 at 10:38 pm UTC

mrdeathjr 23 Sep

ffmpeg with nvidia nvenc is very good

Vinouch 23 Sep

You have comments rocks. Thanks. I tested some of your suggest. But currently, with OBS, the recording with vaapi don't use my GPU and only use cpu. So, I had further more and I found the soluce to record screen while gaming with AMD hardware encoding without lose FPS. I use the following command. Of course, it's not easy to start/stop recording. I will make a GUI front end soon.
ffmpeg -vaapi_device /dev/dri/renderD128 -f x11grab -video_size 1920x1080 -i :0 -vf 'hwupload,scale_vaapi=format=nv12' -c:v h264_vaapi -b:v 15M -preset superfast '/home/username/screenrecord.mp4'



Last edited by Vinouch on 23 September 2020 at 1:49 pm UTC

whizse 23 Sep
  • Supporter

It's a little bit fiddly to get working, but you might want to use kmsgrab instead of x11grab to capture the screen. It will minimize CPU usage and framedrops as all surfaces stay on the GPU.

(Also works on Wayland and in virtual terminals!)

Dragunov 27 Sep

I prefer Kazam screen recorder. It is extremely easy to use and lightweight.

Vinouch 4 Oct

I found exactly what I need.

A small GUI to record in VAAPI:

https://github.com/Philippe734/tiny.vaapi.recorder

link

Quoting: VinouchI found exactly what I need.

A small GUI to record in VAAPI:

https://github.com/Philippe734/tiny.vaapi.recorder

link

Looks good I'm gonna try with some proton games that my FPS dropped significantly when recording with simple screen recorder.

mrdeathjr 5 Oct

Quoting: VinouchI found exactly what I need.

A small GUI to record in VAAPI:

https://github.com/Philippe734/tiny.vaapi.recorder

link

link

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