Videoplayback performance / optimizations?

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Videoplayback performance / optimizations?

Postby capital4 » Wed May 09, 2018 1:07 pm

We are using the latest version of screensaver factory (enterprise) and try to create a screensaver (scr only) that loops a video file.

The video is a mp4 file with h264 codec, created (transcoded) with FFmpeg. It is about 10mb in size, full hd 1920x1080, and about 2 minutes long.
We want to display it fullscreen (scale proportionally) and loop forever.
We have activated the FFmpeg option in the project settings (so FFmpeg is included into the scr file).

This generally works ... on fast computers.
On slower computers, the video playback is choppy or there are artifacts visible. The CPU usage is stated to be very high by the tech admin who is testing the scr file on some computers.
The very same mp4 video file on the same computers, but played with VLC and Windows Mediaplayer, runs smoothly in fullscreen.
These computers usually have a fullHD display attached (so there is actually no upscaling done) and don't have dedicated GPUs (so it's usually intel graphics only).

Possible solutions?
a) We've read about switching FFmpeg playback from GPU to CPU or the other way around, to try if this works better. But there is no setting for this within screensaver factory, and we can't find a config file for FFmpeg to change either. (also, we are no experts with this, so if there is a way, we'd need some guidance maybe).
b) is there a way to update the FFmpeg library by exchanging files, if this is something that could bring improvements? (the used libaries are from 2013, maybe a newer version of FFmpeg could solve something?)
c) Is there anything else we could try / change / optimize to make the video run more smoothly and with less CPU load?

Thanks for your help
Steve
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Re: Videoplayback performance / optimizations?

Postby Aivars » Tue May 15, 2018 10:28 am

Unfortunately there are no settings to tweak this. Maybe another video screensaver with lower resolution could be used for slower computers?
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Aivars
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