Celluloid I found, is based on MPV, thus I found relevant HW acceleration options on MPV help. I read `nvdec` and `nvdec-copy` options both seem relevant, but it actually can auto-detect the `nvdec-copy` when in Celluloid GUI preferences you put this line:
hwdec=auto-safe
* * *
![Celluloid hwdec=auto-safe](
* * *
After this adjustment, my CPU cooler fan got a lot easier on ears, as proven by CPU usage:
![CPU usage with Nvidia HW acceleration turned on](
* * *
Credits:
_Hardware Video Acceleration_ section of Linux Mint official blog article.
* * *
**Check for HW acceleration from inside the Celluloid player:**
You can press `i` while playing to confirm what acceleration got enabled if any.