[Cin] Where are Cingg's ffmpeg compression files located?

[Terje J. Hanssen]

During render testing to and fro, I have had a suspect that now and then 
the content of ffmpeg compression type has changed or could not be 
picked up again.
But I have thought it was me that had confused or forgot something. Or 
may this occur by other reasons?

Seemingly this happened recently during render switching between 
hevc_vaapi,mp4 and hevc_qsv.mp4 .
hevc_qsv.mp4 has several more pixel options than hevc_vaapi.mp4 which 
has only the single "vaapi" option.
And in one occasion I got more pixel options for hevc_vaapi.mp4(?) - or 
was it still on hevc_qsv,mp4?

So to find out, I have tried to edit the hevc_vaapi.mp4 file, but have 
not got the edited content loaded in the video wrench compression window.
So I wonder where is the preset file used by Cingg located?

I have

# ls -l /Cin
lrwxrwxrwx 1 root root 29 Oct 22 20:23 /Cin -> /home/cinelerra/cinelerra-5.1

and the hevc_vaapi.mp4 preset file with the same content located in both

/Cin/bin/ffmpeg/video
/Cin/ffmpeg/video

But the edited content isn't visible in Cingg?