Terje,

Yes, this would be even easier, but I couldn't get it to work so far:

I could change the AppImage Properties icon to the "pixmap/cinx.svg" icon,
but although I use my desktop local language I couldn't see the fields equivalent to

3. Application Tab

or the field to enter the

4. Command:

/path/to/appimage/./CinGG-yyyymmdd.AppImage

Is this procedure for Gnome or for another desktop environment?

Not sure. Andrea used this on Arch, so maybe he can respond tomorrow.

Possibly also a second DE integration could be added (later) if found useful:
/usr/share/applications/cingg.desktop
working like this
Right-click a video file type in the file browser and select from the context menu:
Open with -> CinGG

And lastly at the same time:
Is the special version with 10bit color support (cinelerra10bit) gone?

Eventually I hope to create an AppIMage with the 10bit color support but I have to figure out how it was done -- it is probably easy for me to do, but unless there is a high priority, I probably will not get it done for awhile.