@jedi-am Certainly it already works again the thing of the videos, and it continues happening as it happened in the past, that is to say, it is fixed with the later versions, without need to add, ffmpeg of other places, but if it serves to others that option that they use it without problem. In theory having the chromium ffmpeg installed from snap, should go all right, without the need to go to the ffmpeg that have been discussed.
A greeting.
Postadata: Now let's see if the streak is maintained and the next one is not messed up again with the videos.