sorry to open a new post but the other is locked. I tried to do what was suggested. I now have video but no sound. During the update I am told:
ffmpeg is needed by (installed) kdenlive-0.9.6-1.mga3.x86_64
but for some reason I cannot download ffmpeg because it is tainted.
I have an old eeepc with Xubuntu and it works well. I expect I shall have to move on to M4 for there are many upgrades I cannot do due to some troubles.
I am just a simple user and don´t have time to spend hours trying to find out what is wrong and how it can be solved