Display caption on failed thumbnail

[hulkbulgur]

I have just moved to ente from Google Photos and uploaded my entire media library. Most of this has worked very smoothly, but a fair amount of my video clips suffer from "Failed thumbnail" issues. It would be great to get that fixed obviously, but I guess there will always be cases where a thumbnail cannot be created, and for those cases it would be very helpful if the caption could be displayed on top of the generic video clip thumbnail. The way it is now, it is very annoying to try to find a specific video clip, especially since they are not streaming and some take a long time to download.

I'm trying to organise a fair amount of large video clips where this happened, and it is a tedious task when the album view looks like this:

So - an easy solution would just be to overlay the caption on top of the thumbnail. It could even be an option to do so even if the thumbnail succeeded, since the thumbnails for videos aren't always descriptive of the video's content.

[mnvr]

The thumbnail generation issue for videos in 1.7.9 has been fixed, we'll be releasing a new version 1.7.10 with the fix soon (Context and a workaround meanwhile is described in #5138)