Hello everybody, Unfortunately my problem could not be solved in the German forum, so I’ll try again here…
my Plex Server runs on Windows 10, Ryzen 16Core, 2070ti, 32GB Ram. I decided to activate thumbnails. Yesterday he also created the thumbnails all night, but now he doesn’t continue, and by no means all have been created. Settings are made both in the individual media libraries and in the general settings. I have also temporarily set the maintenance period to 23 hours. What else can i do? Plex version is up to date. if I delete the thumbnails in a media library, they are created again, but suddenly it stops again even though 600 films have not yet been edited. I currently have almost 100GB free space in the Plex directory.
All movies are in mkv container, with codec in h265
A wild guess on my part, but do those files have a ctts atom?
I started the link at that post due to it being the point at which the problem with all those files was found. Your mention of all the problem files being 265 - and I had to re-acquire and repair about 1400 of them ultimately made me think of that.
It wouldn’t take much to make me believe Plex wouldn’t generate a VPT for a file without a ctts atom.
Check a few things, confirm or rule out, then disregard if necessary.
It was worth a shot.
As a test - remux one of the problem files with V45 (or the latest) of MKVToolNix - then see if Plex can generate some VPTs for it.
I still have some of those problem files. Plex can extract VPTs from the ones I have.
I agree that files with that issue need to be remuxed for reliable playback, and remuxing is almost never harmful. I second the suggestion to try remuxing with modern MKVToolNix.
@Matt91, can you tell if there are specific files that won’t generate previews? There are other encoding-related reasons why VPT generation can fail, too.
You could create a test library and add a few problematic files to it, and then share the server logs here.
My next suggestion - after a remux test - would be to Plex Dance a few ‘misbehavers’ to see what that does. It also wouldn’t take much for me to believe Plex has a few locked up in some kind of hellish limbo a Plex Dance would cure…:
Making a test library would do the same thing - either/or to find out what happens.
I think I have all those fixed - then I find another one.
I can’t recall what happened during the VPT gen phase - I had my head down for a few weeks on ‘The Fix’ - or in my case - ‘The Re-Acquire Then Fix’. It was a dark time.
Unfortunately, I don’t know whether it stops at a certain file … I don’t really have that feeling. for example, i added new movies yesterday and no thumbnails were created there either. I just said h265 files in mkv. everything that is in h264 is converted with handbrake before it is added. so did yesterday’s films. and in the series folder, for example, thousands of files of this type are created by handbrake, where thumbnails have already been generated. what is ctts atom? that doesn’t mean anything to me. I took all the films from A-C and D-F out of the films folder for testing purposes and then clicked analyze in the films library. the only thing that happens is that the removed films are shown as “not available”. No thumbnails were created. But I am sure that there are no thumbnails for “G”. if a-f were a problem file, plex would have had to skip this in this test, right?
