Hello everybody,
I am not sure, wheter I am in the right forum here, but I think some of you have a similar problem:
I have about 700 mkv files. Each worked fine once. Some of them are about 6 years old and copied from one HDD to another and finally found their way to my qnap where i have a RAID 5.
The problem I have is, that a lot of files have errors in it. I can watch nearly the full movie, but sometimes plex stopps and i have to skip 5, 10 or 20 seconds to continue the move. This is very annoying and I would like to have a little tool, too check all my mkvs for corruption.
I am hopefully, somone could help me here, because I couldn`t find anything with google (mkvverify by alexander Noe and mkv validiator didn’t found any result)
Thank you very much
You can try tools from this list https://www.videohelp.com/software/sections/video-repair-fix
But you can also try to play some of the “problematic files” with VLC and see if the error shows up. If it doesn’t, then it can be a Plex error (in the client or in the transcoder).
Thank you for your for the fast answering.
I have already tried to play the movies with several other players or directly via USB by the TV. There are always the same frequenzes at a movie which wont work. Some players skip it automatically, others (like Plex) stop and i have to skip manually. I scrolled through the page you advised, but i couldnt find a program which could help me (I think you have recognised that English is not my mother tongue, so it is a bit hard for me to get all the technical descriptions of the progams 
)
I already found a program which could fix the broken MKVs (http://www.mkvrepair.com/)
But I don`t have a tool to find them…
Thank you for your answer, but I am afraid that a lot of my files are defect, because i have already tried a lot of different players.
I already found a programm to repair the files (http://www.mkvrepair.com/) but I couldn`t find a program which marks all the defect files.
