Some torrent downloads, when complete, have a ‘.ink’ file in the root folder. Usually there would be an nfo file and maybe a text or jpeg to accompany the video file.
In any case, when a download has a .ink file in the, the video file won’t play. I am usure if it has anything to do with the .ink file itself, but it’s alway a red-flag that the video file is corrupt/unplayable.
There’s no post-processing involved i.e. I just have it download to one place, then I manually move the download, so that shouldn’t be the issue.
I am using Transmission as the torrent client.
It seems to be a random occurance - not related to any specific file type or torrent site.