Tdarr has many usages revolving around transcoding. I use it for space optimization mainly but you can build your own workflow/pipeline to only do integrity checks… I’m not sure it is relevant to your specific issue but you could try the handbrake/ffmpeg health checks commands outside of Tdarr first on a file you know has the problem and if it works, automate the thing through Tdarr to do the same check on the entire folder/library. This would only help you in flagging them. I’m not sure about repairing though and usually I would look for a new version in case of issues. The question on the transcoding behavior is complex to answer as it depends on hardware on both server and client but you could run Tdarr without changing anything on this side. Please do go through the Tdarr documentation before actually running it across your entire library. My concern is that on my library none came back with a failed health check while a few do fail during transcode to x265 so again I don’t know if that will work for you.
Fribbtastic has an excellent answer:
https://lemmy.world/comment/11608364