I am setting up my media server after a long downtime. My collection of movies (DVD and Bluray) are in ISO format. Currently we have Roku devices of varying models on every television, which are different in functionality as what what was used before.

Transcoding is turned off, as the hardware is stated to support streams of MPEG/VOB and M2TS formats.

I am having issues playing back many titles, which I never had issue with before. The common error ends up being "File Not Playable - The File Might Be Damaged Or Corrupt". This does not happen with every title, but a lot of them. It also happens with both DVD and Bluray ISOs.

How can I debug the failure for the playback of these titles? If I "Enable Diagnostic Logging For Customer Support Analysis", the produced log file is full of so much unrelated information, I can't make use of it. If this is not enabled, the logs that are left, it is unclear where I should be looking.

Thank you