Post Processing DVR shows is losing metadata

[finicky6457]

I'm using Jellyfin to DVR shows which are saved in the "Recordings" library. I'm using the post processing feature to run a script that reencodes the .ts files to .mkv containers and then runs comskip to form a new video file. The script outputs the files to a new directory in the same structure (Show name, season, etc). The problem is that the conversion is losing some of the metadata like Season, Episode, and Description. I've tried copying the .nfo files from the Recordings directory to the new processed directory but the metadata is still lost. Any ideas on how to get the metadata to load or to change my process for recording/converting shows?

[TheDreadPirate]

What are you using to convert TS to MKV? ffmpeg?

[finicky6457]

ffmpeg... i even tried adding "-movflags use_metadata_tags" but didn't do anything... the new files are formated like: original_filename.ts.mkv and the nfo filenames are original_filename.nfo. i even tried original_filename.ts.nfo.