Thank you; that was super helpful. 
2020-04-30T16:01:00.037 [ WARN ] [NanoRequest] Request to http://127.0.0.1:32700/services/codecs/decoder/msmpeg4v3 completed with error 203 ('Error transferring http://127.0.0.1:32700/services/codecs/decoder/msmpeg4v3 - server replied: Not Found') and status 404.
2020-04-30T16:01:00.037 [ DEBUG ] [CodecFetcher] Finished fetching msmpeg4v3 (status=404)
2020-04-30T16:01:00.037 [ ERROR ] [CodecFetcher] Codec unknown (404)
There’s an issue downloading this codec in particular. We’re tracking a fix for this and hope to knock it out soon.
Let’s consolidate into Plex for Mac (desktop player) - recently fails to playback - #3 by mattseeley.
