Why is it converting MKV to MP4? Haven't had this issue before. (2020 i3 MacBook Air) : r/PleX
Is this transcoding normal? Why is PLEX converting a MP4 to MKV and using OPUS Audio format when playing remotely to an iPhone? I thought iPhone could play MP4 natively? : r/PleX
How to play MKV / MP4 files on Plex Media Player? – VIP Video Converter
Get Plex to recognize all MP4 files
What if Plex Server Doen't Find/Recognize some MP4 files?
Plex On Chromecast Transcoding MP4 AAC instead of direct play? : r/PleX
Investigate Media Information and Formats | Plex Support
Proven Working] Best Video Format for Plex Streaming Without Transcoding