I have a Formuler GTV media player that I use to stream (MKV) video files from my Synology NAS DS218 to my TV.
For streaming, I use Plex Media Server on the NAS and the Plex Player app on the Synology NAS.
Recently, more and more video files aren't playing correctly, especially H.265 and HEVC encoded files.
I have manually updated the Synology NAS to 7.2.2-72806 which automatically upgraded the Plex Media Server to 1.41.9057.
Sadly it has not solved the trouble with certain video files.
What more can I check or do?