Lets capture some diagnostics and also channel streaming capture for the time when you can reproduce the problem.
So first ensure server debug logging is not disabled - see https://support.plex.tv/articles/201643703-reporting-issues-with-plex-media-server/
Let me know Zip code / Lineup Name / Channel Name / Channel Number
Get screenshot of your plex.tv account language audio / subtitles selection setting: Account Settings → Settings → AUDIO & SUBTITLE SETTINGS
Screenshot
Then click Edit and scroll down and capture all fields in a screenshot
When you are ready to reproduce the problem, please add the following server settings
Regedit and navigate to
HKEY_CURRENT_USER\SOFTWARE\Plex, Inc.\Plex Media Server
Right Click on Plex Media Server and select
New → DWORD (32-bit) Value
to create the following 4 settings
TranscoderPersistSessionDirs Set the value to 1
TranscoderInputTracing Set the value to 1
TranscoderPruneBuffer Set the value to 0
TranscoderLivePruneBuffer Set the value to 0
These will add DVR channel stream capture plus will ensure that the temp files used for the streaming by the transcoder are not purged
The files will be in the transcoder temp directory which by default would be
C:\Users\xxxxx\AppData\Local\Plex Media Server\Cache\Transcode\Sessions
When you reproduce the problem, note down the channel number, channel name, time of start of live tv streaming for that channel and time when the issue arose. Add screenshot of when the issue arises and note the time when it happened
Then get the server logs and also copy out all the transcoder temp directory files under the Transcode\Sessions directory and zip them and upload to dropbox or google drive and share a link
At end of test - delete the 4 registry edit settings (or invert the values changing 1 to 0 and 0 to 1 to disable)
