Some one on a thread i made pointed me here since I am having the same issues. [True HD audio codec crashes plex] (Thank you @shark2k for pointing me here.) I am not a plex log reading expert by any means but it does look to be the same error. (you can see the error on the other post more) I will include a small section here.
If this dev build is the fix I would love to get in on it as I have run many tests on my memory and all come back clean. Or at least confirm it is not my issue.
EDIT: Running the latest version of PLEX as of writing this ( 1.13.5.5291) on windows server 2012R2
Aug 14, 2018 10:31:55.796 [1396] ERROR - [Transcoder] [truehd_eae @ 0341e2c0] error reading output
Aug 14, 2018 10:31:55.796 [7244] ERROR - [Transcoder] Error while decoding stream #0:1: Cannot allocate memory
Aug 14, 2018 10:31:55.890 [8428] ERROR - [Transcoder] [truehd_eae @ 0341e2c0] error reading output
Aug 14, 2018 10:31:55.890 [8904] ERROR - [Transcoder] Error while decoding stream #0:1: Cannot allocate memory
