how is your shield set up?
is it plugged into a receiver or soundbar, or the tv directly?
is passthrough enabled in both the shield system settings, and in the plex app settings?
what tv is it ? are you using an hdmi 2.0 or newer cable?
this log snippit indicates that the player cannot direct play for some reason
Oct 12, 2021 22:17:30.423 [14260] DEBUG - [Transcode] MDE: Selected protocol hls; container: mpegts
Oct 12, 2021 22:17:30.423 [14260] DEBUG - [Transcode] MDE: analyzing media item 1917
Oct 12, 2021 22:17:30.423 [14260] DEBUG - [Transcode] MDE: E3 - My Million Dollar Mistake: Direct Play is disabled
Oct 12, 2021 22:17:30.423 [14260] DEBUG - [Transcode] MDE: E3 - My Million Dollar Mistake: media must be transcoded in order to use the hls protocol
Oct 12, 2021 22:17:30.423 [14260] DEBUG - [Transcode] MDE: E3 - My Million Dollar Mistake: no direct play video profile exists for http/mkv/h264
Oct 12, 2021 22:17:30.423 [14260] DEBUG - [Transcode] MDE: E3 - My Million Dollar Mistake: no direct play video profile exists for http/mkv/h264/eac3
Oct 12, 2021 22:17:30.423 [14260] DEBUG - [Transcode] MDE: E3 - My Million Dollar Mistake: Direct Streaming is disabled, so video stream will be transcoded
Oct 12, 2021 22:17:30.423 [14260] DEBUG - [Transcode] MDE: E3 - My Million Dollar Mistake: no remuxable profile found, so video stream will be transcoded
Oct 12, 2021 22:17:30.423 [14260] DEBUG - [Transcode] MDE: Cannot direct stream video stream due to profile or setting limitations
this one seems to indicate the server cpu not powerful enough to transcode
ct 12, 2021 22:17:30.456 [14260] DEBUG - [Transcode] MDE: Cannot direct stream audio stream due to profile or setting limitations
Oct 12, 2021 22:17:30.456 [14260] DEBUG - [Transcode] MDE: Survivor - S41 E3 - My Million Dollar Mistake: selected media 0 / 1917
Oct 12, 2021 22:17:30.457 [14260] DEBUG - [Transcode] Streaming Resource: Reached Decision id=1269 codes=(General=2000,Neither direct play nor conversion is available. Direct Play=3000,App cannot direct play this item. Direct play is disabled. Transcode=4002,Not enough CPU for conversion of this item.)
what cpu/gpu of the server? I assume it is on windows from some of the logs
additional questions; do you have subtitles enabled for this video? double check and disable/set to none any subtitles and see if the video will play.
is the problem with all videos or just this one/certain ones?