Server Version#: 1.26.1.5798 (Running Inside Docker on Ubuntu)
Player Version#: 9.2.0.32520 (Android App)
I have run into a unique issue where Trailers for Library Movies do not play from Apps (Android TV & Android Phone) when locally connected to the Plex Server. This works fine if a web browser is used, or connect to Plex externally. I have tested the latter by disconnecting from the WiFi trailers work for a movie.
Regardless of the above - Trailers played directly from the Discover (Beta) section always work so do not see why this should be different.
I do have Transcoding disabled at the server level. Looks to be a similar issue as this reddit user
May 18, 2022 02:59:43.100 [0x7f9237deeb38] DEBUG - [Transcode] Found session GUID of a810b940de685885-com-plexapp-android in session start.
May 18, 2022 02:59:43.101 [0x7f9237deeb38] DEBUG - [Transcode] TranscodeUniversalRequest: using augmented profile Android
May 18, 2022 02:59:43.101 [0x7f9237deeb38] DEBUG - [Transcode] Downloading document http://127.0.0.1:32400/library/metadata/50659?includeBandwidths=1&offset=-1&X-Plex-Incomplete-Segments=1&X-Plex-Session-Identifier=a810b940de685885-com-plexapp-android
May 18, 2022 02:59:43.116 [0x7f9237deeb38] VERBOSE - [Transcode] It took 0.0 sec to serialize a list with 1 elements.
May 18, 2022 02:59:43.117 [0x7f9237deeb38] DEBUG - [Transcode] MDE: Selected protocol hls; container: mkv
May 18, 2022 02:59:43.117 [0x7f9237deeb38] DEBUG - [Transcode] MDE: analyzing media item <number>
May 18, 2022 02:59:43.117 [0x7f9237deeb38] DEBUG - [Transcode] MDE: <Movie>: Direct Play is disabled
May 18, 2022 02:59:43.117 [0x7f9237deeb38] DEBUG - [Transcode] MDE: <Movie>: media must be transcoded in order to use the hls protocol
May 18, 2022 02:59:43.117 [0x7f9237deeb38] DEBUG - [Transcode] MDE: <Movie>: no direct play video profile exists for mp4/mp4/h264
May 18, 2022 02:59:43.117 [0x7f9237deeb38] DEBUG - [Transcode] MDE: <Movie>: no direct play video profile exists for mp4/mp4/h264/aac
May 18, 2022 02:59:43.117 [0x7f9237deeb38] DEBUG - [Transcode] MDE: <Movie>: selected media 0 / 80625
May 18, 2022 02:59:43.117 [0x7f9237deeb38] DEBUG - [Transcode] Streaming Resource: Required bandwidth unknown (media requires deep analysis) Changing decision parameters provided by client to fit bandwidth limit of 200000kbps
May 18, 2022 02:59:43.117 [0x7f9237deeb38] DEBUG - [Transcode] Streaming Resource: Determining preferred transcode encoders through transcode only decision.
May 18, 2022 02:59:43.119 [0x7f9237deeb38] DEBUG - [Transcode] Streaming Resource: Reducing playback quality for 190476kbps stream bitrate: video resolution to 1920x1040, audio channels to 2, quality to 99, disable video DS as 2147483647kbps is > the 19968kbps available, disable audio DS as 2147483647kbps is > the 256kbps available
May 18, 2022 02:59:43.119 [0x7f9237deeb38] DEBUG - [Transcode] Clipped max bitrate to 19968Kbps based on client-requested limit
May 18, 2022 02:59:43.120 [0x7f9237deeb38] DEBUG - [Transcode] MDE: Selected protocol hls; container: mkv
May 18, 2022 02:59:43.120 [0x7f9237deeb38] DEBUG - [Transcode] MDE: analyzing media item 80625
May 18, 2022 02:59:43.120 [0x7f9237deeb38] DEBUG - [Transcode] MDE: <Movie>: Direct Play is disabled
May 18, 2022 02:59:43.120 [0x7f9237deeb38] DEBUG - [Transcode] MDE: <Movie>: media must be transcoded in order to use the hls protocol
May 18, 2022 02:59:43.120 [0x7f9237deeb38] DEBUG - [Transcode] MDE: <Movie>: no direct play video profile exists for mp4/mp4/h264
May 18, 2022 02:59:43.120 [0x7f9237deeb38] DEBUG - [Transcode] MDE: <Movie>: no direct play video profile exists for mp4/mp4/h264/aac
May 18, 2022 02:59:43.120 [0x7f9237deeb38] DEBUG - [Transcode] MDE: <Movie>: Direct Streaming is disabled, so video stream will be transcoded
May 18, 2022 02:59:43.120 [0x7f9237deeb38] DEBUG - [Transcode] MDE: <Movie>: no remuxable profile found, so video stream will be transcoded
May 18, 2022 02:59:43.120 [0x7f9237deeb38] DEBUG - [Transcode] MDE: Cannot direct stream video stream due to profile or setting limitations
May 18, 2022 02:59:43.120 [0x7f9237deeb38] DEBUG - [Transcode] Clipped max bitrate to 19968Kbps based on client-requested limit
May 18, 2022 02:59:43.120 [0x7f9237deeb38] DEBUG - [Transcode] MDE: <Movie>: Audio Direct Streaming is disabled, so video's audio stream will be transcoded
May 18, 2022 02:59:43.120 [0x7f9237deeb38] DEBUG - [Transcode] MDE: Cannot direct stream audio stream due to profile or setting limitations
May 18, 2022 02:59:43.120 [0x7f9237deeb38] DEBUG - [Transcode] MDE: <Movie>: selected media 0 / 80625
May 18, 2022 02:59:43.121 [0x7f9237deeb38] DEBUG - [Transcode] Streaming Resource: Reached Decision id=50659 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.)
May 18, 2022 02:59:43.121 [0x7f9237deeb38] VERBOSE - It took 0.0 sec to serialize a list with 0 elements.