Playback error conversion failed the transcoder exited due to an error, segmentation violation

Server Version#:v1.32.2.7100-248a2daf0 - Ubuntu PC x86_64 - build: linux-x86_64 debian - GMT 10:00
Player Version#: platform=webOS, platformVersion=7.3.0, device=webOS 7.3.0, model=50UQ9000PSD

Playback of file stops repeatably in the same place in the show. Errors in debug server log are:

Jun 03, 2023 16:31:45.825 [140658911337272] ERROR - [Req#44e9b8] Unable to find client profile
for device; platform=webOS, platformVersion=7.3.0, device=webOS 7.3.0, model=50UQ9000PSD

Jun 03, 2023 16:31:47.897 [140658906073912] DEBUG - [Req#44e9df] [Now] Device is webOS (LG 50UQ9000PSD).
Jun 03, 2023 16:31:47.897 [140658906073912] DEBUG - [Req#44e9df] [Now] Profile is Generic
Jun 03, 2023 16:31:47.897 [140658906073912] DEBUG - [Req#44e9df] [Now] Updated play state for /library/metadata/17410.
Jun 03, 2023 16:31:47.897 [140658906073912] DEBUG - [Req#44e9df] Statistics: (kyc7s95dkre782z45gv2zb6l) Reporting active playback in state 0 of type 4 (scrobble: 0) for account 1
Jun 03, 2023 16:31:47.900 [140659085724472] DEBUG - Completed: [192.168.88.123:41016] 200 GET /:/timeline?key=%2Flibrary%2Fmetadata%2F17410&ratingKey=17410&state=playing&time=1825006&duration=2388928&playbackTime=76&playQueueItemID=953&timeStalled=2&context=source%3Acontent.library (12 live) #44e9df GZIP 6ms 782 bytes (pipelined: 1)
Jun 03, 2023 16:31:47.921 [140659088309048] DEBUG - Jobs: ‘/usr/lib/plexmediaserver/Plex Transcoder’ exit code for process 57303 is -11 (signal: Segmentation fault)
Jun 03, 2023 16:31:47.921 [140658876635960] DEBUG - Notifying consumer that data is complete.
Jun 03, 2023 16:31:47.921 [140658876635960] DEBUG - Streaming Resource: Terminated session 0x7fedbbf292f8:kyc7s95dkre782z45gv2zb6l with reason Conversion failed. The transcoder exited due to an error.
Jun 03, 2023 16:31:47.921 [140658876635960] DEBUG - Killing job.
Jun 03, 2023 16:31:47.921 [140658876635960] DEBUG - Signalling job ID 57303 with 9
Jun 03, 2023 16:31:47.921 [140658876635960] DEBUG - Job was already killed, not killing again.
Jun 03, 2023 16:31:47.921 [140658876635960] DEBUG - Stopping transcode session vn9zu6wsw7na2cqsvxu7rjnz
Jun 03, 2023 16:31:47.924 [140658874526520] DEBUG - Cleaning directory for session vn9zu6wsw7na2cqsvxu7rjnz (/tmp/Transcode/Sessions/plex-transcode-vn9zu6wsw7na2cqsvxu7rjnz-8b5de1ed-a4ad-412b-9e95-f9f108ea6cb2)
Jun 03, 2023 16:31:47.926 [140658876635960] DEBUG - Transcoder: Cleaning old transcode directories.
Jun 03, 2023 16:31:47.926 [140658876635960] DEBUG - Whacked session vn9zu6wsw7na2cqsvxu7rjnz, 0 remaining.
Jun 03, 2023 16:31:47.930 [140658911337272] DEBUG - Request: [192.168.88.179:44554 (Allowed Network (Subnet))] GET /status/sessions (11 live) #44ea16 GZIP Signed-in Token (mert717) (Firefox)
Jun 03, 2023 16:31:47.930 [140658911337272] DEBUG - [Req#44ea16] [Now] Adding 1 sessions.
Jun 03, 2023 16:31:47.931 [140659085724472] DEBUG - Completed: [192.168.88.179:44554] 200 GET /status/sessions (11 live) #44ea16 GZIP 0ms 3143 bytes (pipelined: 7)
Jun 03, 2023 16:31:48.016 [140659083615032] ERROR - [TranscodeOutputStream] Streaming Session 0x7fedbbf292f8 appears to have died from under us
Jun 03, 2023 16:31:48.016 [140659083615032] DEBUG - Removed transcode data consumer, active count 1 => 0
Jun 03, 2023 16:31:48.016 [140658842929976] DEBUG - [TranscodeOutputStream] Input processing thread exited after writing 0 bytes, m_closed=1, m_endOfFileReached=1, session->isStopped()=1
Jun 03, 2023 16:31:48.286 [140659085724472] ERROR - Session 0x7fedbbf292f8 terminated

cleaning bundles and optimizing databse does not fix the problem.

The same media file plays flawlessly using the synology docker app version 1.29.2.6364-7000.
A workaround is to use the ‘optimise for tv’ option. The new media file generated by this function plays ok.

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