IntroDetector: Failed to start a transcode session

Plex Media Server Metadata & Adding Files
1

Server Version#: 1.19.3.2852
Player Version#: N/A
Plex Pass: Yes

After reading this article https://support.plex.tv/articles/skip-content/ I’m trying to use this new feature, but checking my logs I’m getting errors every time my server tries to Analyze the episodes. It worked fine for the first season of Westworld.
I’m able to play these files without any problem. Can anyone help me to understand and solve this problem?

Thank you!

Plex Media Server.3.log:May 24, 2020 13:15:37.673 [0xa792f460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/Euphoria/Euphoria - S01E06 - The Next Episode.mp4
Plex Media Server.3.log:May 24, 2020 13:15:37.720 [0xa792f460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/Euphoria/Euphoria - S01E07 - The Trials and Tribulations of Trying to Pee While Depressed.mp4
Plex Media Server.3.log:May 24, 2020 13:15:37.766 [0xa792f460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/Euphoria/Euphoria - S01E08 - And Salt the Earth Behind You.mp4
Plex Media Server.3.log:May 24, 2020 13:15:37.891 [0xa792f460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E01 - Godflame.mkv
Plex Media Server.3.log:May 24, 2020 13:15:37.938 [0xa792f460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E02 - Message in a Bottle.mkv
Plex Media Server.3.log:May 24, 2020 13:15:37.984 [0xa792f460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E03 - Fresh Blood.mp4
Plex Media Server.3.log:May 24, 2020 13:15:38.084 [0xa792f460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E04 - The River.mkv
Plex Media Server.3.log:May 24, 2020 13:15:38.184 [0xa792f460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E05 - Plastic.mkv
Plex Media Server.3.log:May 24, 2020 13:15:38.277 [0xa792f460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E06 - Silk.mkv
Plex Media Server.3.log:May 24, 2020 13:15:38.371 [0xa792f460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E07 - The Lavender Road.mkv
Plex Media Server.5.log:May 23, 2020 12:03:31.460 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/Euphoria/Euphoria - S01E02 - Stuntin Like My Daddy.mp4
Plex Media Server.5.log:May 23, 2020 12:03:31.519 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/Euphoria/Euphoria - S01E03 - Made You Look.mp4
Plex Media Server.5.log:May 23, 2020 12:03:31.566 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/Euphoria/Euphoria - S01E04 - Shook One Pt. II.mp4
Plex Media Server.5.log:May 23, 2020 12:03:31.612 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/Euphoria/Euphoria - S01E05 - 03 Bonnie and Clyde.mp4
Plex Media Server.5.log:May 23, 2020 12:03:31.660 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/Euphoria/Euphoria - S01E06 - The Next Episode.mp4
Plex Media Server.5.log:May 23, 2020 12:03:31.706 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/Euphoria/Euphoria - S01E07 - The Trials and Tribulations of Trying to Pee While Depressed.mp4
Plex Media Server.5.log:May 23, 2020 12:03:31.752 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/Euphoria/Euphoria - S01E08 - And Salt the Earth Behind You.mp4
Plex Media Server.5.log:May 23, 2020 12:03:31.847 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E01 - Godflame.mkv
Plex Media Server.5.log:May 23, 2020 12:03:31.896 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E02 - Message in a Bottle.mkv
Plex Media Server.5.log:May 23, 2020 12:03:31.943 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E03 - Fresh Blood.mp4
Plex Media Server.5.log:May 23, 2020 12:03:32.043 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E04 - The River.mkv
Plex Media Server.5.log:May 23, 2020 12:03:32.140 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E05 - Plastic.mkv
Plex Media Server.5.log:May 23, 2020 12:03:32.235 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E06 - Silk.mkv
Plex Media Server.5.log:May 23, 2020 12:03:32.337 [0xaac67460] ERROR - IntroDetector: Failed to start a transcode session: /shares/TVShows/See/See - S01E07 - The Lavender Road.mkv
2

You probably have checked Settings > [Server Name] > Transcoder > Disable video stream transcoding. From what I understand Plex currently uses the same mechanism for intro detection – so with video stream transcoding disabled, you get no intro detection.

Not sure if this is a “for now” kind of situation or the long-term expected behavior.

3

Hey Tom, thanks for answering. Actually it wasn’t but just to make sure I enabled and disabled it again.

Right after manually start the analyzes, I get this message:

Plex Media Scanner Analysis.log:May 26, 2020 18:43:05.219 [0xb4337460] INFO -mnt/HD/HD_a2/Nas_Prog/plexmediaserver/binaries/Plex Media Scanner --analyze --server-action intro --item 4797 --log-file-suffix  Analysis

Is there any message I should look for that tells me Plex succeed ?

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