Video Preview Thumbnail Extraction not working in 4.9.1.90 - Docker

[rdunsirn 2]

• Describe the problem in your own words, including what you're trying to accomplish, and where you're getting stuck. Please mention some specific examples.
  • I am trying to perform the video preview thumbnail extraction in 4.9.1.90.  I am running the Docker version of Emby Server on a Ubuntu Linux box.
    
    Here is my docker-compose file:

    services:
      embyserver:
        image: emby/embyserver:latest
        container_name: embyserver
        volumes:
          - /home/emby/docker_emby_linuxserver:/config
          - /home/emby/Television:/mnt/television_default
          - /home/emby/Television2:/mnt/television1
          - /home/emby/Movies:/mnt/movies
          - /home/emby/Movies2:/mnt/movies2
          - /home/emby/camera_backup:/mnt/camera_backup
          - /home/emby/camera_backup_old:/mnt/camera_backup_old
          - /home/emby/photo:/mnt/photo
          - /home/emby/audiobooks:/mnt/audiobooks
          - /home/emby:/home/emby
        ports:
          - 8096:8096
          - 8920:8920
        environment:
          - UID=1001
          - GID=1001
          - GIDLIST=44,993
        devices:
          - /dev/dri:/dev/dri
        restart: on-failure

• In your description, be very specific about the steps you took and what happened with the system.  Describe it like you are talking to a blind person - because you are. We cannot see what you did or what happened so be as specific as possible.
  • I am seeing a lot of these errors in the embyserver.txt logs:

    2025-11-19 15:23:26.220 Error QuickImageSeriesExtractor: QuickImageSeriesExtractor.RunExtraction [C9249D20B393]: Error running quick-extract-imageseries -f mpegts -threads 1 -skip_interval 10 -i fi
    le:"/mnt/television1/Modern Family/Season 5/Modern Family S05E19 A Hard Jay's Night.ts" -an -sn -vf "scale=w=320:h=180" -f image2 -b:v 100M "/config/cache/temp/5d7d095c551c436eb7f4632b4ecc301d/img_
    %05d.jpg"
            *** Error Report ***
            Version: 4.9.1.90
            Command line: /system/EmbyServer.dll -programdata /config -ffdetect /bin/ffdetect -ffmpeg /bin/ffmpeg -ffprobe /bin/ffprobe -restartexitcode 3
            Operating system: Linux version 6.8.0-87-generic (buildd@lcy02-amd64-034) (x86_64-linux-gnu-gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0, GNU ld (GNU Binutils for Ubunt
            OS/Process: x64/x64
            Framework: .NET 8.0.11
            Runtime: system/System.Private.CoreLib.dll
            Processor count: 8
            Data path: /config
            Application path: /system
            System.Exception: System.Exception: Error running ffmpeg quick-extract-imageseries for /mnt/television1/Modern Family/Season 5/Modern Family S05E19 A Hard Jay's Night.ts - Command: -f mpegt
    s -threads 1 -skip_interval 10 -i file:"/mnt/television1/Modern Family/Season 5/Modern Family S05E19 A Hard Jay's Night.ts" -an -sn -vf "scale=w=320:h=180" -f image2 -b:v 100M "/config/cache/temp/5
    d7d095c551c436eb7f4632b4ecc301d/img_%05d.jpg"
               at Emby.Server.MediaEncoding.ImageExtraction.ImageExtractorBase.RunExtraction(String inputPath, IDictionary`2 requestHeaders, Nullable`1 container, MediaStream videoStream, Nullable`1 pr
    otocol, Nullable`1 streamIndex, Nullable`1 threedFormat, Nullable`1 startOffset, Nullable`1 interval, String targetDirectory, String targetFilename, Nullable`1 maxWidth, Boolean enableThumbnailFilt
    er, CancellationToken cancellationToken)
            Source: Emby.Server.MediaEncoding
            TargetSite: Void MoveNext()
    
    2025-11-19 15:23:26.220 Error QuickImageSeriesExtractor: ProcessRun 'quick-extract-imageseries' Error Output:
            ffmpeg version 5.1-emby_2023_06_25_p4 Copyright (c) 2000-2022 the FFmpeg developers and softworkz for Emby LLC
              built with gcc 10.3.0 (crosstool-NG 1.25.0)
            Execution Date: 2025-11-19 14:53:26
            [mpeg2video @ 0x12961a80] Invalid frame dimensions 0x0.
                Last message repeated 24 times
            [mpegts @ 0x12941740] PES packet size mismatch
            [mpegts @ 0x12941740] Packet corrupt (stream = 1, dts = 4004186188).
            Input #0, mpegts, from 'file:/mnt/television1/Modern Family/Season 5/Modern Family S05E19 A Hard Jay's Night.ts':
              Duration: 00:34:58.46, start: 42393.197644, bitrate: 7816 kb/s
              Program 3
              Stream #0:0[0x31]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, progressive), 1280x720 [SAR 1:1 DAR 16:9], Closed Captions, Level 4, 59.94 fps, 59.94 tbr, 90k tbn, Start-Time 42393.591s
                Side data:
                  cpb: bitrate max/min/avg: 11716800/0/0 buffer size: 7995392 vbv_delay: N/A
              Stream #0:1[0x34](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 384 kb/s, Start-Time 42393.198s
            Stream mapping:
              Stream #0:0 -> #0:0 (mpeg2video (native) -> mjpeg (native))
            Press [q] to stop, [?] for help
     [swscaler @ 0x12c10080] [swscaler @ 0x12a3cc40] deprecated pixel format used, make sure you did set range correctly
            [swscaler @ 0x12c10080] [swscaler @ 0x12bd2d40] deprecated pixel format used, make sure you did set range correctly
            [swscaler @ 0x12c10080] [swscaler @ 0x12c20d80] deprecated pixel format used, make sure you did set range correctly
            [swscaler @ 0x12c10080] [swscaler @ 0x12d4b400] deprecated pixel format used, make sure you did set range correctly
            [swscaler @ 0x12c10080] [swscaler @ 0x12d7c880] deprecated pixel format used, make sure you did set range correctly
            [swscaler @ 0x12c10080] [swscaler @ 0x12c34980] deprecated pixel format used, make sure you did set range correctly
            [swscaler @ 0x12c10080] [swscaler @ 0x12a63840] deprecated pixel format used, make sure you did set range correctly
            [swscaler @ 0x12c10080] [swscaler @ 0x12d22280] deprecated pixel for
    2025-11-19 15:23:32.865 Error ChapterImagesTask: Error creating thumbnails for /mnt/television1/Modern Family/Season 5/Modern Family S05E19 A Hard Jay's Night.ts
            *** Error Report ***
            Version: 4.9.1.90
            Command line: /system/EmbyServer.dll -programdata /config -ffdetect /bin/ffdetect -ffmpeg /bin/ffmpeg -ffprobe /bin/ffprobe -restartexitcode 3
            Operating system: Linux version 6.8.0-87-generic (buildd@lcy02-amd64-034) (x86_64-linux-gnu-gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0, GNU ld (GNU Binutils for Ubunt
            OS/Process: x64/x64
            Framework: .NET 8.0.11
            Runtime: system/System.Private.CoreLib.dll
            Processor count: 8
            Data path: /config
            Application path: /system
            System.Exception: System.Exception: Error running ffmpeg quick-extract-imageseries for /mnt/television1/Modern Family/Season 5/Modern Family S05E19 A Hard Jay's Night.ts - Command: -f mpegts -threads 1 -skip_interval 10 -i file:"/mnt/television1/Modern Family/Season 5/Modern Family S05E19 A Hard Jay's Night.ts" -an -sn -vf "scale=w=320:h=180" -f image2 -b:v 100M "/config/cache/temp/5d7d095c551c436eb7f4632b4ecc301d/img_%05d.jpg"
               at Emby.Server.MediaEncoding.ImageExtraction.ImageExtractorBase.RunExtraction(String inputPath, IDictionary`2 requestHeaders, Nullable`1 container, MediaStream videoStream, Nullable`1 protocol, Nullable`1 streamIndex, Nullable`1 threedFormat, Nullable`1 startOffset, Nullable`1 interval, String targetDirectory, String targetFilename, Nullable`1 maxWidth, Boolean enableThumbnailFilter, CancellationToken cancellationToken)
               at Emby.Providers.MediaInfo.ThumbnailGenerator.CreateThumbnailSet(Video item, String inputPath, MediaProtocol protocol, Nullable`1 mediaContainer, IDictionary`2 requestHeaders, MediaStream videoStream, LibraryOptions libraryOptions, Int32 width, CancellationToken cancellationToken)
               at Emby.Providers.MediaInfo.ThumbnailGenerator.CreateThumbnailSets(Video item, String inputPath, MediaProtocol protocol, Nullable`1 mediaContainer, IDictionary`2 requestHeaders, MediaStream videoStream, LibraryOptions libraryOptions, CancellationToken cancellationToken)
               at Emby.Providers.MediaInfo.ThumbnailGenerator.RefreshThumbnailImages(Video item, MediaSourceInfo mediaSource, MediaStream videoStream, LibraryOptions libraryOptions, IDirectoryService directoryService, List`1 chapters, Boolean extractImages, Boolean replaceExistingImages, Boolean saveChapters, CancellationToken cancellationToken)
            Source: Emby.Server.MediaEncoding
            TargetSite: Void MoveNext()

    The process for creating the thumbnails never finishes and eventually times out.  Any new recordings do not have chapter images or thumbnail images for fast-forwarding.

  • I've attached the embyserver.txt and the errors are towards the bottom of the file.  

  • If I go back a version, this does not happen and the thumbnail generation is fine.

embyserver.txt

[Luke 42077]

Hi, we'll take a look at it. Thanks.