thumbnails issues

[Dra]

Trickplay not working on Synology (Jellyfin 10.10.7 + ffmpeg7) – can't create from 0 images


I’ve been running Jellyfin 10.10.7 on a Synology NAS (DSM 7.2) DS216+II , using the official ffmpeg7 package, and I keep hitting a wall when trying to generate trickplay thumbnails. The HW decoding and accelerated Mjpeg Encoding are enabled for Trickplay. Every time the process runs — either automatically or manually triggered — it fails with this error:

\"fps=0.10000000149011612,setparams=color_primaries=bt709:color_trc=bt709:colorspace=bt709,scale_vaapi=w=320:h=180:format=nv12ut_range=pc:mode=hq:extra_hw_frames=24,hwmap=derive_device=qsv,format=qsv\" -threads 1 -c:v mjpeg_qsv -global_quality:v 91 -fps_mode passthrough -f image2 \"/tmp/jellyfin/1d52a6ace4fd42a38f4affe8d405cda6/%08d.jpg\""
[2025-04-15 03:00:04.146 +03:00] [ERR] [68] Jellyfin.Server.Implementations.Trickplay.TrickplayManager: Error creating trickplay images.
System.ArgumentException: Can't create trickplay from 0 images.
  at Jellyfin.Server.Implementations.Trickplay.TrickplayManager.CreateTiles(IReadOnlyList`1 images, Int32 width, TrickplayOptions options, String outputDir)
  at Jellyfin.Server.Implementations.Trickplay.TrickplayManager.RefreshTrickplayDataInternal(Video video, Boolean replace, Int32 width, TrickplayOptions options, LibraryOptions libraryOptions, CancellationToken cancellationToken)
[2025-04-15 03:00:04.152 +03:00] [INF] [68] Jellyfin.Server.Implementations.Trickplay.TrickplayManager: Creating trickplay files at 320 width, for "/volume1/video/Movies/Bluey (201 Season 3 S03 (1080p DSNP WEB-DL x265 HEVC 10bit EAC3 5.1 Garshasp)/Bluey (201 - S03E43 - Dragon (1080p DSNP WEB-DL x265 Garshasp).mkv" [ID: 3177dbb5-4494-bfb9-efe3-65dd0353fb36]
[2025-04-15 03:00:04.152 +03:00] [INF] [68] MediaBrowser.MediaEncoding.Encoder.MediaEncoder: Trickplay generation: "/var/packages/ffmpeg7/target/bin/ffmpeg -loglevel error -skip_frame nokey -init_hw_device vaapi=va:,vendor_id=0x8086,driver=iHD -init_hw_device qsv=qs@va -filter_hw_device qs -hwaccel vaapi -hwaccel_output_format vaapi -noautorotate -i file:\"/volume1/video/Movies/Bluey (201 Season 3 S03 (1080p DSNP WEB-DL x265 HEVC 10bit EAC3 5.1 Garshasp)/Bluey (201 - S03E43 - Dragon (1080p DSNP WEB-DL x265 Garshasp).mkv\" -noautoscale -an -sn -vf

Do you have any ideea of this issue?

Thank you!

[TheDreadPirate]

Did you also check the box for generating images on key frames in the trickplay settings? I'm wondering if it is timing out.

[Dra]

Yes, the "Only generate images from key frames" is selected.

Thank you!

[TheDreadPirate]

Can you share your full Jellyfin log? I want to check if ANY of the trickplays are generating.