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abelthorne

Member

Registered: 2020-03-02

Posts: 25

Getting attachement thumbnails from Matroska (MKV) files with tumbler?

Hello,
I have Matroska (MVK) video files that have embedded/attached images as cover.jpg. I'd like tumbler to use these as the thumbnail instead of creating a regular one from the video.

I'm currently using Xubuntu 24.04 and this used to work on an older version but it has stopped working at some point and I'm not sure why.

Here is the video part my tumbler.rc:

[CoverThumbnailer]
Disabled=true
Priority=3
Locations=~/movies
MaxFileSize=0
#APIKey=your-api-key-from-themoviedb.org

# ffmpegthumbnailer plugin
[FfmpegThumbnailer]
Disabled=false
Priority=1
Locations=
MaxFileSize=0

# GStreamer plugin
[GstThumbnailer]
Disabled=false
Priority=2
Locations=
MaxFileSize=0

From what I've found doing a search, this should work using the GStreamer plugin, that's why I've put at priority 2. Yet, it doesn't work, I get a thumbnail generated from a frame of the video. Disabling both the Ffmpeg and the GStreamer thumbnailers still generates thumbnails (I delete the content of ~/.cache/thumbnails and ~/.thumbnails for the tests), so I'm not sure exactly what creates them.

ToZ

Administrator

From: Canada

Registered: 2011-06-02

Posts: 12,012

Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

so I'm not sure exactly what creates them.

If you run tumblerd in debug mode, you'll see which thumbnailer is processing the video files.

However, to get covers, you should probably enable the cover thumbnailer. I don't have any video files with covers embedded to test this though.

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abelthorne

Member

Registered: 2020-03-02

Posts: 25

Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

I'm a bit confused about running tumbler in debug mode: do I have to install something specific? When I simply run the command listed on the page, I get the following:

bash: /tumbler-1/tumblerd: Aucun fichier ou dossier de ce nom

(in english, "no such file or directory")
My tumbler version is 4.18.1-1.1build4. I'm not sure what the pkg-config part is supposed to return, running it by itself outputs nothing.

As for the cover thumbnailer, the thumbnail generation worked in the past without it and I don't really want to download the covers on the fly, I already have them in the files.

EDIT: ok, I figured it out, pkg-config is just supposed to find the path to tumbler-1. On my system, it seems to be the following:

G_MESSAGES_PREFIXED= G_MESSAGES_DEBUG=all /usr/lib/x86_64-linux-gnu/tumbler-1/tumblerd

So, if I run it, I get the following output when accessing a dir with a MKV file that has an embedded cover:

GLib-GIO-DEBUG: 00:16:22.117: Using cross-namespace EXTERNAL authentication (this will deadlock if server is GDBus < 2.73.3)
tumbler-ffmpeg-thumbnailer-DEBUG: 00:16:22.197: Initializing the Tumbler ffmpeg video thumbnailer plugin
tumbler-odf-thumbnailer-DEBUG: 00:16:22.197: Initializing the Tumbler ODF Thumbnailer plugin
tumbler-gepub-thumbnailer-DEBUG: 00:16:22.252: Initializing the Tumbler Gepub Thumbnailer plugin
tumbler-font-thumbnailer-DEBUG: 00:16:22.252: Initializing the Tumbler Font Thumbnailer plugin
tumbler-jpeg-thumbnailer-DEBUG: 00:16:22.252: Initializing the Tumbler JPEG Thumbnailer plugin
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.253: Initializing the Tumbler Desktop Thumbnailer plugin
tumbler-gst-thumbnailer-DEBUG: 00:16:22.253: Initializing the Tumbler GStreamer Thumbnailer plugin
tumbler-raw-thumbnailer-DEBUG: 00:16:22.253: Initializing the Tumbler RAW Thumbnailer plugin
tumbler-cover-thumbnailer-DEBUG: 00:16:22.254: Initializing the Tumbler Cover Thumbnailer plugin
tumbler-pixbuf-thumbnailer-DEBUG: 00:16:22.254: Initializing the Tumbler Pixbuf Thumbnailer plugin
tumbler-poppler-thumbnailer-DEBUG: 00:16:22.258: Initializing the Tumbler Poppler PDF/PS Thumbnailer plugin
tumbler-DEBUG: 00:16:22.258: Thumbnailer "CoverThumbnailer" disabled in config file
tumbler-cover-thumbnailer-DEBUG: 00:16:22.258: Shutting down the Tumbler Cover Thumbnailer plugin
GLib-GIO-DEBUG: 00:16:22.261: _g_io_module_get_default: Found default implementation gvfs (GDaemonVfs) for ‘gio-vfs’
tumbler-poppler-thumbnailer-DEBUG: 00:16:22.261: Supported URI schemes:
  file
  admin
  davs+sd
  dav+sd
  ftpis
  mtp
  onedrive
  afc
  ftp
  burn
  afp
  google-drive
  davs
  dav
  smb
  dns-sd
  nfs
  gphoto2
  archive
  sftp
  ssh
  recent
  trash
  wsdd
  ftps
  resource
tumbler-poppler-thumbnailer-DEBUG: 00:16:22.261: Supported mime types:
  application/pdf
  application/postscript
tumbler-pixbuf-thumbnailer-DEBUG: 00:16:22.261: Supported URI schemes:
  file
  admin
  davs+sd
  dav+sd
  ftpis
  mtp
  onedrive
  afc
  ftp
  burn
  afp
  google-drive
  davs
  dav
  smb
  dns-sd
  nfs
  gphoto2
  archive
  sftp
  ssh
  recent
  trash
  wsdd
  ftps
  resource
tumbler-pixbuf-thumbnailer-DEBUG: 00:16:22.261: Supported mime types:
  image/x-win-bitmap
  image/x-bmp
  image/x-ico
  image/tiff
  image/png
  image/x-xpixmap
  image/icon
  image/x-MS-bmp
  image/x-xbitmap
  image/gif
  text/ico
  image/svg
  image/svg+xml-compressed
  image/qtif
  image/vnd.microsoft.icon
  image/x-portable-graymap
  image/x-icon
  image/x-icns
  image/x-portable-anymap
  text/xml-svg
  image/vnd.adobe.svg+xml
  image/x-tga
  image/x-portable-pixmap
  image/jpeg
  application/ico
  image/bmp
  application/x-navi-animation
  image/svg+xml
  image/ico
  image/x-portable-bitmap
  image/x-quicktime
  image/svg-xml
  image/x-wmf
tumbler-raw-thumbnailer-DEBUG: 00:16:22.262: Supported URI schemes:
  file
tumbler-raw-thumbnailer-DEBUG: 00:16:22.262: Supported mime types:
  image/x-adobe-dng
  image/x-canon-cr2
  image/x-canon-crw
  image/x-epson-erf
  image/x-nikon-nef
  image/x-nikon-nrw
  image/x-olympus-orf
  image/x-panasonic-raw
  image/x-panasonic-rw2
  image/x-pentax-pef
  image/x-sony-arw
  image/x-minolta-mrw
  image/x-fuji-raf
tumbler-gst-thumbnailer-DEBUG: 00:16:22.276: Supported URI schemes:
  file
  admin
  davs+sd
  dav+sd
  ftpis
  mtp
  onedrive
  afc
  ftp
  burn
  afp
  google-drive
  davs
  dav
  smb
  dns-sd
  nfs
  gphoto2
  archive
  sftp
  ssh
  recent
  trash
  wsdd
  ftps
  resource
tumbler-gst-thumbnailer-DEBUG: 00:16:22.276: Supported mime types:
  application/mxf
  application/ogg
  application/ram
  application/sdp
  application/smil
  application/smil+xml
  application/vnd.apple.mpegurl
  application/vnd.ms-wpl
  application/vnd.rn-realmedia
  application/x-extension-m4a
  application/x-extension-mp4
  application/x-flac
  application/x-flash-video
  application/x-matroska
  application/x-netshow-channel
  application/x-ogg
  application/x-quicktime-media-link
  application/x-quicktimeplayer
  application/x-shorten
  application/x-smil
  application/xspf+xml
  audio/3gpp
  audio/ac3
  audio/AMR
  audio/AMR-WB
  audio/basic
  audio/flac
  audio/midi
  audio/mp2
  audio/mp4
  audio/mpeg
  audio/mpegurl
  audio/ogg
  audio/prs.sid
  audio/vnd.rn-realaudio
  audio/x-aiff
  audio/x-ape
  audio/x-flac
  audio/x-gsm
  audio/x-it
  audio/x-m4a
  audio/x-matroska
  audio/x-mod
  audio/x-mp3
  audio/x-mpeg
  audio/x-mpegurl
  audio/x-ms-asf
  audio/x-ms-asx
  audio/x-ms-wax
  audio/x-ms-wma
  audio/x-musepack
  audio/x-pn-aiff
  audio/x-pn-au
  audio/x-pn-realaudio
  audio/x-pn-realaudio-plugin
  audio/x-pn-wav
  audio/x-pn-windows-acm
  audio/x-realaudio
  audio/x-real-audio
  audio/x-s3m
  audio/x-sbc
  audio/x-scpls
  audio/x-speex
  audio/x-stm
  audio/x-tta
  audio/x-wav
  audio/x-wavpack
  audio/x-vorbis
  audio/x-vorbis+ogg
  audio/x-xm
  image/vnd.rn-realpix
  image/x-pict
  misc/ultravox
  text/google-video-pointer
  text/x-google-video-pointer
  video/3gp
  video/3gpp
  video/dv
  video/divx
  video/fli
  video/flv
  video/mp2t
  video/mp4
  video/mp4v-es
  video/mpeg
  video/msvideo
  video/ogg
  video/quicktime
  video/vivo
  video/vnd.divx
  video/vnd.mpegurl
  video/vnd.rn-realvideo
  video/vnd.vivo
  video/webm
  video/x-anim
  video/x-avi
  video/x-flc
  video/x-fli
  video/x-flic
  video/x-flv
  video/x-m4v
  video/x-matroska
  video/x-mpeg
  video/x-mpeg2
  video/x-ms-asf
  video/x-ms-asx
  video/x-msvideo
  video/x-ms-wm
  video/x-ms-wmv
  video/x-ms-wmx
  video/x-ms-wvx
  video/x-nsv
  video/x-ogm+ogg
  video/x-theora+ogg
  video/x-totem-stream
  x-content/video-dvd
  x-content/video-vcd
  x-content/video-svcd
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.277: Supported URI schemes:
  file
  admin
  davs+sd
  dav+sd
  ftpis
  mtp
  onedrive
  afc
  ftp
  burn
  afp
  google-drive
  davs
  dav
  smb
  dns-sd
  nfs
  gphoto2
  archive
  sftp
  ssh
  recent
  trash
  wsdd
  ftps
  resource
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.277: Registered thumbnailer '/home/terzag/.local/share/thumbnailers/folder.thumbnailer'
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.277: Supported mime types:
  inode/directory
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.277: Registered thumbnailer '/usr/share/thumbnailers/atril.thumbnailer'
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.277: Supported mime types:
  application/pdf
  application/x-bzpdf
  application/x-gzpdf
  application/x-xzpdf
  application/postscript
  application/x-bzpostscript
  application/x-gzpostscript
  image/x-eps
  image/x-bzeps
  image/x-gzeps
  application/x-dvi
  application/x-bzdvi
  application/x-gzdvi
  image/vnd.djvu
  image/vnd.djvu+multipage
  image/tiff
  application/x-cbr
  application/x-cbz
  application/x-cb7
  application/x-cbt
  application/vnd.comicbook+zip
  application/vnd-comicbook.rar
  image/*
  application/oxps
  application/vnd.ms-xpsdocument
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.278: Registered thumbnailer '/usr/share/thumbnailers/ffmpegthumbnailer.thumbnailer'
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.278: Supported mime types:
  video/jpeg
  video/mp4
  video/mpeg
  video/quicktime
  video/x-ms-asf
  video/x-ms-wm
  video/x-ms-wmv
  video/x-ms-asx
  video/x-ms-wmx
  video/x-ms-wvx
  video/x-msvideo
  video/x-flv
  video/x-matroska
  application/x-matroska
  application/mxf
  video/3gp
  video/3gpp
  video/dv
  video/divx
  video/fli
  video/flv
  video/mp2t
  video/mp4v-es
  video/msvideo
  video/ogg
  video/vivo
  video/vnd.avi
  video/vnd.divx
  video/vnd.mpegurl
  video/vnd.rn-realvideo
  application/vnd.rn-realmedia
  video/vnd.vivo
  video/webm
  video/x-anim
  video/x-avi
  video/x-flc
  video/x-fli
  video/x-flic
  video/x-m4v
  video/x-mpeg
  video/x-mpeg2
  video/x-nsv
  video/x-ogm+ogg
  video/x-theora+ogg
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.278: Registered thumbnailer '/usr/share/thumbnailers/gdk-pixbuf-thumbnailer.thumbnailer'
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.278: Supported mime types:
  image/png
  image/jpeg
  image/bmp
  image/x-bmp
  image/x-MS-bmp
  image/gif
  image/x-icon
  image/x-ico
  image/x-win-bitmap
  image/vnd.microsoft.icon
  application/ico
  image/ico
  image/icon
  text/ico
  application/x-navi-animation
  image/x-portable-anymap
  image/x-portable-bitmap
  image/x-portable-graymap
  image/x-portable-pixmap
  image/tiff
  image/x-xpixmap
  image/x-xbitmap
  image/x-tga
  image/x-icns
  image/x-quicktime
  image/qtif
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.278: Registered thumbnailer '/usr/share/thumbnailers/librsvg.thumbnailer'
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.278: Supported mime types:
  image/svg+xml
  image/svg+xml-compressed
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.278: Registered thumbnailer '/usr/share/thumbnailers/epub.thumbnailer'
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.278: Supported mime types:
  application/epub+zip
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.278: Registered thumbnailer '/usr/share/thumbnailers/gnome-font-viewer.thumbnailer'
tumbler-desktop-thumbnailer-DEBUG: 00:16:22.278: Supported mime types:
  application/x-font-ttf
  application/x-font-pcf
  application/x-font-type1
  application/x-font-otf
  font/ttf
  font/otf
  font/woff
  font/collection
tumbler-jpeg-thumbnailer-DEBUG: 00:16:22.279: Supported URI schemes:
  file
  admin
  davs+sd
  dav+sd
  ftpis
  mtp
  onedrive
  afc
  ftp
  burn
  afp
  google-drive
  davs
  dav
  smb
  dns-sd
  nfs
  gphoto2
  archive
  sftp
  ssh
  recent
  trash
  wsdd
  ftps
  resource
tumbler-jpeg-thumbnailer-DEBUG: 00:16:22.279: Supported mime types:
  image/jpeg
tumbler-font-thumbnailer-DEBUG: 00:16:22.279: Supported URI schemes:
  file
  admin
  davs+sd
  dav+sd
  ftpis
  mtp
  onedrive
  afc
  ftp
  burn
  afp
  google-drive
  davs
  dav
  smb
  dns-sd
  nfs
  gphoto2
  archive
  sftp
  ssh
  recent
  trash
  wsdd
  ftps
  resource
tumbler-font-thumbnailer-DEBUG: 00:16:22.279: Supported mime types:
  application/x-font-otf
  application/x-font-pcf
  application/x-font-ttf
  application/x-font-type1
tumbler-gepub-thumbnailer-DEBUG: 00:16:22.280: Supported URI schemes:
  file
  admin
  davs+sd
  dav+sd
  ftpis
  mtp
  onedrive
  afc
  ftp
  burn
  afp
  google-drive
  davs
  dav
  smb
  dns-sd
  nfs
  gphoto2
  archive
  sftp
  ssh
  recent
  trash
  wsdd
  ftps
  resource
tumbler-gepub-thumbnailer-DEBUG: 00:16:22.280: Supported mime types:
  application/epub
  application/epub+zip
tumbler-odf-thumbnailer-DEBUG: 00:16:22.280: Supported URI schemes:
  file
  admin
  davs+sd
  dav+sd
  ftpis
  mtp
  onedrive
  afc
  ftp
  burn
  afp
  google-drive
  davs
  dav
  smb
  dns-sd
  nfs
  gphoto2
  archive
  sftp
  ssh
  recent
  trash
  wsdd
  ftps
  resource
tumbler-odf-thumbnailer-DEBUG: 00:16:22.280: Supported mime types:
  application/vnd.ms-powerpoint
  application/vnd.openxmlformats-officedocument.presentationml.presentation
  application/vnd.ms-excel
  application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
  application/msword
  application/vnd.openxmlformats-officedocument.wordprocessingml.document
  application/vnd.oasis.opendocument.presentation-template
  application/vnd.oasis.opendocument.presentation
  application/vnd.oasis.opendocument.spreadsheet-template
  application/vnd.oasis.opendocument.spreadsheet
  application/vnd.oasis.opendocument.text-template
  application/vnd.oasis.opendocument.text-master
  application/vnd.oasis.opendocument.text
  application/vnd.oasis.opendocument.graphics-template
  application/vnd.oasis.opendocument.graphics
  application/vnd.oasis.opendocument.chart
  application/vnd.oasis.opendocument.image
  application/vnd.oasis.opendocument.formula
  application/vnd.sun.xml.impress.template
  application/vnd.sun.xml.impress.template
  application/vnd.sun.xml.impress
  application/vnd.sun.xml.calc.template
  application/vnd.sun.xml.calc
  application/vnd.sun.xml.writer.global
  application/vnd.sun.xml.writer.template
  application/vnd.sun.xml.writer
  application/vnd.sun.xml.draw.template
  application/vnd.sun.xml.draw
  application/vnd.sun.xml.math
  image/openraster
tumbler-ffmpeg-thumbnailer-DEBUG: 00:16:22.280: Supported URI schemes:
  file
  admin
  davs+sd
  dav+sd
  ftpis
  mtp
  onedrive
  afc
  ftp
  burn
  afp
  google-drive
  davs
  dav
  smb
  dns-sd
  nfs
  gphoto2
  archive
  sftp
  ssh
  recent
  trash
  wsdd
  ftps
  resource
tumbler-ffmpeg-thumbnailer-DEBUG: 00:16:22.280: Supported mime types:
  video/jpeg
  video/mp4
  video/mp2t
  video/mpeg
  video/quicktime
  video/x-ms-asf
  video/x-ms-wm
  video/x-ms-wmv
  video/x-msvideo
  video/x-flv
  application/x-flash-video
  application/vnd.rn-realmedia
  video/3gpp
  video/x-matroska
  video/ogg
  video/webm
tumbler-xdg-cache-DEBUG: 00:16:22.285: Initializing the Tumbler XDG cache plugin
tumblerd-DEBUG: 00:16:22.309: Ready to handle requests

tumblerd-DEBUG: 00:16:28.896: Removing files from cache for deleted source files
tumblerd-DEBUG: 00:16:28.896: URIs:
  file:///home/terzag/.cache/thumbnails/normal/a1125284004d7651525544a7a5af45f1.png
  file:///home/terzag/.cache/thumbnails/normal/42e92ea3e316ad9c093380e47813dbe9.png
  file:///home/terzag/.cache/thumbnails/normal
tumblerd-DEBUG: 00:16:30.882: Handling request 1
tumblerd-DEBUG: 00:16:30.882: URIs | Mime types:
  file:///media/terzag/DataVol1/Videos/Musique/Nine%20Inch%20Nails/Broken/Nine%20Inch%20Nails%20-%201993%20-%20Broken%20Movie.mkv | video/x-matroska
tumblerd-DEBUG: 00:16:30.882: Starting job 1
tumbler-gst-thumbnailer-DEBUG: 00:16:30.882: Handling URI 'file:///media/terzag/DataVol1/Videos/Musique/Nine%20Inch%20Nails/Broken/Nine%20Inch%20Nails%20-%201993%20-%20Broken%20Movie.mkv'
tumblerd-DEBUG: 00:16:30.883: Failed attempt for job 1, URI 'file:///media/terzag/DataVol1/Videos/Musique/Nine%20Inch%20Nails/Broken/Nine%20Inch%20Nails%20-%201993%20-%20Broken%20Movie.mkv': Code 2, message: Impossible de générer la miniature à partir du contenu du fichier
tumbler-ffmpeg-thumbnailer-DEBUG: 00:16:30.883: Handling URI 'file:///media/terzag/DataVol1/Videos/Musique/Nine%20Inch%20Nails/Broken/Nine%20Inch%20Nails%20-%201993%20-%20Broken%20Movie.mkv'
tumblerd-DEBUG: 00:16:30.945: Handling request 2
tumblerd-DEBUG: 00:16:30.945: URIs | Mime types:
  file:///home/terzag/.cache/thumbnails/normal | inode/directory
tumblerd-DEBUG: 00:16:30.945: Starting job 2
tumbler-desktop-thumbnailer-DEBUG: 00:16:30.945: 'Exec=sh -c 'folder-thumbnailer "$@"' _ %s %i %o %u': Handling URI 'file:///home/terzag/.cache/thumbnails/normal'
tumblerd-DEBUG: 00:16:30.952: Ready signal for job 1
tumblerd-DEBUG: 00:16:30.953: URIs:
  file:///media/terzag/DataVol1/Videos/Musique/Nine%20Inch%20Nails/Broken/Nine%20Inch%20Nails%20-%201993%20-%20Broken%20Movie.mkv
tumblerd-DEBUG: 00:16:30.953: Finishing job 1

tumblerd-DEBUG: 00:16:30.964: Error signal for job 2: Code 8, message: (domain gdk-pixbuf-error-quark, code 3) Format d’image non reconnu
tumblerd-DEBUG: 00:16:30.964: URIs:
  file:///home/terzag/.cache/thumbnails/normal
tumblerd-DEBUG: 00:16:30.964: Finishing job 2

From what I seem to understand, gst-thumbnailer tries to generate the thumbnail but fails ("code 2: unable to generate a thumbnail from the file's content") and it then goes to ffmpeg-thumbnailer that creates one?

If I disable the FFMpeg thumbnailer in tumbler.rc, I get the following message:

tumbler-desktop-thumbnailer-DEBUG: 00:25:08.306: 'Exec=ffmpegthumbnailer -i %i -o %o -s %s -f': Handling URI 'file:///media/terzag/DataVol1/Videos/Musique/Nine%20Inch%20Nails/Broken/Nine%20Inch%20Nails%20-%201993%20-%20Broken%20Movie.mkv'

So in the end, it falls back to FFMpeg again but with a different generic thumbnailer?

Last edited by abelthorne (2025-03-30 22:27:03)

ToZ

Administrator

From: Canada

Registered: 2011-06-02

Posts: 12,012

Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

Interesting.

First of all, see if this is related?

It looks like the desktop thumbnailer is picking up ffmpegthumbnailer even though its disabled. Perhaps a new bug report at the link above would help.

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Mark solved threads as [SOLVED] to make it easier for others to find solutions.
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abelthorne

Member

Registered: 2020-03-02

Posts: 25

Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

First things first: as I mentioned, when the dedicated FFMPeg thumbnailer is disabled, it seems that tumbler falls back to the desktop thumbnailer which, if I understand the doc correctly, is the one that uses the various thumbnailers in /usr/share/thumbnailers (or local equivalent). I have a ffmpegthumbnailer.thumbnailer there that contains the following:

[Thumbnailer Entry]
TryExec=ffmpegthumbnailer
Exec=ffmpegthumbnailer -i %i -o %o -s %s -f
MimeType=video/jpeg;video/mp4;video/mpeg;video/quicktime;video/x-ms-asf;video/x-ms-wm;video/x-ms-wmv;video/x-ms-asx;video/x-ms-wmx;video/x-ms-wvx;video/x-msvideo;video/x-flv;video/x-matroska;application/x-matroska;application/mxf;video/3gp;video/3gpp;video/dv;video/divx;video/fli;video/flv;video/mp2t;video/mp4v-es;video/msvideo;video/ogg;video/vivo;video/vnd.avi;video/vnd.divx;video/vnd.mpegurl;video/vnd.rn-realvideo;application/vnd.rn-realmedia;video/vnd.vivo;video/webm;video/x-anim;video/x-avi;video/x-flc;video/x-fli;video/x-flic;video/x-m4v;video/x-mpeg;video/x-mpeg2;video/x-nsv;video/x-ogm+ogg;video/x-theora+ogg

It seems to be installed by the ffmpegthumbnailer package. Not sure why I have it installed, maybe I did install it manually at some point when I noticed that I didn't get covers generated for MKV anymore (to check if it changed things) or it was preinstalled by Xubuntu. I don't see it as a dependency or recommended package for a few packages I checked (the tumbler ones and the xubuntu-desktop metapackage) so I guess it's not related to Xfce/tumbler and probably not installed by Xubuntu originally?

If I uninstall it and delete the thumbnails while having the dedicated thumbnailer disabled, I don't have a thumbnail generated at all. So that at least explains why I had that fallback.

Uninstalling it doesn't fix the original issue, though, I still don't have thumbnails generated from the cover.jpg embedded in MKV files.

Regarding the bug you linked, the test file with AAC produces a standard thumbnail (generated from one of the video's frames) while the Opus and Vorbis ones have no thumbnail created at all. No cover in any case... which seems normal as none of these files have actual images embedded in them (I've checked with MKVToolNix and VLC), the cover they show is just the video track. So, I'm a bit confused as to what the report is about, if it's thumbnail generation in general for MKV with specific audio formats or for embedded cover art (as attachments, which is what I use and trying to get a thumbnail from).

My MKV files mostly have AAC or AC3 for the audio tracks.

Last edited by abelthorne (2025-03-31 07:52:53)

Tamaranch

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Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

EDIT: ok, I figured it out, pkg-config is just supposed to find the path to tumbler-1.

It doesn't find it for you? i.e.

pkg-config --variable=libdir tumbler-1

returns nothing?

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abelthorne

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Posts: 25

Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

It doesn't find it for you? i.e.

pkg-config --variable=libdir tumbler-1

returns nothing?

Correct, no output at all. My assumption was that this is distro-specific and the command on the debug mode page works on Fedora or Arch or whatever but not Ubuntu, but given that you're surprised I assume that it's not normal?

Tamaranch

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Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

Ah I understand, the pkg-config files are in the *-dev packages on ubuntu (and all debian based distros I guess). It's a pain...

Added later 25 min 52 s:
I modified the doc. Regarding the original problem here, I think the fact that it worked before and doesn't work now is due to a gstreamer update that broke this functionality. There's nothing in tumbler that directly retrieves thumbnails from video or audio files, it's the plugins that do it, via external APIs. And the behavior described above is the expected behavior, so I don't see a bug here.

Maybe you can try running gst-launch-1.0 as described in https://gitlab.freedesktop.org/gstreame … te_1973727, since apparently it works, and make a custom thumbnailer from that: https://docs.xfce.org/xfce/tumbler/avai … umbnailers

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abelthorne

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Registered: 2020-03-02

Posts: 25

Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

And the behavior described above is the expected behavior, so I don't see a bug here.

Well, I guess it depends if the functionality broke in GStreamer upstream, in which case it's not a tumbler bug, or if that's the GST thumbnailer provided by tumbler that broke (because the API for GStreamer changed or something), and if so I guess that's a tumbler bug? Not sure how to check at which point it fails in more details. Do you have more infos about a specific GStreamer update that broke this?

I'll take a look at gst-launch but a quick test with the command in the bug report you linked just extracts a frame from the video to generate a thumbnail, which is what the FFMpeg thumbnailer currently does by itself properly, except that it also works with the broken opus/vorbis files from the other bug report, so I guess that it mostly addresses that specific issue. It does not seem to extract the embedded cover.jpg to generate the thumbnail (which is what I'm trying to do).

Assuming that the functionality broke or was removed in GStreamer, I guess an option would be to make a custom thumbnailer using mkvextract. I'll see if I can make something work. EDIT: this might me more complicated than I thought as attachments can be of several types (not only images), so the script would have to find all of them, filter the ones that are images, check if there's one that fits the cover names and so on...

Last edited by abelthorne (2025-03-31 10:44:30)

Tamaranch

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Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

Well, I guess it depends if the functionality broke in GStreamer upstream, in which case it's not a tumbler bug, or if that's the GST thumbnailer provided by tumbler that broke (because the API for GStreamer changed or something), and if so I guess that's a tumbler bug?

This plugin has essentially not changed since xfce 4.16, and the gstreamer API doesn't change its behavior without a major version change, so it's very unlikely that the change comes from tumbler (or its plugins).

Not sure how to check at which point it fails in more details. Do you have more infos about a specific GStreamer update that broke this?

No, really none, sorry.

Assuming that the functionality broke or was removed in GStreamer, I guess an option would be to make a custom thumbnailer using mkvextract

I think a custom thumbnailer would be best in this case, indeed.

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abelthorne

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Posts: 25

Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

I haven't had time to look into making a custom thumbnailer yet (and won't probably before a while) but I've just noticed something by accident: if I rename a Mastroska file by removing its extension (.mkv) and it doesn't already have a thumbnail in the cache, I see tumbler creating one with the embedded cover for a split second before it is replaced by a frame of the video.

So, it seems that Matroska thumbnailing for embedded cover images still works but there's another thumbnailer (FFMpeg?) that supercedes it.

Probably a config issue and/or some packages that shouldn't be there but I'm a bit confused regarding the previous tests.

Tamaranch

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Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

I suspect it's more something cached in thunar, or a rename request that precedes a thumbnail creation request. You'd have to look at the debug logs again, as above, to find out exactly what tumblerd is doing, but a successful thumbnail creation can't override another one that has already succeeded for a plugin with a higher priority: tumblerd stops at the first successful thumbnail creation, respecting the order of priority defined in the tumbler.rc config file (and the order of priority of XDG_DATA_DIRS).

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abelthorne

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Posts: 25

Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

So, I did some tests:

First, I make sure to delete the thumbnails cache and go into a dir where there is a single Matroska file. A video frame thumbnail is regenerated in the thumbnails cache (normal/5d92d855c418af72a2ff7686de3b42fc.png).

1) I kill Tumbler, restart in debug mode and refresh the window:

tumblerd-DEBUG: 09:55:41.656: Handling request 1
tumblerd-DEBUG: 09:55:41.656: URIs | Mime types:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv | video/x-matroska
tumblerd-DEBUG: 09:55:41.656: Starting job 1
tumblerd-DEBUG: 09:55:41.657: Ready signal for job 1
tumblerd-DEBUG: 09:55:41.657: URIs:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv
tumblerd-DEBUG: 09:55:41.657: Finishing job 1

Tumbler does nothing as the file hasn't changed. So far, Nothing unexpected.

2) I rename the file to remove the .mkv extension, Tumblr automatically recreates a video frame thumbnail for the new file (normal/5da29e007ae41de40cc406612c5f9d73.png):

tumblerd-DEBUG: 09:56:13.391: Handling request 2
tumblerd-DEBUG: 09:56:13.391: URIs | Mime types:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007) | application/x-matroska
tumblerd-DEBUG: 09:56:13.391: Starting job 2
tumbler-gst-thumbnailer-DEBUG: 09:56:13.392: Handling URI 'file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007)'
tumblerd-DEBUG: 09:56:13.409: Dequeuing files for job 2
tumblerd-DEBUG: 09:56:13.432: Handling request 3
tumblerd-DEBUG: 09:56:13.432: URIs | Mime types:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007) | application/x-matroska
tumblerd-DEBUG: 09:56:13.432: Starting job 3
tumbler-gst-thumbnailer-DEBUG: 09:56:13.432: Handling URI 'file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007)'
tumblerd-DEBUG: 09:56:13.545: Finishing job 2

tumblerd-DEBUG: 09:56:13.604: Ready signal for job 3
tumblerd-DEBUG: 09:56:13.604: URIs:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007)
tumblerd-DEBUG: 09:56:13.604: Finishing job 3

tumblerd-DEBUG: 09:56:13.645: Moving files in cache for moved source files
tumblerd-DEBUG: 09:56:13.645: From URIs | To URIs:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv | file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007)
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv | file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007)
tumblerd-DEBUG: 09:56:13.651: Handling request 4
tumblerd-DEBUG: 09:56:13.651: URIs | Mime types:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007) | application/x-matroska
tumblerd-DEBUG: 09:56:13.652: Starting job 4
tumblerd-DEBUG: 09:56:13.652: Ready signal for job 4
tumblerd-DEBUG: 09:56:13.652: URIs:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007)
tumblerd-DEBUG: 09:56:13.652: Finishing job 4

tumblerd-DEBUG: 09:56:13.655: Handling request 5
tumblerd-DEBUG: 09:56:13.655: URIs | Mime types:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007) | application/x-matroska
tumblerd-DEBUG: 09:56:13.655: Starting job 5
tumblerd-DEBUG: 09:56:13.655: Ready signal for job 5
tumblerd-DEBUG: 09:56:13.655: URIs:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007)
tumblerd-DEBUG: 09:56:13.655: Finishing job 5

Thumbnail is still the same, although it seems to be using only the GST thumbnailer and twice in a single request for some reason.

3) I delete the thumbnails cache ("normal" and "large" subdirs in ~/.cache/thumbnails) and refresh the window:

tumblerd-DEBUG: 09:58:35.726: Handling request 6
tumblerd-DEBUG: 09:58:35.726: URIs | Mime types:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007) | application/x-matroska
tumblerd-DEBUG: 09:58:35.726: Starting job 6
tumbler-gst-thumbnailer-DEBUG: 09:58:35.727: Handling URI 'file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007)'
tumblerd-DEBUG: 09:58:35.855: Ready signal for job 6
tumblerd-DEBUG: 09:58:35.855: URIs:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007)
tumblerd-DEBUG: 09:58:35.855: Finishing job 6

The thumbnail is now the proper one, generated from the embedded cover.jpg. GST again but only once.

4) I rename the file to add the .mkv extension back and refresh the window:

tumblerd-DEBUG: 09:59:35.855: Handling request 7
tumblerd-DEBUG: 09:59:35.855: URIs | Mime types:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv | video/x-matroska
tumblerd-DEBUG: 09:59:35.855: Starting job 7
tumbler-gst-thumbnailer-DEBUG: 09:59:35.856: Handling URI 'file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv'
tumblerd-DEBUG: 09:59:35.857: Failed attempt for job 7, URI 'file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv': Code 2, message: Impossible de générer la miniature à partir du contenu du fichier
tumbler-ffmpeg-thumbnailer-DEBUG: 09:59:35.857: Handling URI 'file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv'
tumblerd-DEBUG: 09:59:35.876: Dequeuing files for job 7
tumblerd-DEBUG: 09:59:35.900: Handling request 8
tumblerd-DEBUG: 09:59:35.900: URIs | Mime types:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv | video/x-matroska
tumblerd-DEBUG: 09:59:35.900: Starting job 8
tumbler-gst-thumbnailer-DEBUG: 09:59:35.900: Handling URI 'file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv'
tumblerd-DEBUG: 09:59:35.901: Failed attempt for job 8, URI 'file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv': Code 2, message: Impossible de générer la miniature à partir du contenu du fichier
tumbler-ffmpeg-thumbnailer-DEBUG: 09:59:35.901: Handling URI 'file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv'
tumblerd-DEBUG: 09:59:35.936: Ready signal for job 7
tumblerd-DEBUG: 09:59:35.936: URIs:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv
tumblerd-DEBUG: 09:59:35.936: Ready signal for job 8
tumblerd-DEBUG: 09:59:35.936: URIs:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv
tumblerd-DEBUG: 09:59:35.936: Finishing job 7

tumblerd-DEBUG: 09:59:35.958: Ready signal for job 8
tumblerd-DEBUG: 09:59:35.958: URIs:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv
tumblerd-DEBUG: 09:59:35.958: Finishing job 8

tumblerd-DEBUG: 09:59:36.110: Moving files in cache for moved source files
tumblerd-DEBUG: 09:59:36.110: From URIs | To URIs:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007) | file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007) | file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv
tumblerd-DEBUG: 09:59:36.119: Handling request 9
tumblerd-DEBUG: 09:59:36.119: URIs | Mime types:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv | video/x-matroska
tumblerd-DEBUG: 09:59:36.119: Starting job 9
tumblerd-DEBUG: 09:59:36.119: Ready signal for job 9
tumblerd-DEBUG: 09:59:36.119: URIs:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv
tumblerd-DEBUG: 09:59:36.119: Finishing job 9

tumblerd-DEBUG: 09:59:36.125: Handling request 10
tumblerd-DEBUG: 09:59:36.125: URIs | Mime types:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv | video/x-matroska
tumblerd-DEBUG: 09:59:36.125: Starting job 10
tumblerd-DEBUG: 09:59:36.125: Ready signal for job 10
tumblerd-DEBUG: 09:59:36.125: URIs:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv
tumblerd-DEBUG: 09:59:36.125: Finishing job 10

No change to the thumbnail, still the right one but regenerated as 5d92d855c418af72a2ff7686de3b42fc.png. But there is some weird stuff happening: GST tries to generate the thumbnail but fails with a code 2 error ("unable to generate the thumbnail from the content of the file"); then, FFMpeg does it, then GST fails again, then FFMpeg does it again (all of this in job 7).

5) I delete the cache again and refresh the window:

tumblerd-DEBUG: 10:01:28.957: Handling request 11
tumblerd-DEBUG: 10:01:28.958: URIs | Mime types:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv | video/x-matroska
tumblerd-DEBUG: 10:01:28.958: Starting job 11
tumbler-gst-thumbnailer-DEBUG: 10:01:28.958: Handling URI 'file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv'
tumblerd-DEBUG: 10:01:28.958: Failed attempt for job 11, URI 'file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv': Code 2, message: Impossible de générer la miniature à partir du contenu du fichier
tumbler-ffmpeg-thumbnailer-DEBUG: 10:01:28.958: Handling URI 'file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv'
tumblerd-DEBUG: 10:01:29.011: Ready signal for job 11
tumblerd-DEBUG: 10:01:29.011: URIs:
  file:///mnt/datavol1/Videos/Documentaires/Musique/Joy%20Division%20&%20New%20Order/Joy%20Division%20(2007).mkv
tumblerd-DEBUG: 10:01:29.011: Finishing job 11

Now back to a video frame thumbnail instead of being made from the embedded cover.jpg. Error from GST, thumb created by FFMpeg.

Note that during some of my tests (and the accidental renaming of a file that originally showed me that I could still get the right thumbnail), the proper thumbnail is generated at step 2 (just after renaming) instead of 3 (after deleting the cache). I'm not sure if there's some randomness in this or if I messed up something during my tests. The process I've reported here has been tested twice in a row.

Just to be sure about something: Tumbler uses the thumbnails in ~/.cache/thumbnails only, right? (and maybe ~/.thumbnails but it's symlinked to the other dir.) It doesn't have it own cache dir somewhere?

Another thing I plan to do when I have a bit of time is install a fresh Xubuntu in a VM to check what packages related to thumbnailing/Tumbler are installed originally and see if I can reproduce the same behavior I have on my desktop.

Last edited by abelthorne (2025-04-29 08:24:02)

Tamaranch

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Registered: 2020-12-31

Posts: 389

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Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

Ok so I think there's nothing wrong with tumbler itself, but there does seem to be a bug with gstreamer, which behaves differently depending on whether you pass it a filename with or without an 'mkv' extension. This point needs to be reproduced with a shareable test video file and minimal test code reproducing tumbler's call to the gstreamer API, in order to produce a bug report that can be used upstream: https://gitlab.freedesktop.org/gstreamer

If you can share such a video somewhere and I can reproduce the problem, I can take care of making this report with the appropriate piece of code.

As for the rest, thunar seems to send rather disorganized requests: it asks to create a thumbnail for a file that has just been renamed, before sending a rename request that overwrites the previous thumbnail creation. This is what I assumed in #12, and explains why you sometimes see the "right thumbnail" being replaced by the "wrong one". In fact, the reverse is also true, although you may not have time to see it: in the penultimate logs above where the gst plugin fails, the wrong thumbnail is created before being replaced by the right one by renaming.

Similarly, thunar sometimes sends an undo request before resending the same request, but this isn't a big deal (and has probably changed in current versions 4.20.x/4.21.x). If it weren't for the gstreamer bug, you wouldn't notice. That's the main problem.

Added later 02 min 45 s:

Just to be sure about something: Tumbler uses the thumbnails in ~/.cache/thumbnails only, right? (and maybe ~/.thumbnails but it's symlinked to the other dir.) It doesn't have it own cache dir somewhere?

No, it only uses the locations specified in the freedesktop specification: https://specifications.freedesktop.org/ … ctory.html

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abelthorne

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Registered: 2020-03-02

Posts: 25

Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

I've made a quick video as a Matroska file with an embedded cover.jpg. You can download it from there if you want to test stuff: https://transfert.free.fr/nCST4ka (link should be valid for 30 days).

Tamaranch

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Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

Ok thanks, I can reproduce the issue, I'll look into it later.

Added later 3 h 46 min 37 s:
So in fact it's a bug (a priori) in tumbler or glib: https://gitlab.gnome.org/GNOME/glib/-/issues/3679
I'd forgotten that we'd added a mime-type comparison following a vulnerability report:
https://gitlab.xfce.org/xfce/tumbler/-/issues/65
https://gitlab.xfce.org/xfce/tumbler/-/ … fdacb2daa5
I'll probably add an exception for that in tumbler eventually, but I'm waiting a bit to see what the feedback is upstream.

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abelthorne

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Posts: 25

Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

Thanks for the heads up. I didn't notice at first that there were indeed two different MIME types mentioned in the logs during my tests.

Tamaranch

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Posts: 389

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Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

I didn't notice at first that there were indeed two different MIME types mentioned in the logs during my tests.

Me neither!    I only found out when I added traces around the glib functions to see where the problem was coming from. I pushed a patch following the advice given upstream: https://gitlab.xfce.org/xfce/tumbler/-/ … 2e708a2b06
I've also created a 4.20 branch, but I've no idea when a 4.20.1 version will be released...

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Xfce maintainer: https://gravatar.com/gaelbonithon

abelthorne

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Registered: 2020-03-02

Posts: 25

Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

Would it be possible to apply the patch to my current version of tumbler (4.18.1) and only compile the GST plugin? I have basic knowledge in compiling stuff but not much in applying patches, compiling parts of an app like a specific plugin...

Tamaranch

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From: France

Registered: 2020-12-31

Posts: 389

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Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

It's not easy to build just the plugin, and you'll have to configure the whole project anyway, so you'll need all the dependencies (-dev packages on ubuntu). So the easiest thing is probably to build the whole project with the default options (following the instructions in README.md), which will install it in /usr/local, then copy /usr/local/lib/tumbler-1/plugins/tumbler-gst-thumbnailer.so into /usr/lib/tumbler-1/plugins (or the appropriate libdir in your case).

As for applying the patch, perhaps the easiest thing to do is to download the 4.18.x archive (https://archive.xfce.org/src/xfce/tumbler/4.18/), and apply it by hand in plugins/gst-thumbnailer/gst-thumbnailer.c, since the modification only takes a few lines. Because if you copy the file retrieved from gitlab I don't think it will compile (because of other changes that took place in between), and if you build from a clone of the repository you'll need xfce4-dev-tools and maybe other dependencies as well.

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Xfce maintainer: https://gravatar.com/gaelbonithon

abelthorne

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Registered: 2020-03-02

Posts: 25

Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

Yeah, that's what figured and I'm currently trying to do it. But when I try the ./configure, I'm currently at the following state:

Plugins:

  * GdkPixbuf thumbnailer plugin:                     yes
  * Cover thumbnailer plugin:                         yes
  * FreeType font thumbnailer plugin:                 no
  * JPEG thumbnailer plugin with EXIF support:        yes
  * Video thumbnailer plugin using ffmpegthumbnailer: no
  * Video thumbnailer plugin using GStreamer:         no
  * ODF thumbnailer plugin using libgsf:              no
  * PDF/PS thumbnailer plugin using poppler:          no
  * RAW thumbnailer plugin using libopenraw:          no
  * Freedesktop.org cache plugin:                     yes
  * Loading thumbnailers from .thumbnailer files:     yes
  * EPUB thumbnailer using libgepub:                  no

I'm not sure which -dev package I need to install for the GST plugin. Any idea? EDIT: tried libgstreamer1.0-dev but no luck.

Last edited by abelthorne (2025-05-06 10:29:28)

Tamaranch

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From: France

Registered: 2020-12-31

Posts: 389

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Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

I'd say the gstreamer deps listed here, with -dev suffix: https://packages.ubuntu.com/noble/tumbler

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Xfce maintainer: https://gravatar.com/gaelbonithon

abelthorne

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Registered: 2020-03-02

Posts: 25

Re: Getting attachement thumbnails from Matroska (MKV) files with tumbler?

Oh yeah, didn't think about checking the dependencies there. It was simply libgstreamer-plugins-base1.0-dev missing.

So, it compiled fine, I replaced the original plugin and it seems to work, I get thumbnails from the embedded cover.jpg of my Mkv files. Cool.

Thanks a lot for the fix and the help!