GNOME Bugzilla – Bug 667203
discoverer should generate video/image thumbnails
Last modified: 2018-11-03 11:20:13 UTC
Initially in pitivi as bug #432661, with the port to GES now it would make more sense for gst discoverer to be the one to actually generate video thumbnails according to the fdo spec [0][1]. Perhaps totem-video-thumbnailer could be called, or perhaps totem's code could be upstreamed. 0: https://live.gnome.org/ThumbnailerSpec 1: http://people.freedesktop.org/~vuntz/thumbnail-spec-cache/
That doesn't seem like a good fit for discoverer to me, though I heard that floated before. FWIW, I believe ges-launch has that ability, which may be better for you since you mentioned a port to GES ?
It plugs decoders anyway, so it may just as well support screenshots/thumbnails ..
The port to GES uses pbutils.discoverer. "ges-launch" is not used in applications such as pitivi. Technically, individual applications like pitivi could do the thumbnailing themselves... but really, I think the discoverer might as well do it (it's kind of the point of its existence: doing less work in applications downstream).
I doubt you folks would use this particular tech, but just for the record: it seems that Nautilus, in nautilus-thumbnails.c, calls "gnome_desktop_thumbnail_factory_generate_thumbnail" which means it's offloading that work to the libgnome-desktop library, which would be https://developer.gnome.org/gnome-desktop3/stable/GnomeDesktopThumbnailFactory.html
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