Ah, you seem to be saying that nautilus doesn't do the thumbnailing itself, but is dependent on an external player. Here are the relevant settings:
potpal:[~/Videos] gconftool-2 -R /desktop/gnome/thumbnailers disable_all = false /desktop/gnome/thumbnailers/application@x-dvi: command = evince-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@xspf@xml: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@flv: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-avi: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-ogg: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-shockwave-flash: /desktop/gnome/thumbnailers/application@x-gnome-theme-installed: command = gnome-theme-thumbnailer %u %o enable = true /desktop/gnome/thumbnailers/application@pdf: command = evince-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/text@x-google-video-pointer: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@quicktime: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@msvideo: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-flash-video: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-quicktimeplayer: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-extension-m4a: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/image@x-bzeps: command = evince-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/misc@ultravox: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-gzpostscript: command = evince-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-extension-mp4: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-ms-wmv: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-mpeg: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /<email address hidden>: command = evince-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-netshow-channel: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/image@x-pict: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-ms-wmx: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@sdp: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /<email address hidden>: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/image@x-gzeps: command = evince-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-matroska: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-flc: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@mp4: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /<email address hidden>: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-ogm@ogg: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/audio@x-pn-realaudio: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@msword: /desktop/gnome/thumbnailers/video@x-msvideo: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-ms-asf: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@mpeg: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-quicktime-media-link: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-cbr: command = evince-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-flic: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/image@x-eps: command = evince-thumbnailer -s %s %u %o enable = true /<email address hidden>: /desktop/gnome/thumbnailers/application@smil: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/text@google-video-pointer: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-theora@ogg: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-fli: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-nsv: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-bzpostscript: command = evince-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-bzpdf: command = evince-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@mp4v-es: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@vivo: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /<email address hidden>: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-font-pcf: command = gnome-thumbnail-font %u %o enable = true /desktop/gnome/thumbnailers/video@fli: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-font-type1: command = gnome-thumbnail-font %u %o enable = true /<email address hidden>: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@postscript: command = evince-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@ogg: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-cbz: command = evince-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-gzpdf: command = evince-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-gnome-theme: command = gnome-theme-thumbnailer %u %o enable = true /desktop/gnome/thumbnailers/video@x-ms-wm: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@ram: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-font-ttf: command = gnome-thumbnail-font %u %o enable = true /desktop/gnome/thumbnailers/video@3gpp: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-m4v: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /<email address hidden>: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@dv: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /<email address hidden>: /desktop/gnome/thumbnailers/application@x-smil: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-matroska: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-shorten: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-ms-wvx: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/video@x-anim: command = /usr/bin/gnome-video-thumbnailer -s %s %u %o enable = true /desktop/gnome/thumbnailers/application@x-font-otf: command = gnome-thumbnail-font %u %o enable = true
and the gnome-video-thumbnailer alternative: lrwxrwxrwx 1 root root 37 2008-04-20 22:56 /etc/alternatives/gnome-video-thumbnailer -> /usr/bin/totem-xine-video-thumbnailer
so totem-xine seems to be doing the thumbnailing.
Ah, you seem to be saying that nautilus doesn't do the thumbnailing itself, but is dependent on an external player. Here are the relevant settings:
potpal:[~/Videos] gconftool-2 -R /desktop/ gnome/thumbnail ers gnome/thumbnail ers/application @x-dvi: gnome/thumbnail ers/application @xspf@xml: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ flv: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-avi: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-ogg: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-shockwave- flash: gnome/thumbnail ers/application @x-gnome- theme-installed : thumbnailer %u %o gnome/thumbnail ers/application @pdf: gnome/thumbnail ers/text@ x-google- video-pointer: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ quicktime: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ msvideo: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-flash- video: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-quicktimepla yer: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-extension- m4a: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/image@ x-bzeps: gnome/thumbnail ers/misc@ ultravox: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-gzpostscript : gnome/thumbnail ers/application @x-extension- mp4: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-ms-wmv: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-mpeg: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-netshow- channel: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/image@ x-pict: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-ms-wmx: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @sdp: gnome-video- thumbnailer -s %s %u %o gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/image@ x-gzeps: gnome/thumbnail ers/application @x-matroska: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-flc: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ mp4: gnome-video- thumbnailer -s %s %u %o gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-ogm@ogg: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/audio@ x-pn-realaudio: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @msword: gnome/thumbnail ers/video@ x-msvideo: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-ms-asf: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ mpeg: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-quicktime- media-link: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-cbr: gnome/thumbnail ers/video@ x-flic: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/image@ x-eps: gnome/thumbnail ers/application @smil: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/text@ google- video-pointer: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-theora@ ogg: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-fli: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-nsv: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-bzpostscript : gnome/thumbnail ers/application @x-bzpdf: gnome/thumbnail ers/video@ mp4v-es: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ vivo: gnome-video- thumbnailer -s %s %u %o gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-font- pcf: -font %u %o gnome/thumbnail ers/video@ fli: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-font- type1: -font %u %o gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @postscript: gnome/thumbnail ers/application @ogg: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-cbz: gnome/thumbnail ers/application @x-gzpdf: gnome/thumbnail ers/application @x-gnome- theme: thumbnailer %u %o gnome/thumbnail ers/video@ x-ms-wm: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @ram: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-font- ttf: -font %u %o gnome/thumbnail ers/video@ 3gpp: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-m4v: gnome-video- thumbnailer -s %s %u %o gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ dv: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-smil: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-matroska: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-shorten: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-ms-wvx: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/video@ x-anim: gnome-video- thumbnailer -s %s %u %o gnome/thumbnail ers/application @x-font- otf: -font %u %o
disable_all = false
/desktop/
command = evince-thumbnailer -s %s %u %o
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
/desktop/
command = gnome-theme-
enable = true
/desktop/
command = evince-thumbnailer -s %s %u %o
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = evince-thumbnailer -s %s %u %o
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = evince-thumbnailer -s %s %u %o
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/<email address hidden>:
command = evince-thumbnailer -s %s %u %o
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/<email address hidden>:
command = /usr/bin/
enable = true
/desktop/
command = evince-thumbnailer -s %s %u %o
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/<email address hidden>:
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = evince-thumbnailer -s %s %u %o
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = evince-thumbnailer -s %s %u %o
enable = true
/<email address hidden>:
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = evince-thumbnailer -s %s %u %o
enable = true
/desktop/
command = evince-thumbnailer -s %s %u %o
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/<email address hidden>:
command = /usr/bin/
enable = true
/desktop/
command = gnome-thumbnail
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = gnome-thumbnail
enable = true
/<email address hidden>:
command = /usr/bin/
enable = true
/desktop/
command = evince-thumbnailer -s %s %u %o
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = evince-thumbnailer -s %s %u %o
enable = true
/desktop/
command = evince-thumbnailer -s %s %u %o
enable = true
/desktop/
command = gnome-theme-
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = gnome-thumbnail
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/<email address hidden>:
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/<email address hidden>:
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = /usr/bin/
enable = true
/desktop/
command = gnome-thumbnail
enable = true
and the gnome-video- thumbnailer alternative: es/gnome- video-thumbnail er -> /usr/bin/ totem-xine- video-thumbnail er
lrwxrwxrwx 1 root root 37 2008-04-20 22:56 /etc/alternativ
so totem-xine seems to be doing the thumbnailing.