[Bug 17836] totem-video-thumbnailer always previews first frame on *.avi over smb via gnome-vfs

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Ubuntu | totem-xine





------- Additional Comments From smack at smack.gotdns.org  2005-10-16 01:17 UTC -------
(In reply to comment #1)
> This, in my mind, is a feature, not a bug.  SMB browsing can be painfully slow
> if you hit a directory filled with AVIs and it has to scan through each file to
> find a nice frame in the middle to show off to you.
> 

I hadn't considered the performance aspect of this. I have a opteron 1.4 and
gigabit network card. I have a smb share that contains 125 *.avi movies that
take up 87.2GB( 700MB to 1.4GB per file ). If I use nautilus/gnomevfs to go to
the directory it takes 3:57 minutes to make all the thumbnails. If I mount the
share with smbmount it takes 8:01 minutes to make all thumbnails. The gnome-vfs
way makes thumbnails based on the first frame and the smbmount way makes
thumbnails based on a random frame. Can I attribute the difference in speed to
which frame it chooses to make the thumbnail?

I still wouldn't think this would be a feature since a high percentage of movies
contain only black in the first frame.  People that have performance problems
can set nautilus to not generate thumbnails for large files( the default it not
to generate thumbnails for files over 3MB ). If the user have a real problem
with performance it could be set to never preview files over the network.

I ended up downloading the breezy source( 1.2.0 ) and hoary source ( 1.0.1 ) and
I did a diff on the two totem-video-thumbnailer.c. It doesn't look like there
are many difference between them but I'm not a programmer. Perhaps this is a
change in gnome-vfs and I'm barking up the wrong tree.

http://cvs.gnome.org/viewcvs/totem/ChangeLog?view=log I searched through there
for all totem-video-thumbnailer entries also and I didn't see any changes which
would indicate a change in this behavior but again I'm not a programmer. ;(

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