Terry Pinnell wrote:
I frequently find that my thumbnails for AVI files in Explorer are
just the generic icon of the player associated (VLC, MPC-HC, etc)
instead of the first frame of the video. 'Refresh Thumbnail' rarely
shows them.
The best temporary solution I've found so far is tedious: I open File
Types and change the association, say from VLC to MPC, MPC-HC or
VirtualDub. Close. Refresh. Re-open and restore the previous
association.
Over the last few years I've raised this vexing problem in a variety
of forum and newsgroups. I've tried a variety of suggestions but have
never found a reliable solution that lasts. I wonder if anyone here
has a good fix?
The mechanism varies, with WinXP using a thumbs.db per folder,
while Vista or later uses a centralized database. The WinXP would
use filenames (since they would be unique per folder), while
Vista or later, uses a hash to identify which thumbnail belongs
with which original file.
"Making the most of Windows Vista/7 thumbcache files"
http://code.google.com/p/thumbcachehelper/
"A note on expected entries!
The number of processed entries doesn't always match the
number of expected entries. This is not the tool missing entries.
The file header (expected) value seems to sometimes be inaccurate.
Not sure why, possibly due to deleted entries - still investigating.
"
As for the generation of thumbnails, I think it's possible to bind
a third-party software to actually generate the thumbnail. But the
system handles the tracking of thumbnails, and if it has a bug in
it, I don't think there is anything you can do about that.
Paul
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