The .txt you include is a bit more accurate. I believe both files need to be places in c:windowssystem32 and then the command you run is regsvr32 QuickThumb.dll; WITHOUT '/u' (which i think is the switch to UNregister..)
Thanks a lot for putting this together. Very handy :)

Hmm, you're probably right.  I changed it in the post above.  Thanks.

How cool is this!
Struggled without for years.
Makes life so much easier!
THANK YOU VERY MUCH!

I just wanted you to know that you probably just saved me a freelance video editing job... I had been struggling with this for days and was almost ready to give up. Thank you so much!

Awesome!  Glad my little discoveries are actually helping people.

Fantastic. Thank you.
One problem though: when using the Search function in Explorer (with View set to Thumbnail) Explorer crashes just as the last thumbnail is displayed. (Windows XP)

Hmm that's a shame.  I should've said at the beginning that I can't guarantee it won't make your computer blow up.

For video files you can use Thumbnailer from CapTrue. It is a WMP plugin, and when you using it you can assign ANY frame of your video as a thumbnail. Works with .mov and .mkv either.
http://www.captrue.com/thumbnailer.html

Thanks!!!!!!!!    por fin encontré la solución a mi problema...!!!!
GRACIaS!!!!
problema para ver vistas miniatura en el explorador de windows xp, se ralentiza, video .mov

thanks for sharing such great idea i was suffering for decades  !

Thank you for this

Thanks so much! I have wanted to continue editing home video clips of my children, and with my new Casio camera/video camera only producing .MOV files, I was a bit lost on how to continue without the painstaking task of viewing each clip "blindly" to find the right ones. This worked! You've saved me hours...and nerves!! ;-)

I'm getting an Explorer error in quickthumb.dll everytime I attempt to set the view mode to thumbnails in explorer. I put the files in windows/system.. how can I unregister quickthumb.dll? This is annoying...

I believe you unregister with regsvr32 /u QuickThumb.dll.

Brilliant, thanks.
I have been relying on seeing the thumbnails through Google's Picasa but this is better.

Not working. Both QuickThumb.dll and RealThumb.dll crash my WinXPSP2 :((

Thank you!
It's really useful for my animations. Thanks.

says I cannot open the .dll file.  What am I doing wrong?

You're trying to open the DLL file.  Don't.  Follow the directions.

Brilliant, had trouble installing in Vista had to turn off UAC to get the dll to register, you may want to add that to the instructions

Thanks man .... this really helps me a lot . Again ... many thanks for this post .

I found this dll yesterday and tried and it crashed stating "the instruction at "0x01e827de" refrenced at "0x00000020".  The memory could not be "read"." with different addresses every time.  It seems to crash when it tries to paint the thumbnails.  I noticed when I copied MSVCR70.dll there is one already there that is 336kb (as opposed to the one you provide which is 300kb).  First I copied both files to system 32, registered quickthumb.dll then tested with a crash.  Then I tried with the origional 336kb MSVCR70.dll, unregistered and registered quickthumb.dll with a crash.

I am running SP3.

I appreciate any help getting this to work.  I looked into the UAC thing but that looks like a vista issue.

I have no idea.  I'm just the messenger.

Does this work for Vista x64Bit?  Any help is appreciated.

cheers works a treat!

almost two years later, still works XD thank you

tnk, works super ok for my sp3

Thanks so much!!! Works great!!! Respect Yoooo!!

Works fine for all movs,exept for hd=(It crushes win explorer,still thx)

Hi.. downloaded today QuickThumb.dll v0.21 and placed it in C:WINDOWSSYSTEM32 folder. Upon viewing my pictures folder containing .MOV files from my Kodak camera, it crashes windows Explorer almost immediately. I'm presently using XP sp3. I'll Google some more.
Rick

Works like magic!! Million thanks~

Work! Many Thanks!

Windows XP Professional, SP3  -- worked like a CHARM~  Thank you.

Thank you, this worked for me!

works perfect~!  makes my workflow 100x more efficient.

Same deal with me, SP3 installed and Explorer crashes to blank desktop

XP Pro SP3 using "regsvr32 QuickThumb.dll" downloaded right to /windows/system32  works like a charm.  Excellent project, excellent use of system resources for a tweak that SHOULD have been in XP all along!  Cheers!

Thank you so much for posting this.  Very useful!

Can't remember a moment where I was as happy as a few minutes ago.
IT WORKS!!!!! Finally after 8 years the solution.
Saves me a hell lot of conversions and search actions now.
btw: I only copied the QuickThumb.dll in system32 because the existing file was newer
and it works perfect.
Thanx from Holland, haha

This works like a charm. Installed it under XP SP3. No msvcr.dll needed. Worked instantly.Thank you very much.  Now I need a simple way to cut .mov files (avi. files i simply cut in VirtualDub, but with .mov this won't work)

It really worked! Thankyou so much for posting this. I was looking for 2 days.

Hoorah!

hey I did exactly and have an error, it says that quickthumb.dll is not an executable file...
I am runing windows XP 64bit

Brilliant. it works for me xp, sp2. I did almost everything and nothing worked till this post. Thanks Dave..

This procedure will crash Windows Explorer.  Really not recommended.  I'm a bit skeptical of those that say it worked.

You should be weary-- because it doesn't work.

With me it still works on 2 computers (Windows XP 32Bit SP3)
No crash of explorer etc. or other issues. Just needed the Quickthump.dll file

Maybe it has to do with the 64bit versions of WindowsXP
My next install will be Windows7 so this issue will be solved.

@Mike: If it doesn't work for you, sorry. You have to find an other solution.
But no reason to be skeptical on those of who worked the patch for.
I'm also not sceptical of your copy-paste capabillities ;-)
It still was worth the try

I am skeptical only because it certainly doesn't always work (read those reports in every forum that discusses this dll) and crashing Explorer is a very serious potential side-effect, but in hindsight I agree with you that I should not have used that word in the context I did, as it infers the (whole) truth was not told, I apologize.  What I'm inclined to believe is that for those users in which this dll does work there is some additional file(s) present which allow this to work for them, otherwise how could this work for some, and absolutely crash Explorer for others?  You see, it didn't just crash Explorer once (while being implemented), but will not allow Explorer to run until the dll is unregistered.  For some users this would be considered catastrophic.

I too, have tried this dll on several 32bit XP SP2 and SP3 machines, although always unsuccessfully, and always with the crash.  What I would like to see is a complete and reliable solution to this issue.  If Quicktime or another MOV codec is installed this registry entry can work:

[HKEY_CLASSES_ROOT.movShellEx{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}]
@="{c5a40261-cd64-4ccf-84cb-c394da41d590}"

This registry entry does not, and can not, cause Windows Explorer to crash, so is ultimately more secure(reliable) than the dll, but again, an appropriately installed codec is required.  I accidentally came back to this page today because of my ongoing search for a reliable solution.  I'm glad I did, because the more people discuss this issue, the more likely a 100% reliable solution (if there is such a thing) will be found.  I think Mike B, the author of this dll, should have gone a bit farther than "...your results may vary" in his warning.

Mike,I agree with you. I also was searching the web for a solution. Installed numerous programs and
codec's. (k-lite codec pack etc) but nothing worked for me.
This DLL did the job for me. Don't know why.

But to play save it's better to install a MOV codec and add that registrycode of your's
Only be carefull when you edit your registry, you could end up in the same crash...
Not for you, but for some people who are not known to a registry editor.
But I added it into my fix list for my next xp install, so thanx.

Defenitily not sceptical of your capabillities, thumps up !! Apologizes on my side ;-)

Dave you're awesome. Over three years later your solution still works as a charm.  It took a minute or two to go through the entire process.  No issues.  Thanks.

THANKS A LOT!!!!!

Fantastic, cheers for this!

Thank you so much, this has been a major irritation since I got an IPhone

Dude!!!! :D  the shiat! I´m so greatfull for your help! :-) it actually worked out ;D

I had to uninstall (unregister) it again, because my explorer was crashing when i got into folders with .mov files. First it was working but since 2011 I got problems. I dont know exactly why, but i think there a certain types of .mov files, that it can't handle... =(  Would be nice if the bug could be fixed, or at least if the explorer didnt crash (no matter if there is no thumbnail)... greets

was skeptical at first... Windows XP SP3 works like a charm...

Thanks Dude, that solved my sorrows. Windows sucks in that way, your tip works great! First time i used those kinda codes, I feel like a real Computer-Nerd ;-)))

Thanks for the simple fix, it worked much better than some of the other methods out there which often recommend manual alterations to the registry.  I can see my MOV thumbnails now which makes working with many small videos a lot faster for editing purposes.  Thanks again.

Dude you are the man!!!  I had been looking for 3 hrs and finally found this, the light at the end of a long tunnel.

Crashes Windows Explorer Win XP Pro SP3.

Same problem here. Crashing Win Explorer in XP Pro (SP3) in certain folders. Some of the MOV files do have thumnails and some don't. I'm guessing that the latter are reacting with QuickThumbs to cause the crash.