YOU DON'T NEED ANY DOWNLOADER OR CONVERTER. SOME OF THE PEOPLE
ANSWERING YOUR QUESTION ARE REALLY DISGUISED SALESPEOPLE TRYING
TO "SUCKER" YOU INTO BUYING THEIR BOGUS AND UNNECESSARY PROGRAM.
If you’re using Windows Movie Maker, there
is the probability that you mistakenly saved
your video as an ".MSWMM" file with "Save
Project". If all your video editing is complete
(and you are ready to upload it), you should
be saving your video as a ".WMV" file using
→ "Save Movie File" (if you have Win XP) or
→ "Publish Movie" (if you have Vista).
There is a ton of difference between the first
example and the other 2. MSWMM is not a
real video, but really a "work-in-progress". If
you'd like to upload a video to YouTube that
won't give you the dreaded "Failed" or "error"
message, simply do one of the 2 alternative
methods above, or consider the following as
the ideal way to save and upload your video:
1 -- click the blue "Tasks" icon.....(you'll get the "Movie Tasks" menu)
2 -- click "Finish Movie", the 3rd option.....(it will expand to 5 choices)
3 -- click "Save to my Computer"....(the "Save Movie" wizard appears)
4 -- enter the name of your movie....(it is best to save in "My Videos")
5 -- click "Next" at the bottom.....(you'll see the "Movie Setting" page)
6a -- for regular video, click "Best quality for playback".....(the default)
6b -- for 16:9, click "Show more choices", then tweak it until 640x360
7 -- click "Next" at the bottom.....(the saving might take quite a while)
8 -- click "Finish" at the bottom.....(your video is saved the good way)
YouTube recommends your video format be
MPEG-4 at 480x360 recorded together with
sound in MP3 audio, all at a rate more than
24 frames per second. For 16:9 widescreen,
the dimensions of YouTube's "Flash" player
are exactly 640x360. Other file formats that
are readily accepted by YouTube are: MOV,
MPG, AVI, and WMV -- which is the format
for Windows Movie Maker.
Here are my relevant "Help" references with
their URL addresses completely written-out
in full, followed by their direct links:
Differences between "projects" and "movies"
windows help . microsoft . com / Windows / en - US / Help / 4cad 2674 - 4d43 - 4751 -
9b0d - 3ba8 febd a8d6 1033 . mspx
http://windowshelp.microsoft.com/Windows/en-US/Help/4cad2674-4d43-4751-9b0d-3ba8febda8d61033.mspx
How to save your video if you've got Win XP
www . microsoft . com / windows xp / using / movie maker / create / save to pc . mspx
http://www.microsoft.com/windowsxp/using/moviemaker/create/savetopc.mspx
How to save your video with Windows Vista
windows help . microsoft . com / Windows / en - US / help / 4ea4 b6cd - 0cfe - 4d02 -
8122 - 16c2 8828 cdf2 1033 . mspx # EJ
http://windowshelp.microsoft.com/Windows/en-US/help/4ea4b6cd-0cfe-4d02-8122-16c28828cdf21033.mspx#EJ
YouTube's ideal video format / compression
www . google . com / support / youtube / bin / answer . py ? hl = en & answer = 91450
http://www.google.com/support/youtube/bin/answer.py?hl=en&answer=91450
I hope my answer is what you're looking for.