I am looking for a compagny providing ready made movies or videos for
use in adds or documentary as Getty Images does on his site at
"http://creative.gettyimages.com/source/motion/"
Thank you.

hi etienne75,
Here some other sites I have found that provide this kind of
material...
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Bestshot.com is one of the web’s leading sources for stock video
content. Their themes encompass everyday activities, from surfing the
Internet to the stock market. They also include some very nice generic
backgrounds, such as slowly moving color patterns, which work very
well for DVD motion menus and backgrounds for video composites and
titles.
Bestshot 
10303 - 108 street 
Edmonton, AB. 
T5J 1L7 
Phone: 1(780)-426-6178 
Phone Sales: 1(780)-426-6178 
sales@bestshot.com 
http://www.bestshot.com/
Review of their library
http://www.digitalwebcast.com/2002/01_jan/reviews/bestshot.htm
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"The Internet Archive: offers permanent access for researchers,
historians, and scholars to historical collections that exist in
digital format.
http://webdev.archive.org/movies/
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RoyaltyFree.com have affordable quality stock footage of australian
wildlife and nature captured by award winning professionals.
Spectacular footage of  whales, dolphins, kangaroos, koalas, eagles,
parrots, kookaburras, owls, seals, sharks, possums, goannas, lizards,
sunsets, sunrises, clouds, lightning, moon, mountains, forests,
beaches, time-lapse photography and lots more. Their Wildseries is
suitable for television, video, multimedia & more.
http://www.royaltyfree.com.au/video.html
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Ulead.com also has  video footage, and sample clips to download.
http://www.ulead.com/pav_pro/runme.htm
You can download sample video clips from the Ulead Pick-a-Video Pro
collection. The size of the Zip file is 4.3MB and it contains 4 video
clip samples from the Title 16 collection. All the video clips are in
the MOV file format and all video clips have dimensions of 160x120
pixels.
http://www.ulead.com/pav_pro/free_download.htm
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Rubberball productions - professionally shot video clips in 16 and 35
mm film and digitally mastered onto CD. The clips show couples,
children, parents & children etc, and they are royalty-free and
model-released.
http://www.eyewire.com/products/motion/rubberball/
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"Triangle Images" brings visual mastery, gained from years of
experience in professional photography, to their innovative footage.
Shot on 35 mm film or Super 8 (for effect), full-screen movies are
provided in 720 x 486 pixel sizes. Downloadable clips are provided in
320 x 240 and 160 x 120 pixel sizes. All movies are completely
royalty-free.
http://www.eyewire.com/products/motion/triangle/
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I hope this information is useful to you.
Let me know if you need clarification before rating answer
Thanks

Here are some more sources:
STOCK VIDEO is one of the largest and most respected stock footage
houses in the country with thousands of hours of film and video stock
footage.

STOCK VIDEO
a Division of Greystone Producers Corp.
20 McKenna Terrace. Boston, MA 02132
ph: (617)323-4400 
fax: (617)323-3666
Email: stockvideo@aol.com
http://members.aol.com/stockvideo/about.html
Alphabetical index of subjects
http://members.aol.com/stockvideo/index.html
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Storm Video is a stock footage company with an extensive collection of
extreme weather stock footage. Storm Videos team of storm chasers,
travel the US and the world to find extreme weather and document it.
Footage of Tornados, Hurricanes, Typhoons, Hail, Lightning, Blizzards
and other severe weather bring the action to you, without the expense
of trying to chase and film these phenomena.
http://www.stormvideo.com/
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Videometry is a premier provider of royalty free digital video imagery
for the new wave of multi media applications known as Desktop Video.
Videometry's royalty free license model allows for unlimited,
single-user usage of broadcast quality imagery, with only a one-time
purchase.
http://www.videometry.com/
---------------------------------------------------------
Brownbag Productions offers a wide variety of natural history stock
video footage. All of our video is acquired by experienced
naturalist/videographers with both content and technical expertise.
http://www.brownbagproductions.com/natstock2B.html
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Wrightwood Labs offers one of the most extensive and varied
collections of royalty free stock footage and video to be found
anywhere. 
http://www.wrightwood.com/
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Vertical Visions maintains an extensive digital video library of BASE
jumping, skydiving, and other aerial sports
http://www.vertical-visions.com/06stocklibrary.html
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Stock footage library for motion picture and television production and
post-production professionals.
http://www.sourcefootage.com/stock_video.html
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Rocketclips Stock Footage, Inc. is a royalty-free stock footage clip
library offering 4:3 and 16:9, NTSC and multimedia video footage.
Rocketclips is a unique stock footage supplier specializing in stock
video footage of people and lifestyles.
http://www.rocketclips.com/
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Also try:

http://worshiploops.com
for looping video backgrounds for churches

http://digitaljuice.com
for looping video backgrounds for many uses