http://submit.shutterstock.com/footage_info.mhtmlFootage
Footage must be at least 480 pixels in height with an aspect ratio of at least 4:3. We are asking that film clips try and abide by the NTSC standard of 29.97fps (frames per second) with a time limit no longer than 60 seconds. Film clips that are uploaded with the PAL standard of 25fps are also fine.
Footage must NOT contain any sound bites not produced by the footage producer without a property release from the audio creator.
Footage should be correctly exposed and in-focus. Audio should be seamless.
Footage submitted should be digital only and we will try to accommodate any file type, including DV, Windows Media, and QuickTime.
Submitters should NOT submit any footage shot with a digital point and shoot camera.
Any one batch should contain no more than 20 clips.
Keep in mind that using a tripod increases the chance that the clip will be accepted.