i want all the thumbnails of the video when someone pastes a link on my site like one happening in facebook.dat gives the option to select the thumbnail from its actual thumbnails.
A:
Use some component that allows you to extract the frames, and obtain a frame each x seconds.
Personally I don't know of one in c#, specially if its a web application (you didn't mention).
What I use for video related operations is ffmpeg, like I mentioned in this answer to an unrelated question: how can I create an H-264 encoded movie from a set of images in c# (which happens to be almost the opposite of what you need).
eglasius
2010-09-17 06:31:23