Hello
I am working on videos from a canon GL1 and working on final cut 5.1.4
and I am exporting the movie for the web.Do I have to deinterlace, and if its yes at what setting?
thank you

It depends what you shot it in. Did you shoot in 24p or 24pA? If you shot in 24pA - I'd recommend de-interlacing if you are going to output to some sort of video source or expect others to - that being said - If it is for youtube or similar, this is extra work.

As far as digital is concerned, QuickTimes don't care about framerate - the problems arise when you try to play out on NTSC / PAL monitors.

Long story short - for web - don't worry about it.

-C

@ Christopher - There is no 24p mode of any sort of the GL1 or GL2 (there might be Canon's old Frame movie mode). Anyway with a movie that has 24pA it's not de-interlace, it's pulldown removal. (Completely different thing and best done in cinematools).

@ Martin - If you're uploading to the web, the footage needs to be progressive or de-interlaced, even for Youtube. What settings are available to you? I recommend downloading Too Much Too Soon plugins (http://www.mattias.nu/plugins/) and using the smart de-interlace filter.

Martin, I have actually gotten very nice results by letting Compressor handle de-interlacing when outputting for Web (see http://www.youtube.com/watch?v=FczftPs27NY for example)