How do you change the video format on a MAC OSX?

I'm trying to upload a video located on my MacBook to YouTube and Photobucket.

Neither of them are working and I'm pretty sure it's because of the video format because the video didn't show up in iPhoto until I went into that thing, ahaha I don't know what it's called.

It's a white icon with an opening in the front. Anyways, you probably know what I'm talking about.

So it's in AVI format and I think it needs to be in MOV format for it to show up because my other videos that are like *name*.mov show up in iPhoto. I really want it up on YouTube or Photobucket or anything that will work.

Does anybody understand what I'm getting at?How do you change the video format on a MAC OSX?
to upload videos to youtube you would need to change them to .flv



1. First Download FFMPEGX for your MAC



2. This adds both playback preview functionality and the ability to work with MPEG-2 video.



After installation, locate the video you want to convert and drag it into the source format section of the FFMPEGX interface. Choose FLV from the dropdown menu in the Target Format section.



Once all settings are configured, hit the Encode button. FLV files don't playback natively on Mac OS X, but you can preview the final file using a video player like VLC media player.



Upload the FLV to your server using your favorite upload app or by using the upload feature of your blog software.



Best of luck everything is explained on the link below.