The new generation of tapeless camcorder stores video as ordinary computer files—on DVD, hard drive, or memory card—that you can copy to your Mac and edit in iMovie. But what are those files? Every computer document is some format, whether JPEG (the usual format for photos) or TXT (text files). What format are these video files?
Some digital camcorders, especially old ones, record in formats called MPEG-1, MPEG-2, and MPEG-4. (The abbreviation stands for Motion Picture Experts Group, the association of geeks who dream up these standards.) iMovie '08 recognizes and imports MPEG-2—usually. Unfortunately, there are multiple flavors of MPEG-2, and iMovie doesn't recognize all of them.
iMovie can also work with the movies created by most digital still cameras, like. MOV, .AVI, and MPEG-4 files. Here again, though, your mileage may vary.
It's worth repeating: If you're tempted to buy a certain camcorder, but you're not sure if iMovie works with it, Google it.
The good news is that iMovie '08 also recognizes AVCHD, which is already the most popular file format for high-definition tapeless camcorders. (It stands for Advanced Video Coding/High Definition, and yes, it's an annoying acronym. Do they really think they're going to make video editing more attractive by dreaming up names like this?)
Anyway, AVCHD is a high-def format concocted by Sony and Panasonic in 2006, and is now available on camcorders from Sony, Panasonic, Canon, and Samsung. This format offers roughly the same video quality as MPEG-2 or MPEG-4, but takes up even less space on your camcorder's memory card, miniDVD, or hard drive.
As it turns out, AVCHD is the same as H.264, which is the video format as Blu-ray high-definition DVD discs (and also the format of videos from the iTunes Store).That's a handy feature for people who own both an AVCHD camcorder that records onto miniature DVDs and a Blu-ray DVD player (or Playstation 3), because you can pop the DVD right out of the camcorder and into the Blu-ray player to play on your TV.
That's the good news. The bad news is that AVCHD still takes up a lot of space; a DVD camcorder of this type holds only 15 minutes of best-quality video per disc. (On the newer double-sided discs and camcorders that accept them, you get 27 minutes.)