Re: Utility to merge DSLR clips?

For HDV or most AVC formats, you can just concatenate the files. They're all based on the MPEG-2 transport stream format, which is why this works. Of course, for AVC, you don't want to go joining different formats.

For the rare camera that does MP4 file wrappers, the freeware tool YAMB works pretty well. YAMB also looks to work pretty well with the typical Canon AVC file, anyway (AVC in a Quicktime wrapper), though the output will be MP4, not MOV/Quicktime. They're very similar; the MP4 file wrapper format was derived from Quicktime; most tools that support Quicktime also handle MP4 just dandy.

-Dave