Originally posted by trifo
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As David alluded to, the AVCHD structure has more than just the video files, and these extra sidecar files hold some camera metadata and also give software instruction on how to virtually stitch the files together when playing back a clip that exceeds the file size limitation of the camera's file system. Often these clips can have areas where a couple of frames coexist in sequential files due to the the long GOP compression spanning files. A simple join is not an easy task in these instances without causing a glitch in the resulting file. This is why I suggested a trancode as a way to stitch them together correctly. Most camera manufacturers make a piece of software to combine this copy and transcode into a single step with files from their own cameras, but not other cameras, as each camera manufacturer has their own proprietary way of writing the sidecar files.
I am not saying that this is the way it has to be, I am just saying that this is the way it is.
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