I did an experiment on our church's camcorder (Sony Handycam HDR-CX380) recently to test whether it was the source of a time inaccuracy between our video recordings and PC audio recordings of sermons (see Identifying source of audio drift between camcorder and recording PC).
What I discovered is that video files recorded by the camcorder are about 0.0036% shorter than a stopwatch measurement of the same events. (Example: 3:56:52.81 of stopwatch time led to a file with duration 3:56:52.30.) It's not noticeable when watching the footage on its own, but when I try to match a high-quality audio recording to the video, the bad lip-syncing is noticeable.
Is this kind of inaccuracy in recording times typical for consumer-grade camcorders? Or is our camcorder "broken" even by consumer-grade standards?