Avoiding timecode breaks

on Wednesday, April 30, 2008


Each frame of video is identified using a number called a timecode. When you edit video on your computer, timecode identifies the exact places where you make edits. On your camcorder, a timecode indicator tells you how much video has been recorded on the tape. This indicator usually shows up in the camcorder’s viewfinder or the LCD panel. A typical timecode looks something like this:

00:07:18:07

This number stands for zero hours, seven minutes, eighteen seconds, and seven frames. If you have a 60-minute tape, timecode on that tape probably starts at 00:00:00:00 and ends at 00:59:59:29. In some cases, however, the timecode on a tape can become inconsistent. For example, suppose you record one minute of video, rewind the tape 20 seconds, and then start recording again. Depending on your camcorder, the timecode might count up to 00:00:40:00 and then start over at zero again. An inconsistency like this is called a timecode break. A timecode break is more likely to occur if you fastforward a tape past a blank, unrecorded section and then start recording again. When you capture video from a digital camcorder into your computer, the capture software reads the timecode from the tape in your camcorder. If the software encounters a timecode break, it will probably stop capture and be unable to capture any video past the break.
The best way to avoid timecode breaks is to make sure you don’t shuttle the tape (fast-forward or rewind it) between recording segments. An alternative approach is to pre-timecode your tapes before shooting. If you do have to rewind the tape — say, someone wants to see a playback of what you just recorded — make sure you cue the tape back to the end of the recorded video before you start recording again. Many camcorders have an end-search feature that automatically shuttles the tape to the end of the current timecode. Check your camcorder’s documentation to see whether it has such a feature.