As discussed in Chapter 7, audiences notice immediately when sound falls out of sync. As a result, maintaining sync is a priority during all phases of production and postproduction.
If you record audio to your DV tape, whether you record directly to the camera or route the audio through a sound mixer, the camera keeps the audio in sync with the picture by using timecode. Timecode identifies the exact location of any part of a recording in terms of hours, minutes, seconds, and frames. There are approximately 30 frames per second in NTSC video, so NTSC timecode lets you pinpoint a part of your recording down to 1/30th of a second. DV cameras automatically add matching timecode to the audio and video that you record, and when you capture your footage to a digital editing system, you capture the timecode along with it.
Get DV Filmmaking now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.