|
|
Posted by mmaker@my-deja.com on 06/20/06 10:32
Gary Eickmeier wrote:
> The audio is recorded as digital information right in the same track as
> the video. If the video plays back fine, even at LP speed, I just want
> to know what happened to the audio.
And, uh, how do you know 'the video plays back fine'?
When playing back DV, if the deck finds a corrupt block in the video,
it replaces that block with the video from the previous frame to try to
hide the error. If the camera is stationary, there's no movement in
that part of the frame, and there are no lighting changes, you could
potentially be losing 80% of the video data but not notice because
those blocks were almost identical to the earlier frames.
With the audio, on the other hand, there's no way to replace a corrupt
block... if the error correction can't fix the dropout then the deck
just gives you a frame of silence.
Mark
Navigation:
[Reply to this message]
|