Thank you Dennis.
> My comments were about the origin of the need for DF, NOT the
> differences between DF and NDF. Therefore, we are BOTH correct. I
> described the difference between 29.97fps NTSC video and exact 30fps
> video. There are 108 fewer ACTUAL frames in NTSC color video (running
> at 29.97fps) than there are in exact 30fps video (which used to be B&W
> video in the US and now is hard to find here). NTSC 29.97fps is
> actually running at a slower frame rate than 30fps video (hence the
> frame rate designation of 29.97). As I said, there are 108 fewer
> frames in 29.97fps than there are in 30fps video. In 30fps video, an
> hour-long program would be an hour of TC without any compensation
> needed. But if you run the video at 29.97fps, you'll have fewer frames
> and of course fewer frame numbers, making it to be less than an hour of
> TC numbers once you've reached an hour of actual clock time. Since the
> point is to make the time code numbers equal accurate clock time,
> numbers (not frames) must be skipped when using 29.97fps NTSC video in
> order to get DF time code to accurately reflect real clock time.
>
> Dennis Degan, Video Editor-Consultant-Knowledge Bank
> NBC Today Show, New York
>
>
------------------------------------
Search the offical complete Avid-L archives at:
http://archives.bengrosser.com/avid/
Avid L2, Where the Answers are.Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Avid-L2/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/Avid-L2/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:Avid-L2-digest@yahoogroups.com
mailto:Avid-L2-fullfeatured@yahoogroups.com
<*> To unsubscribe from this group, send an email to:
Avid-L2-unsubscribe@yahoogroups.com
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
No comments:
Post a Comment