29.97d frame rate

[shadowboxnyc]

This is going to sound like a newbie question and I'm slightly embarassed to ask. But--most
of my work involving video is short form (commercials, promos, etc) Rarely over 60 seconds.
The NTSC standard frame rate for video (non-HD) is 29.97. The quicktime movies I am
synching to show "29.97" in the get info page. I always used 29.97 in Logic. Occasionaly I
would notice that the video would be off by a frame or 2. But always thought it was just a
quicktime thing or whoever digitized the video didn't do it right.

But after working on this project that is 3 minutes long I notice that my frames are way off
after 2 minutes or so. I look in the Logic Reference manual and it says 29.97d is the
standard and 29.97 is extremly rare. Huh? So I should have been using 29.97d all this time?
Why don't they make 29.97 the same as Quicktimes 29.97. ProTools doesn't have an option
for 29.97d. Only 29.97. I thought that was the rate I was using in Logic. But I guess I was
wrong.

Can anyone confirm this???
Thanks



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[ativity2003]

In my experience, both are equally used. I find the lower end projects
(Discovery Channel & other cable docs, some commercial work) work in
29.97drop, while higher end stuff is 29.97 non-drop. Don't know why,
but that's what I see.
The quicktimes I get are usually unreliable as to the frame rate. Try
to get a DVD and rip it yourself if possible.



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[shadowboxnyc]

I learned all about time code in my college days, and I completely forgot an important
aspect of the whole thing. The picture of 29.97 non-drop and 29.97 drop is exactly the
same. It's only the visible time code that is different. In Drop format, the first 2 frame
numbers of every minute are dropped. No actual frames are dropped. In other words,
unless the Time Code is burned in to the video it makes no difference which one you use.

I do think that something our industry needs is a Quicktime format with reliable timecode,
possibly even embedded in the file. Similar to the Broadcast Wave Format, but for video.
And would also allow compression (H.264) that maintains precise timecode.

Post by ativity2003
In my experience, both are equally used. I find the lower end projects
(Discovery Channel & other cable docs, some commercial work) work in
29.97drop, while higher end stuff is 29.97 non-drop. Don't know why,
but that's what I see.
The quicktimes I get are usually unreliable as to the frame rate. Try
to get a DVD and rip it yourself if possible.

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