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23.98 to 25 - Duration Question

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Jeffrey Cornell
23.98 to 25 - Duration Question
on Aug 2, 2013 at 2:54:09 pm

So we've got a show that we're delivering in 23.98 but also have to deliver across seas, so yesterday we had our show converted from 23.98 to 25. Our original RT at 23.98 was 43:49. Obviously, I understand converting to 25 makes it a bit longer as it's now looking like 43:51:16. Is there a way to get this to the original RT specified? I haven't done hardly anything with PAL/25 conversions so any advice would be great.

Thanks!


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Jeffrey Cornell
Re: 23.98 to 25 - Duration Question
on Aug 2, 2013 at 3:14:53 pm

Also, I got two QT files back one labeled "SLOWPAL_50i" and "50i_ALCHEMIST" Which one should I be using?


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Dave LaRonde
Re: 23.98 to 25 - Duration Question
on Aug 2, 2013 at 4:38:44 pm

Check the running time of that "50i_ALCHEMIST" file: I bet it's just right.

The post house apparently made two versions. On one they CONFORMED the 23.976 frame rate to 25, which sped up the video a tiny bit. On the other, they CONVERTED the 23.976 frame rate to 25, which left it at the same running time.

Pretty nice post house to do that, if you ask me.

Dave LaRonde
Former Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Rafael Amador
Re: 23.98 to 25 - Duration Question
on Aug 3, 2013 at 1:42:03 pm

[Jeffrey Cornell] " Obviously, I understand converting to 25 makes it a bit longer as it's now looking like 43:51:16."
Wrong.
A proper time-base conversion should keep the same duration.
If the movie have been conformed from 23,98 to 25fps, the duration will be a 4,25% shorter.
You are not checking the duration with QT Player, don't you?
rafael


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