FORUMS: list search recent posts

24p to 29.97i. Standards Conversion for TV?

COW Forums : Adobe After Effects

<< PREVIOUS   •   FAQ   •   VIEW ALL   •   PRINT   •   NEXT >>
Matt Campbell
24p to 29.97i. Standards Conversion for TV?
on Mar 15, 2018 at 1:41:21 pm

I have some TV spots built in AE, as they're full animation. COMPs were built to 23.976p. Which we do almost always.
We have TV delivery for AIR and our normal delivery method accepts 24p ProRes files. No problemo!

However our local stations require 29.97i. With CONFORM being done in Premiere Pro for audio layback and slating, is it better to render our of AE and perform the Standards Conversion there? Here was my test settings:

AE COMP – 23.976p
Output Module: ProRes 422 HQ
Render Settings: Use frame rate 29.97.
Turn ON Field Render to Upper Field First with 3:2 pulldown set to WWWSS.

Does AE do a better job rendering this sort of thing out or is it OK to drop 24p render into Premiere Pro and do the Standards Conversion there to 29.97i on final output? I thought I read somewhere they use the same rendering engine but wasn't sure if one was better than the other. I can not tell a difference on my test. With Interlaced set on my FSI monitor, both show the proper fields rendered.

thx.

iMac 3.5 Ghz Intel Core i7
16 GB of RAM, NVIDIA GeForce GTX 780M 4096 MB
External RAID 5 in T-Bolt Chasis using eSata
BMD Decklink Studio 2, FSI BM210, KRK Rokit 5s, Mackie 802


Return to posts index

Dave LaRonde
Re: 24p to 29.97i. Standards Conversion for TV?
on Mar 15, 2018 at 2:48:14 pm

If you're working in 1920x1080 you'll be good adding the 3:2 pulldown in either application.
If the video is a different H & V dimensions there could be trouble.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


Return to posts index

Matt Campbell
Re: 24p to 29.97i. Standards Conversion for TV?
on Mar 15, 2018 at 3:56:24 pm

Yup, NTSC full HD.

Glad Premiere up'd their game.
I vaguely remember FCP 7 having issues with this.

Thx Dave. Can always count on you!

iMac 3.5 Ghz Intel Core i7
16 GB of RAM, NVIDIA GeForce GTX 780M 4096 MB
External RAID 5 in T-Bolt Chasis using eSata
BMD Decklink Studio 2, FSI BM210, KRK Rokit 5s, Mackie 802


Return to posts index


Dave LaRonde
Re: 24p to 29.97i. Standards Conversion for TV?
on Mar 15, 2018 at 4:00:08 pm

FCP couldn't deal with pulldown, either removing it or adding it.

I know how to add & remove pulldown in AE, but I have not yet had to mess with in PP. I just know that it's not supposed to be a big deal. I'd have to read up on adding pulldown in PP for broadcast delivery.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


Return to posts index

Matt Campbell
Re: 24p to 29.97i. Standards Conversion for TV?
on Mar 15, 2018 at 4:05:39 pm

Dito.

iMac 3.5 Ghz Intel Core i7
16 GB of RAM, NVIDIA GeForce GTX 780M 4096 MB
External RAID 5 in T-Bolt Chasis using eSata
BMD Decklink Studio 2, FSI BM210, KRK Rokit 5s, Mackie 802


Return to posts index

Spencer Tweed
Re: 24p to 29.97i. Standards Conversion for TV?
on Mar 15, 2018 at 9:43:35 pm

I had to do this recently for a broadcast project as well. I know this sounds ridiculous but going from 23.976 to 29.97 is a problem, however going from true 24p to 29.97 is technically accurate with a 3:2 pulldown. Check out the math on wikipedia: "3:2 pulldown".

Not sure on premiere, but I was doing this from AE to Avid MC. Avid is extremely picky, whereas premiere tends to just do things in the background and not really tell you about it (which can almost be worse sometimes). However I definitely trust premiere more than Avid...

- Spencer


Return to posts index


Chris Wright
Re: 24p to 29.97i. Standards Conversion for TV?
on Mar 17, 2018 at 1:46:11 am

i think wiki is a little vague. they say to slowdown. all dvd's are 23.976 with a pulldown to 29.97.


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2018 CreativeCOW.net All Rights Reserved
[TOP]