interlacing 24p and 30p for network delivery

[weasel-d]

We are shooting a couple tv series and the network's production guidelines are 1080i 30 and 60i. We are shooting 24p and editing in premiere. Editing in a 24p sequence and exporting at 1080i 30 looks horrible. Does adobe automatically apply pull-down if you work in a 29.97 sequence and would this look better?

 

[arniepix]

1080i 30 is 60i. 30 interlaced frames per second of 1080 is 60 fields per second.

How do you monitor your edit? Do you have a broadcast monitor connected to a capture card? That lets you see these issues in real time as you edit.

Most NLEs will not ordinarily handle 24p in a 60i timeline that well. You should probably cut in a 24p timeline, export a 24p master and then convert that to 60i. How are you delivering to the network?

 

[Nate Haustein]

This is my process and it provides excellent results. Not sure if you have access to compressor but I assume the concepts would at least be similar: https://forums.creativecow.net/thread/20/869678

 

[David Jimerson]

If they want "1080i 30," then they want 60i.

You can export a 24p sequence as 1080/60i and it shouldn't be a problem.

You can't, however, export as 1080/30p and NOT have a problem, because 24p footage converts horribly to 30p.

Here's yet another example of why they need to STOP calling interlaced video "30 frames per second."

 

[David Jimerson]

Most NLEs will not ordinarily handle 24p in a 60i timeline that well.

Premiere does, Vegas does, Edius does. FCP and Avid do not.

That said, if your footage is 24p, you should be editing on a 24p timeline. And yes, exporting a 24p file first is better, because it preserves 24p motion in your transitions, text, or anything you animate.