DVCPRO50 24p still is interlaced

[Ryan Wyler]

I figured it out. Jeash I can’t believe what the problem was…

Since I was editing in a 29.97 timebase with the 24p (NORMAL) footage all I had to do was set the FIELD DOMINANCE to “Upper (odd)”. I thought I tried this before, but I might have just tried it with the footage I tried to do REVERSE TELECINE on.

So to sum up. With 24p NORMAL, you have to edit on a 29.97 timebase, you cannot reverse telecine, and you have to have a field dominance set. If you don’t set the field dominance it looks pretty bad, every 3rd and 4th frame is interlaced. With the field dominance set to UPPER, every 5th frame is basically a duplicate of the 4th frame, which is how 24p should look on a 29.97 timebase.

[Jeremy Garchow]

This makes no sense. I’m still confused. How were you editing in a 23.98 timeline if you digitized 29.97? Did you have to render every clip in order to edit?

You are using Cinema Tools wrong. If you digitized NTSC 29.97 dv50, then your footage will have a lower field dominance. You can pick the A Frame just like was posted earlier. Again, why are you trying to extract the pulldown frames?

Jeremy

[Jeremy Garchow]

By the way, you know that even when you reverse telecine, you are going to have an interlaced frame in the cadence right?

The C Frame will be from the same original frame at two different points in time.

You should have a look here, it’ll explain what you are seeing:

https://www.adamwilt.com/24p/index.html#24pRecording

Jeremy

[Ryan Wyler]

So what is causing THREE PROGRESSIVE FRAMES and TWO INTERLACED FRAMES? I don’t understand that.

A B C d e

ABC are progressive, and D & E are interlaced. Do I have to redump everything with a different setting or is there something that can resolve this issue?

[Jeremy Garchow]

There are no e frames. you are still seeing tow interlaced frames after the reverse telecine? Is that what you’re saying? If you are then you either chose the wrong A Frame, or your settings are wrong in Cinema Tools.

Did you have the standard upper/lower button checked?

[Ryan Wyler]

The footage was captured DVCPRO50 24p NORMAL, not advanced. From everything I have read you cannot reverse telecine 24p NORMAL footage. Now I don’t know why, but it just doesn’t seem to work right.

I am editing in a 29.97 timebase in FCP using the DVCPRO50 24p normal footage. I am seeing what appears to be 5 frames. 3 progressive, 2 interlaced frames. I posted a screenshot of Cinetools, 10 sequential frames, and a small clip of the DVCPRO50 footage in this directory looking for why this stuff isn’t working like everyone says it should.

https://bridgetone.com/tmp/24p/

[Jeremy Garchow]

Reverse telecine is what you do for footage with a 3:2 pulldown. That is the point. Of course you can use this with 24p Normal footage.

So you open a clip in Cinema Tools, then what do you do? Tell me your settings and steps. We’ll get through this yet.

From your cinema tools screen grab, you are definitely NOT on an A Frame which is probably why you aren’t getting the results you need. can you take another screen grab of the whole CT screen? I can’t see all of your settings over there.

Jeremy

[Ryan Wyler]

I have now tried EVERY OPTION yet again for the 6th time. I have my CT options screen shots at this location:
https://bridgetone.com/tmp/24p/ct/

No matter what I do it ends up looking TERRIBLE on a DVD or even in quicktime exports on the computer.

on a 23.98 timebase I Reverse Telecined the dvcpro50 footage down to 23.98 and every 4th frame is INTERLACED. From what I read this is expected. I don’t understand that. How is 24p supposed to be ‘three frames progressive and one interlaced frame’? That doesn’t make ANY SENSE. I tried picking different ‘A’ frames by moving to what I thought the ‘A’ frame was and exported, didn’t make a difference. I tried selecting varoius other frames as A frames, didn’t make a difference. I think cinema tools is picking the wrong A frame, but won’t let me select a different one no matter what I do.

This is killing me. I wish there was someone who could actually try to download that small clip I uploaded to my site and reverse telecine it, and see what I did wrong and try to get it progressive all the way across.
Small Clip: https://bridgetone.com/tmp/24p/

Anyone who solves my problem, I’ll send them a $50 iTunes Gift Certificat.

[Jeremy Garchow]

I’ll try it tomorrow when I’m at the studio.

Jeremy

[Ryan Wyler]

Awesome, thanks!

Answer me this. How should footage that was captured 24p NORMAL (29.97fps) and reverse telecine look on a 23.98 timebase sequence? Should it be ALL progressive frames OR should it be three progressive frames and then ONE interlaced frame?