Interlaced lines in my 1080p footage?

[Jeremy Garchow]

You want rev telecine. You have to kind of do this by hand. What you have to do is find an ‘a’ frame in each piece of footage. The A frame is the progressive frame in the middle of two other progressive frames. The cadence should be 3 progressive and 2 interlaced. The a frame is the second progressive frame in that cadence. So arrow through until you find your first a frame, leave the playhead parked there and then click rev telecine. You should change the conform to rate to 23.98 and click the standard upper/lower button there too (these settings may change as I forget which works and doesn’t and I don’t have any 1080i media with me now). When the new media pops up (it should be the same name except it should have a .rev suffix) arrow through it and see if you have any interlaced frames. If you still have interlaced frames, try turing the standard upper/lower off. Post back if you are having troubles as I’m going off of memory here.

Jeremy

[Pierre]

JeremyG,

Thank you very much for your detailed instructions!

It’s difficult to find the “a” frame (or the second progressive frame) in the footage? The window/viewer where footage is played in the Cinema Tools program is fairly small… so I can’t see the interlaced lines. Is there another way to tell that I’m on the right frame?

Also, I’m not sure if I understood one point. Does it matter where in the clip the playhead is parked? For example if perhaps it happens to be easier for me to see the interlaced lines at the end of the clip (allowing me to identify the “a” frame) will the reverse telecine still work?
thanks,
Michael

[Jeremy Garchow]

No it’s not too difficult to find an a frame, especially with footage that has higher motion. Low motion video can be tough. It doesn’t matter if you parked on the first A frame or the last A frame, as long as you are on an A frame, CT will figure it out. You should see interlace no problem as the CT window displays fields readily.

Jeremy

[Pierre]

So then the it does have to be parked on one of the ‘a’ frames?
I can’t just open the clip and go? (I tried that several times and it removed the interlaced lines)… I don’t know, perhaps I just got lucky.

The problem is many of our shots are “talking heads” … so there is very little motion.

thanks,
Michael

[Jeremy Garchow]

It has to be in a frame. If they are talking heads, look at their mouth as it’s usually always moving.

Jeremy

[Jeremy Garchow]

[JeremyG] “It has to be in a frame.”

Sorry, that’s a typo. It has to be an A frame. You have to parked on an A frame.