JES deinterlace

[Sean Oneil]

[Mike Mallen] “I’ve tried to run an inverse telecine on a particular media file, and the exported result has an audio slip. I lined it up in Final Cut to compare it to the original file, the audio isn’t actually the issue, the video is what is getting progressively shorter as the clip progresses.”

You are converting to 24.00 or 23.98? That could explain the audio drift.

[Mike Mallen] “I’m trying to run a deinterlace, then convert the 30p progressive footage to 24p with quicktime conversion (which I think will effectively do the same thing?). Any suggestions, comments or advice?”

That won’t work. Final Cut won’t know which frames are the dupes. So you essentially have a 1 in 5 chance of FCP getting it right. Recently I recommended someone do this (maybe you read that?) because their footage was 18fps. Your case is different.

JES is a great bailout tool, and it’s great for dealing with old footage. But if you shoot @ 24, then there’s no reason not to capture and edit @ 24.

Sean

[Mike Mallen]

That was actually my post, thanks again for responding. This is for the same project, but different camera.

The issue with capturing at 24fps is that the DVX100B basically records as if it were film, adding the telecine as it lays it to DV. Which means I have to capture at 29.97, then perform a reverse telecine.

You were correct in saying the quicktime conversion wouldn’t work. This is what I believe is happening…

JES is removing a few of the frozen frames at the beginning and end of the takes (when the camera was stopped and there was a cadence break)

I’m going to trash the JES log and preferences and see if it helps. The strange thing is that it happened with one media file, then I tried it again and it worked fine. On a side note, how would you recommend exporting (direct DV NTSC or Quicktime)?

[Sean Oneil]

[Mike Mallen] “The issue with capturing at 24fps is that the DVX100B basically records as if it were film, adding the telecine as it lays it to DV. Which means I have to capture at 29.97, then perform a reverse telecine.”

If you use a capture card (Kona or Decklink) you can remove 3:2 pulldown on ingest (you just need to identify the “A frame”). If all you have is Firewire, I’d still recommend removing the pulldown (using Cinema Tools) prior to editing anything.

I have had some unusual, albeit rare issues with JES when I use ProRes. Some strange issues where the QT file it creates causes problems with Compressor. I’ve never had a problem using uncompressed footage with it and if I run into an issue, I just export it as uncompressed. Haven’t tried it with DV, sorry.

I would export QT DV, not a raw .DV file.

Sean

[Jeremy Garchow]

Compressor has decent rev telecine capabilities as well.

Jeremy