23.98 to negative cut

[Gary Adcock]

[maya30] ” am cutting a film with 24p clips but on a 23.98 sequence. Does anybody know if it’s going to create any problems when i export the EDL to negative cut? would there be a synch problem?”

No- virtually all offline for film are done in this manner, and 24p is 23.98 in video land.

Gary Adcock
Studio37
HD and Film Consultation
Chicago, IL USA

[Dom Silverio]

Gary

That is not exactly true. Yes 24 fps film will always play out 23.976. However, there is a difference between the two especially in regards to handling audio.

For example film is normally shopt at 24 fps flat and audio at 48 flat. If you bring the audio in as 48 in a 23.976 sequence you will have sync issues. Your audio must be pulldown.

Now in regards to EDL and cutlist, what you need is accurate edgecode and keycode to ensure EDLs will reflect the right information for the negative cutter.

[Maya30]

So do i need to pulldown the audio? i have a window burn so i am pretty sure i am covered as far as the key codes, will i have sound issues?

[Frank Nolan]

Was your audio transferred to the video along with the film in telecine?

[Maya30]

nope. it was imported to final cut from DAT and synced in the timeline. right now it’s 48 KHz and 16bit

[Gary Adcock]

[maya30] “nope. it was imported to final cut from DAT and synced in the timeline. right now it’s 48 KHz and 16bit”

my original comment still stands

Since your edit is 23.98 / 48khz — all is good with the way you are working, and you should be good to go.

your settings and workflow do sound correct.

Gary Adcock
Studio37
HD and Film Consultation
Chicago, IL USA

[Dom Silverio]

No Gary. He needs to pulldown his audio. His audio must be conformed to 47.952.

[Frank Nolan]

Just to clarify a few things here. Being that you are talking about a negative cut, I have assumed the project was shot on film. You did mention that you have 24p clips. This term is normally used in shooting video. So what format was the film telecined to and how ddidd you get it into FCP? If you are indeed digitizing from a tape that was transferred from film you will have to apply a pull down to your dat audio or it will not sync correctly.

[Maya30]

The film was shot on 35mm and we got Beta tape with the footage. Later on we imported all the clips and performed reverse telecine in cinematools and imported the new 24p clips into final cut pro. There is a window burn with TC and key codes. I am not sure if the DAT audio was pulled down as well. should we do it? please let me know. i called the lab that is going to do the negative cut and they said they thought it was okay. the audio is already synced with the picture in FCP, should we pull down the audio and resync everything?

[Frank Nolan]

[maya30] ” I am not sure if the DAT audio was pulled down as well.”

To find out place a clip in the viewer or timeline that is about a minute, or preferably longer, and take a very close look and see if it holds sync for the length of the clip.
With short clips it is not that noticable as video speed is only 0.1% slower than film speed but over time on longer clips it becomes an issue.
Do you have a post audio house doing the sound on the film? Will they be re-building the dialogue tracks from the dats or will you be exporting an OMF?