Convert 23.976 fps to 24 fps

Anything and everything to do with DCP-o-matic.
dBLux
Posts: 3
Joined: Fri Feb 10, 2017 1:29 am

Convert 23.976 fps to 24 fps

Post by dBLux »

I am creating a mass of DCPs for a short film festival and of course a number of them arrive with a frame rate of 23.976 fps. I have successfully exported these in DOM to 24fps DCPs and they play just fine BUT their duration is the same as the original material - to the parts of a second.

How can this be? Surely they should just a tad shorter (by 1 second per 16 minutes 40 seconds of content - if my maths is correct).

No big issue, just a bit of confusion.

Now that DOM handles 5.1 audio well its truly fab!!
Carsten
Posts: 2804
Joined: Tue Apr 15, 2014 9:11 pm
Location: Germany

Re: Convert 23.976 fps to 24 fps

Post by Carsten »

Maybe they are just flagged the wrong way. Also, for e.g. a 10min short, the difference is just half a second - that is 12-14 frames shorter at best. Some apps may apply rounding around full seconds.

I am sure, if you load the ingoing and outgoing audio into an audio editor, you will see the small difference.

- Carsten
dBLux
Posts: 3
Joined: Fri Feb 10, 2017 1:29 am

Re: Convert 23.976 fps to 24 fps

Post by dBLux »

Carsten,

Yes it is as you say. Turns out that Premier Pro "runs" all 23.976fps movies at 24fps without telling/asking as do many other players.

The venerable Quicktime gets it pretty close however.

Thanks for a great app.

Alan Butterfield