[Frank Kruse]

Originally Posted by SZE

Thanks for all the replies.

We are starting with a trailer of the film, so a few days ago I received a QuickTime MJPEG 720p @ 23.976 fps. This was imported into a Pro Tools session also set to 23.976 fps, and when the OMF was imported into Pro Tools, everything sync up, so I presume the OMF is also 23.976?

Now I have some more doubts and am still a bit confused about what is actually happening here.

When I record my master in Pro Tools ready to pass on pic. editorial, the new audio files created show up in the Workspace as 48kHz files. Doesn't 48kHz equate to 24 fps, and shouldn't my new files be 47,952 files as my session is running at 23.976 fps?

My principal concern is how my master audio is going to sync up / playback in FCP, as the film is being kept at 23.976 fps right up until deliverables / printmaster.

What do I need to do to output a file for them that will sync up and will not be pulled up/down or messed about with in any way by FCP?

Thanks

48k doesn´t equate to 24fps. It equates to what ever the original camera shooting speed was, assuming sound was recorded at 48k. It´s all relative. If your film was shot at 4 fps and release format is 4fps then 4fps is 100% speed running in sync to 48k audio. a digtal audio recorder captures at a given sample rate and wether it will run in sync or not depends on the playback clock i.e. sample-frequency.

Again: In PT the TC ruler is only a counter. Nothing else. Unless you set the session setup to pull up/down it will run at 48k no matter what TC you chose.

Like I said before: in the digital world sound speed it set by sample frequency not TC.


If your film was shot at 23.98 and post is done at that speed and release format is also 23.98 you don´t need to pull anything up or down.

You could even set your session to 25fps and everything will still play back in sync. only the TC in picture will not match PT´s TC ruler.