Different framerate issues

[Rafael Amador]

Compressor is able to perform two different operations:
– Standar Conversion
-Conforming
[Davide Marchesi] “Thank you guys, I must have misunderstood Rafael’s post because I was going to use Compressor but I thought that with workflow I would jeopardize my chance of synchronizing the audio.”
With Compressor you’ll have no problem as long as you keep “Duration 100%” (Standard Conversion).
Then the audio will keep at 48Khz and you won’t have no problems on syncing.

[Davide Marchesi] “So conforming with Cinema Tools is going to present me with an audio synchronization problem, but not Compressor right?”
Conforming with CinemaTools or Compressor (Duration different than 100%), you won’t be able to get things in sync because video/audio won’t play at the same speed than the audio files.
The audio on the Video files won’t be anymore 48Khz. No way to sync.
rafael

http://www.nagavideo.com

[Davide Marchesi]

Perfect. Thanks for clearing it up.

[Davide Marchesi]

After some testing, I figured that if I use Compressor to convert the 25fps footage to 23.976fps the result is acceptable, but it takes a very long time.
Toi avoid converting all my 25fps footage, but only the clips I need, would it make sense to edit my sequence with the original footage (with the two different frame rate) and only when I know what clips I’m gonna use in the final edit, convert solely them fro 25 to 23.976 fps?
Then I import the converted clips in FCP, use them to replace the original 25fps clips and export everything at 23.976fps. Does it makes sense or will I encounter problems I’m not foreseeing at the moment?

[Nick Meyers]

it could work.
but you won’t be able to use MULTICLIPS.
you’d have to use a more cumbersome method of having the clips stacked,
and cutting away what you don’t want.

then you could media mange the 25fps tracks,
run the reduced sections though compressor, and eye match them back in.

another method could be to use compressor to convert the footage, but use the FASTEST method.
or indeed you might be able to use FCP to do this.
the results will have a repeat frame every second.

with some music videos that would be a good thing!

nick

[Rafael Amador]

As Nick says.
To do multicam you need all the stuff to have the same specs.

As Nick suggest, make test with Compressor set to Fast (nearest frame).
That’s done fast. Is just about dropping one frame per second.
As he suggests, you can try that as well dropping the p25 stuff on a p23,98 sequence, but in this case, open the clips speed (leave it at 100%) an uncheck “Frame Blending”.
FC will just drop frames without reprocessing the whole picture.
rafael

http://www.nagavideo.com

[Davide Marchesi]

Cool, once again thanks for the input guys. I have moved away from the idea of the multiclip because I can’t do it with all the footage that I have anyway. I’ll probably have to synch every clip with the audio but it’s gonna be a 5-min thing so it won’t be too long hopefully. Thanks a lot again.