FORUMS: list search recent posts

Combining 24 fps with 30 fps on a timeline?

COW Forums : Apple Final Cut Pro Legacy

<< PREVIOUS   •   FAQ   •   VIEW ALL   •   PRINT   •   NEXT >>
Vic Noseworthy
Combining 24 fps with 30 fps on a timeline?
on Apr 3, 2014 at 3:39:34 pm

Hi, folks!
I have a job coming up where I will likely be mixing 24 fps with 30 fps. I've never done this before, and am wondering what's involved. Do I need to convert one to the other before editing, so that both are the same frame rate? Or can I simply drag the mixed clips onto the timeline and go ahead and edit? FYI: I'm using FCP7. Thanks very much for your kind assistance!
Sincerely,
Vic


Return to posts index

Shane Ross
Re: Combining 24 fps with 30 fps on a timeline?
on Apr 3, 2014 at 3:59:26 pm

[Vic Noseworthy] "Do I need to convert one to the other before editing, so that both are the same frame rate?"

Yes. Choose what frame rate you want to end up delivering, convert the other frame rate to that format. Know that it is far easier, and better looking, to convert 24 to 30 interlaced. Frame are split between fields and it looks smoother. This is how films are transferred to tape, and aired on your TV (they are shot 24, but air 30).

[Vic Noseworthy] "Or can I simply drag the mixed clips onto the timeline and go ahead and edit?"

Nope. FCP does a horrible job of mixing frame rates on the timeline. Proper pulldown isn't added, nor removed to make it look good. Shooting multiple frame rates is something best avoided if possible.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


Return to posts index

Vic Noseworthy
Re: Combining 24 fps with 30 fps on a timeline?
on Apr 4, 2014 at 3:34:34 pm

Thanks so much for your help, Shane. I will be converting some 24 fps footage to 30 fps, combining it with true 30 fps footage, and delivering the final video to the client as 30 fps. Do you know if MPEG Streamclip will do the conversion from 24 to 30? Or, another program?
Thanks again!
Vic


Return to posts index


Shane Ross
Re: Combining 24 fps with 30 fps on a timeline?
on Apr 4, 2014 at 4:03:22 pm

[Vic Noseworthy] "I will be converting some 24 fps footage to 30 fps, combining it with true 30 fps footage"

TRUE 30fps? Not 29.97? Why true 30? That's a very non-standard frame rate. DVDs, TV...BluRay...those play 29.97fps.

[Vic Noseworthy] " delivering the final video to the client as 30 fps."

As a digital file? DVD? BluRay? Tape?

[Vic Noseworthy] "Do you know if MPEG Streamclip will do the conversion from 24 to 30? Or, another program?"

You need to use Compressor for this:

23.98 to 29.97 via Compressor:

1. Drop clips you want to convert into Compressor

2. In Compressor, select your video then right click and choose NEW TARGET WITH SETTING > APPLE > FORMATS > QUICKTIME > APPLE PRORES 422 (HQ). Or pick whatever codec you like to work with.

3. Click on that newly created compression setting to open it in the Inspector window. Click the Encoder tab. Click the Video: (Settingsā€¦) button. Make the frame rate 29.97. Check the interlaced box. Set it's drop down menu to Bottom field first. Click OK.

4. Click the Frame Controls tab. Set Frame Controls to On. Set Output Fields to Bottom first. Leave Deinterlace on Fast. Leave Adaptive Details checked. Leave Rate Conversion set to Fast. Leave the Set Duration to: on 100% and make sure it's radio button is selected and NOT the "so source frames play at 29.97 fps" button.

5. Make changes to the Filters or Geometry sections as needed. Those settings listed above are the ones critical to getting the proper 3:2 pulldown added.

6. Submit the compression, then bring the resulting video back into Final Cut Pro. Place it in a 29.97 timeline and make sure you watch it on an NTSC monitor to verify that it looks good. If you step through it frame-by-frame you should see the familiar pattern of 2 split/interlaced frames followed by 3 whole frames. This is a very important step. I tried many solutions that looked OK playing back on the computer monitor, but looked terrible on the NTSC monitor.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


Return to posts index

Vic Noseworthy
Re: Combining 24 fps with 30 fps on a timeline?
on Apr 5, 2014 at 11:19:29 am

Hey, Shane. Thanks so much! Very helpful!
Also, I misspoke. I didn't mean 'true 30' fps; I was referring to the footage shot originally at 29.97, which needs no conversion, as compared to the converted footage (shot at 23.98 fps and converted to 29.97). The former I 'loosely' referred to as 'true 30' (with the latter as 'converted 30').
Thanks for all your help! Very much appreciated!
Vic


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]