Final Cut 25p to 23.98p at DVinfo.net

James Venturi · February 12th, 2009, 05:04 AM

Does anyone know how final cut changes 25p to 23.98p? Does it just drop one of the frames or is there something more complicated going on?

Shaun Roemich · February 12th, 2009, 09:03 AM

I believe frame rate changes involve frame blending.

Noah Kadner · February 12th, 2009, 09:04 AM

Drops a frame I believe.

Noah

James Venturi · February 16th, 2009, 06:59 PM

I did some tests using the EX1 with individual frame advance and when footage is recorded at 1080p25, and dropped into a 1080p23.98 ProresHQ sequence, it drops frame 13 to achieve this. There is no frame blending.

If you choose conform 25p to 24p in the tools menu, it will change the media and turn frame 25 to frame 1 of the next second, making your footage that much longer. To do this, first you have to convert the footage to ProResHQ.

We have tested this and with the PDW700 also and so far we don't miss frame 13 and it looks amazing.

David Knaggs · February 16th, 2009, 09:22 PM

I change 23.98p to 25p on occasion and prefer to use Cinema Tools to change the frame rate. In Cinema Tools it simply speeds it up by about 4-5% (or slows it down if you're going the other way). I found it less satisfactory using the FCP sequence itself to change the frame rate. With Cinema Tools you keep all of your frames. With FCP, it probably adds or subtracts a frame, as James indicated.

I guess it depends on which method you prefer.

James Venturi · February 17th, 2009, 04:09 AM

What about pitch? How does cinema tools deal with that?

David Knaggs · February 17th, 2009, 05:46 AM

Cinema Tools makes an automatic adjustment for pitch. But it's best to experiment with both methods and go with the one you find most aesthetically pleasing.

February 12th, 2009, 05:04 AM	#1
James Venturi Regular Crew Join Date: Sep 2008 Location: NYC Posts: 81	Final Cut 25p to 23.98p Does anyone know how final cut changes 25p to 23.98p? Does it just drop one of the frames or is there something more complicated going on?

February 12th, 2009, 09:03 AM	#2
Shaun Roemich Inner Circle Join Date: Sep 2002 Location: Vancouver, British Columbia (formerly Winnipeg, Manitoba) Canada Posts: 4,088	I believe frame rate changes involve frame blending. __________________ Shaun C. Roemich Road Dog Media - Vancouver, BC - Videographer - Webcaster www.roaddogmedia.ca Blog: http://roaddogmedia.wordpress.com/

February 16th, 2009, 06:59 PM	#4
James Venturi Regular Crew Join Date: Sep 2008 Location: NYC Posts: 81	Figured it out. I did some tests using the EX1 with individual frame advance and when footage is recorded at 1080p25, and dropped into a 1080p23.98 ProresHQ sequence, it drops frame 13 to achieve this. There is no frame blending. If you choose conform 25p to 24p in the tools menu, it will change the media and turn frame 25 to frame 1 of the next second, making your footage that much longer. To do this, first you have to convert the footage to ProResHQ. We have tested this and with the PDW700 also and so far we don't miss frame 13 and it looks amazing.

February 17th, 2009, 04:09 AM	#6
James Venturi Regular Crew Join Date: Sep 2008 Location: NYC Posts: 81	Cinema Tools method What about pitch? How does cinema tools deal with that?

February 12th, 2009, 09:04 AM	#3
Noah Kadner Better than Halle Berry Join Date: Feb 2004 Location: Los Angeles, CA Posts: 435	Drops a frame I believe. Noah

February 16th, 2009, 09:22 PM	#5
David Knaggs Major Player Join Date: Apr 2006 Location: Melbourne, Australia Posts: 826	I change 23.98p to 25p on occasion and prefer to use Cinema Tools to change the frame rate. In Cinema Tools it simply speeds it up by about 4-5% (or slows it down if you're going the other way). I found it less satisfactory using the FCP sequence itself to change the frame rate. With Cinema Tools you keep all of your frames. With FCP, it probably adds or subtracts a frame, as James indicated. I guess it depends on which method you prefer.

February 17th, 2009, 05:46 AM	#7
David Knaggs Major Player Join Date: Apr 2006 Location: Melbourne, Australia Posts: 826	Cinema Tools makes an automatic adjustment for pitch. But it's best to experiment with both methods and go with the one you find most aesthetically pleasing.