Multicam Frame Size Error at DVinfo.net

Dana Salsbury · May 2nd, 2009, 11:35 AM

I can't get FCP Multicam to work due to a frame size error. One clip is 1920 x 1080 and the other clip is 1440 x 1080. They are both AVCHD. Is there anything I can do?

Jun Na · May 3rd, 2009, 12:15 PM

I have the same problem. working on clips from HDV (1440 x 1080) and AVCHD (1920 x 1080) in multi-cam sequence.

Dana Salsbury · May 3rd, 2009, 12:23 PM

It seems like there should be a way to downconvert the field settings so multicam would see them as identical.

Jun Na · May 3rd, 2009, 03:44 PM

I can transcode AVCHD to .mov using 10-bit CineForm Intermediate and resize the frame size to see if it works in multi-cam sequence.

Robert Lane · May 3rd, 2009, 07:03 PM

Don't confuse Mulit-cam for multi-format in a single timeline.

Multi-cam in FCP assumes you're using the same format/codec type between inputs allowing it to switch easily from one input to another. Only a hardware switcher with format-cross conversion will allow differing inputs to be homogenized into a single format.

It's best to make your mis-matched frame size conversions prior to a multi-cam session, this will eliminate the problem.

Dana Salsbury · May 3rd, 2009, 09:14 PM

Hi Robert,

>It's best to make your mis-matched frame size conversions prior to a multi-cam session, this will eliminate the problem.

Is this possible without exporting and importing? Can I change the setting on the clip?

Robert Lane · May 4th, 2009, 09:24 AM

The simplest method is to use Log & Transfer and transcode one frame size to match the other during ingest; which way to go is entirely up to you since you won't see any difference in image quality between the two.

Jun Na · May 4th, 2009, 03:35 PM

I did transcode AVCHD and resize it to 1440 using Apple Intermediate Codec - which I used for HDV clip. Now it works great in multi-cam sequence. All the clips should be the same size/codec in multi-cam sequence. Thanks!

May 2nd, 2009, 11:35 AM	#1
Dana Salsbury Major Player Join Date: Oct 2006 Location: Phoenix, AZ Posts: 859	Multicam Frame Size Error I can't get FCP Multicam to work due to a frame size error. One clip is 1920 x 1080 and the other clip is 1440 x 1080. They are both AVCHD. Is there anything I can do? __________________ www.LegacyHDV.com Weddings \| Corporate \| HMC150s \| FCPX \| Encore \| Lion

May 3rd, 2009, 12:23 PM	#3
Dana Salsbury Major Player Join Date: Oct 2006 Location: Phoenix, AZ Posts: 859	It seems like there should be a way to downconvert the field settings so multicam would see them as identical. __________________ www.LegacyHDV.com Weddings \| Corporate \| HMC150s \| FCPX \| Encore \| Lion

May 3rd, 2009, 09:14 PM	#6
Dana Salsbury Major Player Join Date: Oct 2006 Location: Phoenix, AZ Posts: 859	Hi Robert, >It's best to make your mis-matched frame size conversions prior to a multi-cam session, this will eliminate the problem. Is this possible without exporting and importing? Can I change the setting on the clip? __________________ www.LegacyHDV.com Weddings \| Corporate \| HMC150s \| FCPX \| Encore \| Lion

May 3rd, 2009, 12:15 PM	#2
Jun Na New Boot Join Date: Apr 2009 Location: Toronto, Ontario Posts: 14	I have the same problem. working on clips from HDV (1440 x 1080) and AVCHD (1920 x 1080) in multi-cam sequence.

May 3rd, 2009, 03:44 PM	#4
Jun Na New Boot Join Date: Apr 2009 Location: Toronto, Ontario Posts: 14	I can transcode AVCHD to .mov using 10-bit CineForm Intermediate and resize the frame size to see if it works in multi-cam sequence.

May 3rd, 2009, 07:03 PM	#5
Robert Lane Go Go Godzilla Join Date: Nov 2004 Location: Scottsdale, AZ USA Posts: 2,823 Images: 15	Don't confuse Mulit-cam for multi-format in a single timeline. Multi-cam in FCP assumes you're using the same format/codec type between inputs allowing it to switch easily from one input to another. Only a hardware switcher with format-cross conversion will allow differing inputs to be homogenized into a single format. It's best to make your mis-matched frame size conversions prior to a multi-cam session, this will eliminate the problem.

May 4th, 2009, 09:24 AM	#7
Robert Lane Go Go Godzilla Join Date: Nov 2004 Location: Scottsdale, AZ USA Posts: 2,823 Images: 15	The simplest method is to use Log & Transfer and transcode one frame size to match the other during ingest; which way to go is entirely up to you since you won't see any difference in image quality between the two.

May 4th, 2009, 03:35 PM	#8
Jun Na New Boot Join Date: Apr 2009 Location: Toronto, Ontario Posts: 14	I did transcode AVCHD and resize it to 1440 using Apple Intermediate Codec - which I used for HDV clip. Now it works great in multi-cam sequence. All the clips should be the same size/codec in multi-cam sequence. Thanks!