Pluraleyes with Multiclip at DVinfo.net

Pete Cofrancesco · May 12th, 2011, 09:38 AM

Can someone explain to me how Pluraleyes would work using multiclip? Let say you shoot 1 camera continuously for 1 hr and the the second camera starts and stops a number of times, resulting in many separate clips. When you create a multiclip its going to ask for 1 clip for each camera but in this scenario there will be multiple non contiguous clips for the 2nd camera. How would Pluraleyes be used to sync the two cameras?

One other semi-related issue is if one camera is shooting interlace and the other in progressive. I assume either the progressive will need to be converted into interlace or the interlace convert to progressive in order to put them into the same multiclip. If so which is better to do?

Geoff Dills · May 15th, 2011, 08:09 AM

Basically you plop down both cameras in a sequence, tell puraleyes to sync. In the new sequence it creates, your cameras will be synced with gaps where cameras weren't running. You need to then export each video track separately into a qt reference movie which you can then import and put on higher tracks in the sequence. THEN you can select these two new clips and create the multiclip,

Pete Cofrancesco · May 17th, 2011, 10:46 AM

I tried it out. I'm curious how an exclusively audio source is dealt with. For example, I recorded a performance that is over 2 hrs long without an intermission. The 3 camera sources that have interruptions for tape changes while the a digital audio recorder has no interruptions. Pluraleyes was able to create a synced sequence but it couldn't create a multiclip because the audio recorder has no video with it. Further complicating the digital audio source needs to be mixed with the cameras to provide the proper balance between the sound board and ambient. I suppose this should be done in an audio editor and added back in at some point.

I also noticed it creates aiff files. can they be deleted after syncing?

Geoff Dills · May 17th, 2011, 04:56 PM

You can't use audio only clips in a multi clip. So what I do is duplicate the synced sequence, delete the audio only tracks, export the two (or more) video tracks as separate, new, QT reference movies, then bring those clips back into the sequence on new tracks above the existing tracks.. Make your multi clip from those new movies, put the multiclip on the top track and you'll have a sequence with everything synced and all your audio sources as well as being able to see the gaps in the cameras to know when they're black.

Pete Cofrancesco · May 17th, 2011, 06:03 PM

Thats a nice method. Is there any quality lose doing the reference movie thing?

Geoff Dills · May 18th, 2011, 04:10 AM

A reference movie is simply pointers to existing files, so nothing new is created. No loss and little hard drive space used.

Erik Andersen · May 18th, 2011, 10:57 PM

Quote:

Originally Posted by Pete Cofrancesco

Further complicating the digital audio source needs to be mixed with the cameras to provide the proper balance between the sound board and ambient. I suppose this should be done in an audio editor and added back in at some point.

As part of creating reference quicktime movies as Geoff recommends, mix your audio straight away in your timeline so that when you export the ref movie from a particular angle you also bake in the audio you want.

Pete Cofrancesco · May 21st, 2011, 08:23 AM

I'm getting a green render for my multiclip

edit: seems like when I make multiclip with more than 2 angles I get a green render line above it. Not sure why.

Erik Andersen · May 22nd, 2011, 12:27 PM

This has more to do with playback. A multiclip forces your computer to display twice as much video information as a regular clip. If you do allow Final Cut to render a multiclip it will basically get rid of the non0selected angle so it looks like there's only one angle. So don't render multiclips, or at least not until the edit is complete.

As one of the final steps before going to DVD/blu-ray, I select everything in the timeline, then control click a multiclip and select "collapse multiclips." I don't have any evidence but it stands to reason that this would reduce render time. You can always uncollapse again if needed.

Pete Cofrancesco · May 22nd, 2011, 04:53 PM

I'm starting to get a better handle on things but I wasted a lot time in the process. I thought it would be easier to adjust the color and brightness then save it as a reference movie instead of apply filters at the multiclip stage. It took 2hrs to export because even though there was no green render line it must need to recreate all the frames. I'm use to working in SD, I've noticed HD needs more renders and it takes longer.

May 12th, 2011, 09:38 AM	#1
Pete Cofrancesco Inner Circle Join Date: May 2004 Location: USA Posts: 2,995	Pluraleyes with Multiclip Can someone explain to me how Pluraleyes would work using multiclip? Let say you shoot 1 camera continuously for 1 hr and the the second camera starts and stops a number of times, resulting in many separate clips. When you create a multiclip its going to ask for 1 clip for each camera but in this scenario there will be multiple non contiguous clips for the 2nd camera. How would Pluraleyes be used to sync the two cameras? One other semi-related issue is if one camera is shooting interlace and the other in progressive. I assume either the progressive will need to be converted into interlace or the interlace convert to progressive in order to put them into the same multiclip. If so which is better to do?

May 15th, 2011, 08:09 AM	#2
Geoff Dills Regular Crew Join Date: Oct 2005 Location: Washington, DC Posts: 85	Re: Pluraleyes with Multiclip Basically you plop down both cameras in a sequence, tell puraleyes to sync. In the new sequence it creates, your cameras will be synced with gaps where cameras weren't running. You need to then export each video track separately into a qt reference movie which you can then import and put on higher tracks in the sequence. THEN you can select these two new clips and create the multiclip,

May 17th, 2011, 10:46 AM	#3
Pete Cofrancesco Inner Circle Join Date: May 2004 Location: USA Posts: 2,995	Re: Pluraleyes with Multiclip I tried it out. I'm curious how an exclusively audio source is dealt with. For example, I recorded a performance that is over 2 hrs long without an intermission. The 3 camera sources that have interruptions for tape changes while the a digital audio recorder has no interruptions. Pluraleyes was able to create a synced sequence but it couldn't create a multiclip because the audio recorder has no video with it. Further complicating the digital audio source needs to be mixed with the cameras to provide the proper balance between the sound board and ambient. I suppose this should be done in an audio editor and added back in at some point. I also noticed it creates aiff files. can they be deleted after syncing? Last edited by Pete Cofrancesco; May 17th, 2011 at 12:12 PM.

May 17th, 2011, 04:56 PM	#4
Geoff Dills Regular Crew Join Date: Oct 2005 Location: Washington, DC Posts: 85	Re: Pluraleyes with Multiclip You can't use audio only clips in a multi clip. So what I do is duplicate the synced sequence, delete the audio only tracks, export the two (or more) video tracks as separate, new, QT reference movies, then bring those clips back into the sequence on new tracks above the existing tracks.. Make your multi clip from those new movies, put the multiclip on the top track and you'll have a sequence with everything synced and all your audio sources as well as being able to see the gaps in the cameras to know when they're black.

May 17th, 2011, 06:03 PM	#5
Pete Cofrancesco Inner Circle Join Date: May 2004 Location: USA Posts: 2,995	Re: Pluraleyes with Multiclip Thats a nice method. Is there any quality lose doing the reference movie thing?

May 18th, 2011, 04:10 AM	#6
Geoff Dills Regular Crew Join Date: Oct 2005 Location: Washington, DC Posts: 85	Re: Pluraleyes with Multiclip A reference movie is simply pointers to existing files, so nothing new is created. No loss and little hard drive space used.

May 21st, 2011, 08:23 AM	#8
Pete Cofrancesco Inner Circle Join Date: May 2004 Location: USA Posts: 2,995	Re: Pluraleyes with Multiclip I'm getting a green render for my multiclip edit: seems like when I make multiclip with more than 2 angles I get a green render line above it. Not sure why. Last edited by Pete Cofrancesco; May 21st, 2011 at 03:55 PM.

May 22nd, 2011, 12:27 PM	#9
Erik Andersen Major Player Join Date: Feb 2009 Location: Vancouver Canada Posts: 218	Re: Pluraleyes with Multiclip This has more to do with playback. A multiclip forces your computer to display twice as much video information as a regular clip. If you do allow Final Cut to render a multiclip it will basically get rid of the non0selected angle so it looks like there's only one angle. So don't render multiclips, or at least not until the edit is complete. As one of the final steps before going to DVD/blu-ray, I select everything in the timeline, then control click a multiclip and select "collapse multiclips." I don't have any evidence but it stands to reason that this would reduce render time. You can always uncollapse again if needed. __________________ Canon 5D Mark II \|\| L-Series Lenses \|\| Steadicam Pilot \|\| Final Cut Studio www.lovestorymedia.com

May 22nd, 2011, 04:53 PM	#10
Pete Cofrancesco Inner Circle Join Date: May 2004 Location: USA Posts: 2,995	Re: Pluraleyes with Multiclip I'm starting to get a better handle on things but I wasted a lot time in the process. I thought it would be easier to adjust the color and brightness then save it as a reference movie instead of apply filters at the multiclip stage. It took 2hrs to export because even though there was no green render line it must need to recreate all the frames. I'm use to working in SD, I've noticed HD needs more renders and it takes longer. Last edited by Pete Cofrancesco; May 22nd, 2011 at 05:50 PM.