Wednesday, February 11, 2015

Re: [Avid-L2] What is the most expedient way to make a 59.94 1080I file from 23.976 Project?

 

Here is the guide I wrote some time ago, tested and validated since:

1. Open original project 23.98 and load your sequence(SEQ1) in the timeline
2. Go to Special>Video Mixdown>choose codec as Apple ProResHQ and your target. This will create a single contiguous clip of your sequence with no audio and using the ProRes desired codec. (~0.3-0.4xRT)
3. Dupe your sequence and remove all its video tracks. Replace them with the video mixdown above. This is now SEQ2

4. Create a 1080i/59.94 project. Open the bin with SEQ1, SEQ2 from the 23.98 project
5. Double click SEQ2 to load to timeline. There will be a warning message that sequence framerate doesn't match your project and offering to create a duplicate with proper settings - say OK. This loads the sequence and applies the required motion adapters(timewarp effect)
6. Open Effect Mode>Promote and make sure Type=Both Fields, Source=Progressive, Output=Film with 3:2 pulldown
7. File>Export>Options> Export As=Quicktime Movie, Same as Source, Video an Audio, Audio Format=Direct out, Color Levels=601/709, Display Aspect Ratio=16:9 square pixels, Use Marks/Use Enabled Tracks as appropriate (~0.5-0.6xRT)

Testing performed on a 6core 4GHz Intel computer (processing times in brackets) with 1TB single spindle as source and 5x500GB RAID0 for the target.

cheers,
BG
 



From: "John Moore bigfish@pacbell.net [Avid-L2]" <Avid-L2@yahoogroups.com>
To: Avid L2 <avid-l2@yahoogroups.com>
Sent: Wednesday, February 11, 2015 9:15 PM
Subject: [Avid-L2] What is the most expedient way to make a 59.94 1080I file from 23.976 Project?

 
I know from previous threads the most accurate cadence method is to make a video mixdown in the 23.976 project then bring that into a 59.94I 1080 project but in practice I'm finding this more tedious than I had expected.  The video mixdown in the 23.976 project is no problem.  I cut out all the video but the mixdown and modify that sequence to 59.94 while still in the 23.976 project.  Everything is fine.  I then open the 59.94 project and open the modified sequence.  The sequence has audio that was an aaf import from protools in the 23.976 project.  I have audio on channels 1,2,4&5 so I have to export a QT ref to keep the multichannel audio.  Now avid says it has to mixdown the audio but it won't do the export in direct audio out.  Also to do the QT ref avid now has to render the video mixdown with the 2:3 motion adapter.  If I was going to tape this would not be an issue but it's a rerender pain.  Am I missing something here.  At first I thought to reimport the audio aaf into the 59.94 project but that errors saying the clips have already been imported and there is a conflict.  So I then just tried to do audio mixdowns of the 4 channels of active audio so they wouldn't have and 23.976 frame rate flags.  Still avid wants to mixdown the audio.  Now I'm doing a new video mixdown in the 59.94 so the timeline will only be video and audio mixdowns that have all been created in a 59.94 project.  I'm hoping this will QT ref export properly.

Bottom line is there a file based solution that I could just export a QT ref out of the original 23.976 project and open that is something like Sorenson and have it export a new self contained QT at the 59.94 frame rate with pulldown added and the multi channels of audio?  I usually work in a more native 59.94 timeline and do QT ref exports all the time with multichannels that I can then use QT Pro to save as or in some cases export to ProResHQ.  This mixed frame rate conundrum is making that workflow very problematic and difficult.  If I had an SR deck I'd just use universal mastering and recapture but I don't have that deck right now.
 
John Moore
Barking Trout Productions
Studio City, CA
bigfish@pacbell.net


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Posted by: Bogdan Grigorescu <bogdan_grigorescu@yahoo.com>
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