Leave 30 FPS to 25 FPS conversion until last? at DVinfo.net

Go Back   DV Info Net > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon EOS Full Frame for HD

Canon EOS Full Frame for HD
All about using the Canon 1D X, 6D, 5D Mk. IV / Mk. III / Mk. II D-SLR for 4K and HD video recording.


Reply
 
Thread Tools Search this Thread
Old June 7th, 2009, 09:04 AM   #1
Regular Crew
 
Join Date: Nov 2006
Location: Dublin, Ireland
Posts: 51
Leave 30 FPS to 25 FPS conversion until last?

What are the arguments against leaving the Compressor conversion from 30 FPS to 25 FPS (PAL) until the final stage in an FCP edit? The advantages are obvious in terms of not having to convert unused footage. The edit material would not involve any significant layers or special effects, but would go on to be graded in Color.
Robert Esmonde is offline   Reply With Quote
Old June 7th, 2009, 10:10 AM   #2
Inner Circle
 
Join Date: May 2006
Location: Camas, WA, USA
Posts: 5,513
If all of your clips have a similar feel (say, a romantic drama), do the frame rate conversion last. That way, you'll convert as little as possible, avoiding discarded clips. It also lets you do all of your creative work without breaking it up with technical worries.

This assumes that the technique you use has scene change detection. One thing for sure, you don't want to blend frames across scene changes. You want hard cuts.

If some of your scenes are unique (a fast moving fight scene within a drama), you might want to convert that separately, since you might choose different parameters.

The approach I used in an international project with a wide variety of clips and formats was to edit each clip alternately onto timelines A or B. That allowed me to extend each clip by three or four frames. After all of the edit points were locked, I converted every clip individually, including these additional frames. That allowed the final edit to have clean transitions.

If you do the conversion last, you might review every cut frame-by-frame. In the cases that you get a merged frame at a cut, go back to your original content, grab one clean frame and insert it over the merged frame. That will ensure that your cuts are 100% pure.
__________________
Jon Fairhurst
Jon Fairhurst is offline   Reply With Quote
Old June 7th, 2009, 12:51 PM   #3
Regular Crew
 
Join Date: Nov 2006
Location: Dublin, Ireland
Posts: 51
Thanks Jon for that very useful advice.

I think there's an option in Avid Media Composer to 'consolidate' an edit, which saves all of the scenes complete with 'handles' of extra frames as specified. If FCP has a similar option that might be the way to go. This should overcome any dissolves issues and leave the flexibility for future tweaking of the material (in 25 FPS) even after the final edit or conform. The end result should be similar to your approach of A and B timelines. I'll have to check it out further.
Robert Esmonde is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon EOS Full Frame for HD

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 05:03 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network