• Apple Final Cut Pro Legacy

  NTSC- CCIR 601 vs. Square Pixels

  Posted by Alexander Lee on January 20, 2006 at 9:36 pm

  Hi,

  I’ve digitized hours of 24p advanced footage shot with my DVX-100, and noticed between tapes that the aspect ratio goes from square to letterboxed. My editor notified me that the “Pixel Aspect” in some shots are “NTSC- CCIR 601” and other shots are “Square”.

  We are currently using Offline RT for the edit- I first captured with “DV NTSC 48 kHz Advanced (2:3:3:2) Pulldown Removal” then downconverted to Offline RT with Media Manager as I could not capture Advanced Pulldown removal 24p Offline RT footage directly.

  I would appreciate any advice to prevent this anomaly when we go to the online full rez DV version. I believe it is a FCP digitizing issue or Offline RT issue and not due to a camera problem.

  Any info much appreciated.

  Alexander

  Specs:
  Powerbook G4
  FCP HD 4.5
  Offline RT (23.98 preset)
  DVX-100- 24p Advanced Mode (F6)

  Kevin Monahan replied 20 years, 3 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Kevin Monahan

  January 22, 2006 at 12:23 am

  [Alexander] “I’ve digitized hours of 24p advanced footage shot with my DVX-100, and noticed between tapes that the aspect ratio goes from square to letterboxed.”
  Hate to say it, but this sounds like a case of operator error. Your tapes should be consistent.

  [Alexander] “My editor notified me that the “Pixel Aspect” in some shots are “NTSC- CCIR 601” and other shots are “Square”.”
  I don’t think this is possible. All digital video except HD is non-square.

  [Alexander] “We are currently using Offline RT for the edit-“
  Not so sure that was a good idea in conterting to OLRT with video that was originally captured with advanced pulldown. Is this an approved workflow in the manual, or did your editor have success doing this in past projects?

  Me? I’d just buy more drive space and capture it all as is.

  [Alexander] “I could not capture Advanced Pulldown removal 24p Offline RT footage directly.”
  Again, not sure that this is an approved worflow. The fact that you could not doi this on capture may be telling you something.

  [Alexander] “I believe it is a FCP digitizing issue or Offline RT issue and not due to a camera problem.”
  Your problem with inconsistencies on the original capture doesn’t sound right. I’d start with reviewing the source tapes and then work back into your current problem.

  Kevin Monahan
  Take My FCP Master’s Seminar!
  fcpworld.com

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