• Apple Final Cut Pro Legacy

  Aliasing when I Edit to Tape

  Posted by Josh Kanuck on July 2, 2008 at 3:24 am

  My System:

  8 Core Mac Pro 3 ghz, 12 Gig ram
  Kona LHe card
  Fibre card
  FCP 6.0.3

  I am laying off xdcam 23.98 footage to HDCAM tapes and am having aliasing problems. My show has been recompressed to apple prorez 422 23.98 for the online process

  When i play the footage off the timeline it is razor sharp, but the second i employ an “Edit to Tape” it has lots of aliasing and jagged edges. It appears to be a lower quality than when i play out normal.
  any suggestions?

  1. i have already checked that when edit to tape is selected it doesn’t output differently from my current settings
  2. under the real time pulldown in the timeline “High quality” play back is greyed out, only dynamic is available.
  3. my kona card is set up fine, it is outputing 1080psf 23.98
  4. i have exported quicktimes and tried both 10 bit and 8 bit versions/sequences, no difference.
  5. everything is rendered “full”

  Thanks,

  Josh
  online editor
  pangolin pictures
  jo**@**************es.com

  Jeremy Garchow replied 17 years, 10 months ago 2 Members · 5 Replies
• 5 Replies

• 

  Jeremy Garchow

  July 2, 2008 at 4:00 am

  Do you have a monitor?
• 

  Josh Kanuck

  July 2, 2008 at 12:00 pm

  Yes i have a monitor. I am going out to two monitors through my kona card:

  1. panasonic 37 inch HD plasma via component out.
  2. 17 inch multiformat professional HD CRT monitor (sony?)

  it looks aliased on both monitors, and also after i lay off to tape, i played the tape back and it had the aliasing on the tape as well.

  Thanks,

  Josh
• 

  Jeremy Garchow

  July 2, 2008 at 6:17 pm

  Well, it sounds like you have a configuration issue. Aliasing doesn’t just happen on an Edit to Tape as it’s playing back the exact same files that you are monitoring.

  What format does you Kona control panel say you are monitoring? You have to position the CP so that you can see it while FCP is selected.

  Jeremy
• 

  Josh Kanuck

  July 2, 2008 at 6:30 pm

  It seems that i have fixed the problem.

  The origin of it was that the “high quality” under the real time menu was not on, but set to dynamic.

  the problem was i couldn’t set it to high quality, because high quality was greyed out.

  after searching the forum someone suggested looking at what ram you have, and this was the problem.

  FCP needs all matching ram i guess to operate properly. I had 2 pairs of 2gig ram, and 2 pairs of 1 gig ram. i know have 4 pairs of 2 gig ram and it is running fine.

  no more aliasing.

  thanks!
• 

  Jeremy Garchow

  July 2, 2008 at 6:35 pm

  Yep, that will do it.

  Jeremy

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