• Apple Final Cut Pro Legacy

  Pro-Res vs Uncompressed captured file size comparisons?

  Posted by Chris Borjis on May 23, 2007 at 1:51 am

  anyone have some numbers to share?

  Mack Truck replied 18 years, 11 months ago 8 Members · 11 Replies
• 11 Replies

• 

  Jerry Hofmann

  May 23, 2007 at 2:04 am

  There’s a white paper at Apple on it, but basically it’s about 1/6th the size of uncompressed HD… will work on any setup that can playback 8 bit uncompressed HD… pretty neat. Looks like the original to me too.

  Jerry

  Apple Certified Trainer

  Author: “Jerry Hofmann on Final Cut Pro 4” Click here

  Dual 2 gig G5, AJA Kona SD, AJA Kona 2, Huge Systems Array UL3D
• 

  Jeremy Garchow

  May 23, 2007 at 2:37 am

  Here’s a handy chart, if you are into charts that is:

  https://www.appleinsider.com/articles/07/04/18/a_closer_look_at_apples_new_prores_422_video_format.html

  Jeremy
• 

  David Mcgiffert

  May 23, 2007 at 3:33 am

  Hi Jeremy,

  Even if I am not into charts, that
  was a cool paper.

  Thanks, it was educational.

  David
• 

  Michael Sandness

  May 23, 2007 at 2:11 pm

  As a test, I media managed 90 gigabytes of 10-bit 1080i 29.97 to ProRes.
  Results created new media that is 9.6 gigabytes!!
  When I play this out to scope their is no “visable” differnce between 10 bit and ProRes.

  Because of this, our XSAN just became useful for HD!

  Michael Sandness
  Colorist-Finishing
  Splice Here, Minneapolis MN
  http://www.splicehere.tv
• 

  Steven Gonzales

  May 23, 2007 at 4:25 pm

  I have some uncompressed RGB 1080P footage, 23.98 fps, 1920 by 1080, 58 seconds is 10.88 GB.

  I used compressor to convert it to ProRes422, 23.98 fps, 1920 by 1080 and the file size is 1.16 GB.
• 

  Russell Lasson

  May 23, 2007 at 4:29 pm

  Is ProRes YUV? Did you have any sort of color shift or gamma shift when converting RGB to ProRes?

  Thanks,

  -Russ
• 

  Steven Gonzales

  May 23, 2007 at 5:03 pm

  Unknown so far.

  This was my first test. It’s a telecine from super 35mm, and this clip had no color reference.

  I’ll check carefully when I get something with a color chart.
• 

  Jeremy Garchow

  May 23, 2007 at 5:31 pm

  Man, this all sounds sweet!
• 

  Steven Gonzales

  May 23, 2007 at 6:51 pm

  I don’t have any actual measurements, but when color chart is viewed on the same 30″ Apple monitor, the ProRes422 appears more saturated generally (which I realize is not really valid for much).

  I’ll try to get some valid comparison via Matrox MXO w/ Apple 23″ display (which is the closest thing to accurate I have).

  I do have some data on transcoding with compressor. On a Dual 3 Ghz with 8 GB ram, it takes approx. 3.31 times real time to transcode.

  A 449 second (7 min, 29 secs) clip took 1486 seconds (24 min, 46 secs) to transcode.
• 

  Russell Lasson

  May 23, 2007 at 6:59 pm

  But no obvious changes in the black and white points? Cool!

  -Russ

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