• Apple Final Cut Pro Legacy

  Weird gamma shift when converting Canon H264 to ProRes

  Posted by Chris Tomkins on March 9, 2010 at 1:59 pm

  Hi

  I’ve just shot a bunch of HD footage on the 7D and am converting the camera files to ProRes Progressive with compressor.

  However, I am experiencing this weird random instantaneous gamma shift (at least, I think its a gamma shift).

  Anyone else have this problem? Any suggestions.

  To see what I mean, I uploaded a sample of the original camera clip next to the ProRes compressed clip… Watch the blacks…

  https://vimeo.com/10033091

  Any advice would be greatly appreciated!

  Cheers
  Chris

  Chris Tomkins replied 16 years, 2 months ago 3 Members · 5 Replies
• 5 Replies

• 

  Rafael Amador

  March 9, 2010 at 2:29 pm

  It really jumps.
  How you did the conversion?
  You may try with another application.
  rafael

  http://www.nagavideo.com
• 

  Brian Pitt

  March 9, 2010 at 3:06 pm

  I use MPEG streamclip and have had great results.

  Brian
• 

  Chris Tomkins

  March 9, 2010 at 9:15 pm

  I used Compressor, but I’ll try streamclip and see if it makes any difference.

  cheers

  Chris
• 

  Rafael Amador

  March 10, 2010 at 1:28 am

  Report back, please.
  rafael

  http://www.nagavideo.com
• 

  Chris Tomkins

  March 10, 2010 at 1:43 am

  Tried MPEG Streamclip and everything seems fine. No idea what Compressor was doing to it.

  I guess I’ll just go with MPEG Streamclip from now on.

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