• Compression Techniques

  cleaner 6 photo-jpeg contrast levels

  Posted by Justin Wheeler on August 13, 2006 at 1:38 pm

  I am having problems with cleaner 6 photo-jpeg contrast levels. Stripping away all optional filters and checkboxes, leaving Cleaner 6 with just the Photo-jpeg original settings, I see a notable difference in contrast levels and image detail compared to Quicktime

  Charles Simonson replied 19 years, 9 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Charles Simonson

  August 13, 2006 at 11:35 pm

  This is most likely due to your source being a different color formar than the Photo-JPEG codec. P-JPEG at 76% and above is a 4:4:4 codec. Below it is 4:2:2. If your source is YUV 4:1:1, 4:2:0, 3:1:1, or RGB, then it is possible that Cleaner is just doing a bad job of converting it. If you are using Mac OS X 10.4, then you can just use automater to batch a bunch of exports using QT.

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