• Apple Final Cut Pro Legacy

  Brightness jumps at beginning/end of dissolves ?

  Posted by Rj Miles on October 22, 2006 at 6:16 pm

  What causes brightness jumps/dips at the beginning & end of dissolves when exporting the sequence to a quicktime movie using the CURRENT SETTINGS?

  The rendered transitions look fine when played in the timeline. When the sequence is exported, the QT movie has a jump in brightness at the 1st frame and a dip in brightness at last frames of each dissolve.

  Exporting with “recompress all frames” on export or chosing the codec eliminates the jumps/dips. Of course these options are also much slower.

  Is there something I need to tweak?

  Steve Shadforth replied 15 years, 3 months ago 4 Members · 6 Replies
• 6 Replies

• 

  Kevin Monahan

  October 22, 2006 at 6:39 pm

  Never judge quality using QT Player unless you’ve enabled the High Quality flag.

  Go here:
  https://web.mac.com/sfcutters/iWeb/fcpworld/news/D4363B62-EFF5-4F30-B719-9A5E93AE4C92.html

  Come back and tell us if that worked for you.

  Kevin Monahan
  Take My FCP Master’s Workshop!
  fcpworld.com
  Pres. SF Cutters
• 

  Rj Miles

  October 22, 2006 at 7:30 pm

  Hi Kevin…

  Thanks for this tip. I learned about the high quality option when I 1st saw problems with imported DV footage when viewed in QT.

  The high quality is checked, and does not change the jump/dip artifact.

  I tried recompressing the problem exports in cleaner, to my online 320×240 review size, and the jumps/dips were also in these files as well.

  There definitely seems to be something bad happening when exporting with CURRENT SETTINGS and not recompressing all frames. 1st I thought maybe I had made a mistake in the alignment of lower layers and the higher layer dissolve transitions.

  For now, I’ll just recompress. However, I have a long format HDV projec/edit comping up and recompressing will be a major time hog. 🙁
• 

  Rj Miles

  October 22, 2006 at 7:45 pm

  Here is a link to a folder with the good/bad clips.

  https://www.blanca.com/test/
• 

  Bret Williams

  October 23, 2006 at 3:35 am

  What are your sequence video render settings? Are you rendering with RGB, White or Super White? It should be White.
• 

  Rj Miles

  October 23, 2006 at 3:48 am

  I tried both RGB and the normal YUV 8bit. I made sure I tossed the rendered reference files so they were rebuilt. Both produced the same artifacts.

  I never tried to change the WHITE setting which remains in the default WHITE setup.

  When I get a minute, I plan to try a new project with some DV and HDV footage, rather than strictly with AE rendered source files of the current project.
• 

  Steve Shadforth

  April 27, 2011 at 1:05 pm

  Change the base layer’s composite type to add, fixed it for me.

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