Overscan color extract review

[iLLiCiTiT]

Description

Overscan color in extract review is now hardcoded to black (when input vs. output aspect ratio does not match). In some cases it would be nice to have ability to modify it.

Changes

• ExtractReview has overscan_color attribute which define padding color on aspect ratio change
• color entity can have defined use_alpha attribute (true/false)
  • color widget won't show alpha inputs is use_alpha is false
• updated docstring screenshot of Output definitions
• added Overscan color and Background color to documentation

Screenshot

Input: 4056x2295 | Output: 2048x872

• Real image: smiley
• Background color: green
• Overscan color: red

How to test

Option n1

1. set one output definition of ExtractReview with defined output width and height (e.g. 1920x1080)
2. prepare image sequence or video file with different aspect ratio (e.g. 400x400)

• go to step 3

Option n2

1. set overscan crop to get different aspect ratio (e.g. -10% -0%)
2. prepare any image sequence or video file

• go to step 3

3. set overscan color in the same Output definition to any other color than black too see difference (e.g. red)
4. put the image sequence of video file in standalone publisher and choose one of families which publish and reate review (e.g. plate, image,...)
5. make sure PREVIEW in standalone publisher is checked on passed sequence/file
6. publish -> check output: overscan should have color from step 2

Same should work with different aspect ratios from any host.

Closes: https://github.com/pypeclub/client/issues/105

[iLLiCiTiT]

Have to add docs for new setting...

[jakubjezek001]

I am ready to test this but please could you add some testing notes? @iLLiCiTiT

[jakubjezek001]

Awesome! Great work!