TVPaint Start Frame

[iLLiCiTiT]

Description

It seems that TVPaint start frame of scene may affect frame indexes during rendering. So start frame should be used as offset for rendered frame indexes.

Changes

• use scene start frame as offset for rendered frame indexes
• added validator which validates if start frame is set to '0'
  • validator is turned off by default

How to test

1. Open TVPaint and change start frame of scene to e.g. 2 (How to)
2. Set MarkIn and MarkOut to match asset frame start/end
3. On each frame add different image so they are easily identified (e.g. paint numbers on them)
4. Create render layer/pass
5. Publish all of that and review
6. Check if rendered frames match frames from scene

	OpenPype 2 PRs
OpenPype	#1839