Re: OpenTimelineIO meeting agenda 2019-10-16
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Joshua Minor
Here are my notes from today's meeting: Attendees: Joshua Minor (Pixar) Eric Reinecke (Netflix) Michel Eid (Autodesk) Eric Desruisseaux (Autodesk) Josh Burnell (Dreamworks) John Mertic (Linux Foundation) Daniel Flehner Heen (Storm Studios) Topics: ASWF Transition: - Currently OTIO uses a Disney-approved modified Apache license. The modification addresses some trademark-related concerns that are important to Disney. - OTIO would like to move to a standard un-modified Apache license to avoid friction for new users & contributors. - ASWF, Pixar, and Linux Foundation legal are working to find a compromise. - We intend to change the copyright notice at the top of each source file to say "Copyright Contributors to the OpenTimelineIO Project" - This does not actually transfer the legal copyright, it just makes the source headers uniform and acknowledges that many of the files have contributions from multiple contributors. - We plan to move OTIO to the ASWF continuous integration system in the future. - Eric (Netflix) will do some initial investigation in the coming weeks. - We expect that the new CI system will give us Mac, Windows, Linux platform support, as well as auditing of CLAs, licenses, etc. - opentimeline.io domain registration is held by Eric, but we plan to move to ASWF. Image Sequence Schema - There is general agreement about the proposed Image Sequence schema: based on earlier PR from Daniel: https://github.com/PixarAnimationStudios/OpenTimelineIO/pull/536 - We discussed the ability to maintain an offset between frame numbers and available_range. - We agreed that an ImageSequenceReference will support a uniform set of frames (same resolution, bit depth, etc.) - Unexpected missing frames in a sequence can be handled via a policy enum. - Expected missing frames (e.g. rendered on 2's) can be handled via frame_skip, so that consumers will know they are meant to be missing. - Negative frame numbers seem rare and undesirable, but we should be clear if OTIO supports them or not (maybe just document & unit test?) - Eric will update to clarify some things and address notes. Universal Coordinate System - Conversations with other OTIO users is finding general agreement with proposal. - Michel & Eric (Autodesk) will work on PR RationalTime v2 - Josh (Pixar) attempting to make a test suite to allow experimentation with alternates (double+int/int, int+int/int, etc.) Timewarp Effects - Pixar has use case for this and plans to do work on this in the coming months. - Looking for experience & perspective on how other systems handle timewarps (Premiere, Final Cut, RV, etc.) AAF - Michel (Autodesk) has a good contact at Avid. Avid has agreed to provide consultancy on timecode and nesting questions for OTIO. - There is some miscommunication about some technical documents we received from Avid. We are working to clear that up. Meeting schedule - We are going to switch this OTIO TSC meeting to a 2-week cadence instead of every week. --- Joshua Minor (he-him) Pixar Studio Tools Story/Editorial/VR Previs Tech Lead joshm@...
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