OpenTimelineIO

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library 0.18.1 ·python
verified May 1, 2026

OpenTimelineIO (OTIO) is an interchange format and Python API for editorial timeline information. It provides a common data model for representing timelines, clips, effects, markers, and transitions, and includes adapters for reading/writing various editorial formats (e.g., AAF, CMX 3600 EDL, Final Cut Pro XML). The current version is 0.18.1 (Beta). Release cadence is approximately two major beta releases per year. Requires Python >3.9.

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