davinci_export

def create_otio_timeline(resolve_project, timeline=None):
    """Create otio timeline from resolve timeline

    Args:
        resolve_project (resolve.Project): resolve project
        timeline (resolve.Timeline, optional): resolve timeline. Defaults to None.

    Returns:
        otio.schema.Timeline: otio timeline
    """

    # get current timeline
    timeline = timeline or resolve_project.GetCurrentTimeline()
    timeline_fps = (
        timeline.GetSetting("timelineFrameRate") or
        resolve_project.GetSetting("timelineFrameRate")
    )

    # convert timeline to otio
    otio_timeline = _create_otio_timeline(
        resolve_project, timeline, timeline_fps)

    # loop all defined track types
    for track_type in list(TRACK_TYPES.keys()):
        # get total track count
        track_count = timeline.GetTrackCount(track_type)

        # loop all tracks by track indexes
        for track_index in range(1, int(track_count) + 1):
            # get current track name
            track_name = timeline.GetTrackName(track_type, track_index)

            # convert track to otio
            otio_track = create_otio_track(
                track_type, track_name)

            # get all track items in current track
            current_track_items = timeline.GetItemListInTrack(
                track_type, track_index)

            # loop available track items in current track items
            for track_item in current_track_items:
                # skip offline track items
                if track_item.GetMediaPoolItem() is None:
                    continue

                # calculate real clip start
                clip_start = track_item.GetStart() - timeline.GetStartFrame()

                add_otio_gap(
                    clip_start, otio_track, track_item, timeline)

                # create otio clip and add it to track
                otio_clip = create_otio_clip(track_item, fps=timeline_fps)

                if not isinstance(otio_clip, list):
                    otio_track.append(otio_clip)
                else:
                    for index, clip in enumerate(otio_clip):
                        if index == 0:
                            otio_track.append(clip)
                        else:
                            # add previous otio track to timeline
                            otio_timeline.tracks.append(otio_track)
                            # convert track to otio
                            otio_track = create_otio_track(
                                track_type, track_name)
                            add_otio_gap(
                                clip_start, otio_track,
                                track_item, timeline)
                            otio_track.append(clip)

            # add track to otio timeline
            otio_timeline.tracks.append(otio_track)

    return otio_timeline