Class Video

shared/database/video/video.py:7–273

A video has: multiple files multiple instances multiple keyframes

class Video(Base):
    """
    A video has:
        multiple files
        multiple instances
        multiple keyframes

    """
    __tablename__ = 'video'
    id = Column(Integer, primary_key = True)

    # TODO confirm this is deprecated!!!
    keyframe_list = Column(MutableDict.as_mutable(JSONEncodedDict),
                           default = {})
    # TODO is this deprecated? ###
    label_id_map_to_instance_group_id = Column(MutableDict.as_mutable(JSONEncodedDict),
                                               default = {})
    ####

    root_blob_path_to_frames = Column(String())

    url_signed_expiry = Column(Integer)
    file_signed_url = Column(String())
    file_blob_path = Column(String())

    preview_image_url_thumb = Column(String())
    preview_image_id = Column(Integer, ForeignKey('image.id'))
    preview_image = relationship("Image")

    width = Column(Integer)
    height = Column(Integer)

    soft_delete = Column(Boolean, default = False)
    filename = Column(String())

    # frame_number is 0 indexed while frame_count is not?
    # ie last frame number == 68 and frame_count == 69 == ok
    frame_count = Column(Integer)

    description = Column(String())

    created_time = Column(DateTime, default = datetime.datetime.utcnow)
    last_updated_time = Column(DateTime)

    status = Column(String(), default = "init")

    frame_rate = Column(Integer)  # Actual FPS
    original_fps = Column(Integer)
    fps_conversion_ratio = Column(Float, default = 1)

    offset_in_seconds = Column(Integer)
    parent_video_split_duration = Column(Integer())

    def get_by_id(session, id):
        return session.query(Video).filter(
            Video.id == id).first()

    def regenerate_url(