tion = 281
                            size = 28
                            version = 0
                            flags = 0x000000
                            entry_count = 1
                            entry[0]
                                segment_duration = 33600
                                media_time = 312
                                media_rate = 1.000000
                    [mdia: Media Box]
                        position = 276
                        size = 472
                        [