# Part ## Fields | Field | Type | Required | Description | Example | | ----------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------- | | `id` | *T.nilable(::Float)* | :heavy_minus_sign: | N/A | 120353 | | `key` | *T.nilable(::String)* | :heavy_minus_sign: | N/A | /library/parts/120353/1681803203/file.mp4 | | `duration` | *T.nilable(::Float)* | :heavy_minus_sign: | N/A | 7474422 | | `file` | *T.nilable(::String)* | :heavy_minus_sign: | N/A | /movies/Ant-Man and the Wasp Quantumania (2023)/Ant-Man.and.the.Wasp.Quantumania.2023.1080p.mp4 | | `size` | *T.nilable(::Float)* | :heavy_minus_sign: | N/A | 3395307162 | | `container` | *T.nilable(::String)* | :heavy_minus_sign: | N/A | mp4 | | `has64bit_offsets` | *T.nilable(T::Boolean)* | :heavy_minus_sign: | N/A | | | `has_thumbnail` | *T.nilable(::Float)* | :heavy_minus_sign: | N/A | 1 | | `optimized_for_streaming` | *T.nilable(T::Boolean)* | :heavy_minus_sign: | N/A | | | `video_profile` | *T.nilable(::String)* | :heavy_minus_sign: | N/A | high |