| FFmpegKit iOS / macOS / tvOS API 4.5

### - h -

- h : InputStream::sub2video
- has_end : ReadInterval
- has_nested_elems : CompactContext
- has_start : ReadInterval
- header_written : OutputFile
- height : InputFilter, OutputFilter
- help : OptionDef
- hierarchical : FlatContext, INIContext
- hw_frames_ctx : InputFilter, InputStream
- hwaccel_ctx : InputStream, OutputStream
- hwaccel_device : InputStream
- hwaccel_device_type : InputStream
- hwaccel_devices : OptionsContext
- hwaccel_get_buffer : InputStream
- hwaccel_id : InputStream
- hwaccel_output_format : InputStream
- hwaccel_output_formats : OptionsContext
- hwaccel_pix_fmt : InputStream
- hwaccel_retrieve_data : InputStream
- hwaccel_retrieved_pix_fmt : InputStream
- hwaccel_uninit : InputStream
- hwaccels : OptionsContext