Format of the data field in the same struct. See enum mpv_format.
This is always the same format as the requested format, except when
the property could not be retrieved (unavailable, or an error happened),
in which case the format is MPV_FORMAT_NONE.
Format of the data field in the same struct. See enum mpv_format. This is always the same format as the requested format, except when the property could not be retrieved (unavailable, or an error happened), in which case the format is MPV_FORMAT_NONE.