Function ffmpeg_dev::sys::ff_merge_formats

pub unsafe extern "C" fn ff_merge_formats(
    a: *mut AVFilterFormats, 
    b: *mut AVFilterFormats, 
    type_: AVMediaType
) -> *mut AVFilterFormats

Return a format list which contains the intersection of the formats of a and b. Also, all the references of a, all the references of b, and a and b themselves will be deallocated.

If a and b do not share any common formats, neither is modified, and NULL is returned.