Function ffmpeg_dev::sys::av_opt_set_dict_val

pub unsafe extern "C" fn av_opt_set_dict_val(
    obj: *mut c_void, 
    name: *const c_char, 
    val: *const AVDictionary, 
    search_flags: c_int
) -> c_int

@note Any old dictionary present is discarded and replaced with a copy of the new one. The caller still owns val is and responsible for freeing it.