pub unsafe extern "C" fn av_rescale_delta(
in_tb: AVRational,
in_ts: i64,
fs_tb: AVRational,
duration: c_int,
last: *mut i64,
out_tb: AVRational,
) -> i64
pub unsafe extern "C" fn av_rescale_delta(
in_tb: AVRational,
in_ts: i64,
fs_tb: AVRational,
duration: c_int,
last: *mut i64,
out_tb: AVRational,
) -> i64