Function decode

pub fn decode<P, Q>(
    in_video: P,
    out_video: Q,
    user: &str,
    password: &str,
) -> Result<()>
where
    P: AsRef<Path>,
    Q: AsRef<Path> + Debug + Copy,

Decode a encoded video file. in_video is the path of the decoded video file. out_video is the path of the cut video file.