extern crate mp4; use std::env; use std::fs::File; fn main() { let args: Vec = env::args().collect(); match args.len() { 2 => { let filename = &args[1]; let f = File::open(filename).unwrap(); let bmff = mp4::read_mp4(f); // Print results. println!("{:?}", bmff.unwrap()); }, _ => { println!("Usage: mp4info "); } } }