mp4

MP4 Reader and Writer in Rust 🦀

mp4 is a Rust library to read and write ISO-MP4 files. This package contains MPEG-4 specifications defined in parts:

• ISO/IEC 14496-12 - ISO Base Media File Format (QuickTime, MPEG-4, etc)
• ISO/IEC 14496-14 - MP4 file format
• ISO/IEC 14496-17 - Streaming text format

https://crates.io/crates/mp4

Example

use std::fs::File;
use std::io::{BufReader};
use mp4::{Result};

fn main() -> Result<()> {
    let f = File::open("tests/samples/minimal.mp4").unwrap();
    let size = f.metadata()?.len();
    let reader = BufReader::new(f);

    let mp4 = mp4::Mp4Reader::read_header(reader, size)?;

    // Print boxes.
    println!("major brand: {}", mp4.ftyp.major_brand);
    println!("timescale: {}", mp4.moov.mvhd.timescale);

    // Use available methods.
    println!("size: {}", mp4.size());

    let mut compatible_brands = String::new();
    for brand in mp4.compatible_brands().iter() {
        compatible_brands.push_str(&brand.to_string());
        compatible_brands.push_str(",");
    }
    println!("compatible brands: {}", compatible_brands);
    println!("duration: {:?}", mp4.duration());

    // Track info.
    for track in mp4.tracks().values() {
        println!(
            "track: #{}({}) {} : {}",
            track.track_id(),
            track.language(),
            track.track_type()?,
            track.box_type()?,
        );
    }
    Ok(())
}

See examples/ for more examples.

Install

Add to your Cargo.toml:

mp4 = "0.12.0"

Documentation

• https://docs.rs/mp4/

Development

Requirements

• Rust

Build

cargo build

Lint and Format

cargo clippy --fix
cargo fmt --all

Run Examples

• mp4info

cargo run --example mp4info <movie.mp4>

• mp4dump

cargo run --example mp4dump <movie.mp4>

Run Tests

cargo test

With print statement output.

cargo test -- --nocapture

Run Cargo fmt

Run fmt to catch formatting errors.

rustup component add rustfmt
cargo fmt --all -- --check

Run Clippy

Run Clippy tests to catch common lints and mistakes.

rustup component add clippy
cargo clippy --no-deps -- -D warnings

Run Benchmark Tests

cargo bench

View HTML report at target/criterion/report/index.html

Generate Docs

cargo docs

View at target/doc/mp4/index.html

Web Assembly

See the mp4-inspector project as a reference for using this library in Javascript via Web Assembly.

Related Projects

• https://github.com/mozilla/mp4parse-rust
• https://github.com/pcwalton/rust-media
• https://github.com/alfg/mp4

License

MIT