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🎥 MP4 reader and writer library in Rust! 🦀

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Nathan Fiedler 56cc260a5c fix: minimize assertions in non-test code (#56 ) Initial effort to reduce or eliminate the use of assertions in the production code (i.e. not test code). See issue 43 for an example of how this can cause an application (thread) to panic when reading an unusual file. Not all of the changes were as simple as returning an Err, since some functions did not return a Result. Also, the error type used (InvalidData) is just a catch-all with a message, and in some cases a more refined error type may be in order. cargo test passes		2021-07-12 17:28:39 -07:00
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src	fix: minimize assertions in non-test code (#56 )	2021-07-12 17:28:39 -07:00
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README.md	0.8.2	2021-04-04 12:01:21 -07:00

README.md

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().iter() {
        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 = "0.8.2"

Documentation

https://docs.rs/mp4/

Development

Requirements

Rust

Build

cargo build

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 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.

License

MIT