Crate mp4box 

mp4box

A minimal, dependency-light MP4/ISOBMFF parser for Rust.

This crate parses the MP4 box tree (including 64-bit “large” boxes and UUID boxes), classifies known box types, and lets you attach custom decoders to interpret payloads.

Typical use cases:

• CLIs for inspecting MP4 structure (e.g. mp4dump)
• Tauri / desktop tools that need JSON output for UI
• Backend services that need to inspect or validate MP4 files.

Quick start

use mp4box::analyze_file;

fn main() -> anyhow::Result<()> {
    let boxes = analyze_file("video.mp4", /*decode=*/ false)?;
    println!("Top-level boxes: {}", boxes.len());
    Ok(())
}

For a more advanced example, see the mp4dump binary in this repository.

Re-exports

pub use boxes::BoxHeader;

pub use boxes::BoxKey;

pub use boxes::BoxRef;

pub use boxes::FourCC;

pub use boxes::NodeKind;

pub use json_api::HexDump;

pub use json_api::JsonBox;

pub use json_api::analyze_file;

pub use json_api::hex_range;

pub use parser::parse_children;

pub use parser::read_box_header;

pub use registry::BoxValue;

pub use registry::Registry;

Modules

boxes

json_api

known_boxes

parser

registry

util