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Rutger Schoorstra
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README.md
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README.md
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# m3u8-rs
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[](https://docs.rs/m3u8-rs)
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A Rust library for parsing m3u8 playlists (HTTP Live Streaming) [link](https://tools.ietf.org/html/draft-pantos-http-live-streaming-19).
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A Rust library for parsing m3u8 playlists (HTTP Live Streaming) [link](https://datatracker.ietf.org/doc/html/rfc8216).
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Uses the [`nom` library](https://github.com/Geal/nom) for all of the parsing.
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# Installation
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To use this library, add the following dependency to `Cargo.toml`:
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```toml
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[dependencies]
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m3u8-rs = "1.0.6"
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```
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Also available on [crates.io](https://crates.io/crates/m3u8-rs)
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# Documentation
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Available [here](https://rutgersc.github.io/doc/m3u8_rs/index.html)
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# Examples
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A simple example of parsing a playlist:
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```rust
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use m3u8_rs::playlist::Playlist;
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use std::io::Read;
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let mut file = std::fs::File::open("playlist.m3u8").unwrap();
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let mut bytes: Vec<u8> = Vec::new();
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file.read_to_end(&mut bytes).unwrap();
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let parsed = m3u8_rs::parse_playlist_res(&bytes);
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match parsed {
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Ok(Playlist::MasterPlaylist(pl)) => println!("Master playlist:\n{}", pl),
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Ok(Playlist::MediaPlaylist(pl)) => println!("Media playlist:\n{}", pl),
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Err(e) => println!("Error: {:?}", e)
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}
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```
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In the example above, `parse_playlist_res(&bytes)` returns a `Result<Playlist, IResult>`. It uses
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the output of `parse_playlist(&bytes)` behind the scenes and just converts the `IResult` to a `Result`.
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Here is an example of using the `parse_playlist(&bytes)` with `IResult` directly:
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```rust
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use m3u8_rs::playlist::Playlist;
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use std::io::Read;
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use nom::IResult;
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let mut file = std::fs::File::open("playlist.m3u8").unwrap();
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let mut bytes: Vec<u8> = Vec::new();
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file.read_to_end(&mut bytes).unwrap();
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let parsed = m3u8_rs::parse_playlist(&bytes);
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match parsed {
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IResult::Ok((i, Playlist::MasterPlaylist(pl))) => println!("Master playlist:\n{}", pl),
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IResult::Ok((i, Playlist::MediaPlaylist(pl))) => println!("Media playlist:\n{}", pl),
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IResult::Error(e) => panic!("Parsing error: \n{}", e),
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IResult::Incomplete(e) => panic!("Parsing error: \n{:?}", e),
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}
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```
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Currently, the parser will succeed even if REQUIRED attributes/tags are missing from a playlist (such as the `#EXT-X-VERSION` tag).
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The option to abort parsing when attributes/tags are missing may be something to add later on.
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# Structure Summary
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All the details about the structs are taken from https://tools.ietf.org/html/draft-pantos-http-live-streaming-19.
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```rust
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// Short summary of the important structs in playlist.rs:
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//
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pub enum Playlist {
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MasterPlaylist(MasterPlaylist),
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MediaPlaylist(MediaPlaylist),
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}
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pub struct MasterPlaylist {
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pub version: usize,
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pub variants: Vec<VariantStream>,
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pub session_data: Option<SessionData>,
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pub session_key: Option<SessionKey>,
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pub start: Option<Start>,
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pub independent_segments: bool,
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pub alternatives: Vec<AlternativeMedia>,
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pub unknown_tags: Vec<ExtTag>,
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}
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pub struct MediaPlaylist {
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pub version: usize,
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pub target_duration: f32,
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pub media_sequence: u64,
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pub segments: Vec<MediaSegment>,
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pub discontinuity_sequence: u64,
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pub end_list: bool,
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pub playlist_type: MediaPlaylistType,
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pub i_frames_only: bool,
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pub start: Option<Start>,
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pub independent_segments: bool,
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}
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pub struct VariantStream {
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pub is_i_frame: bool,
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pub uri: String,
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pub bandwidth: String,
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pub average_bandwidth: Option<String>,
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pub codecs: String,
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pub resolution: Option<String>,
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pub frame_rate: Option<String>,
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pub audio: Option<String>,
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pub video: Option<String>,
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pub subtitles: Option<String>,
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pub closed_captions: Option<String>,
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pub alternatives: Vec<AlternativeMedia>,
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}
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pub struct MediaSegment {
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pub uri: String,
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pub duration: f32,
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pub title: Option<String>,
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pub byte_range: Option<ByteRange>,
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pub discontinuity: bool,
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pub key: Option<Key>,
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pub map: Option<Map>,
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pub program_date_time: Option<String>,
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pub daterange: Option<String>,
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pub unknown_tags: Vec<ExtTag>,
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}
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```
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Examples can be found in the `examples` folder.
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