alass-util

A Rust convenience API for subtitle synchronization with alass-core

alass-core is a fantastic library which performs fast and accurate subtitle synchronization. alass-util is a wrapper library that provides various facilities to make integrating subtitle synchronization into your Rust program easier. Such facilities include:

• Loading and saving subtitle files
• Processing audio for voice activity using the webrtc-vad crate
• Converting voice activity to reference timespans
• Automatic subtitle character set detection
• Saving and loading of reference timespans to disk
• Experimental support for automatic framerate correction
• Experimental support for "cleaning" voice activity data

What this crate does not provide:

• Facilities for extracting and resampling audio streams from media files

Docs

See docs.rs for API details.

Voice Activity Detector

This crate provides two options for voice activity detection:

1. WebRTC VAD: The default detector used by this crate. Fast but lower quality results. See vad-webrtc Cargo feature.
2. Silero: LSTM model with much better results but longer processing time. See the vad-silero-tract or vad-silero-onnx runtime depending on your choice of ONNX runtime.

FFI

Not using Rust? See the alass-ffi companion crate for C bindings.

License

Everything in this repo is GPL-3.0 unless otherwise specified