NatReader API

NatReader is a lightweight video decoding API designed for transcoding applications. It currently supports decoding frames from local video files (*.mp4).

Setup Instructions

NatReader can be installed using the Unity Package Manager. In your manifest.json file, add the following dependency:

{
  "dependencies": {
    "com.natsuite.natreader": "git+https://github.com/natsuite/NatReader"
  }
}

Decoding Video Frames

First, create a frame reader for your media file. Currently, NatReader only supports MP4 video files:

var videoPath = "...";
var reader = new MP4Reader(videoPath);

With the reader, you can decode frames using the Read method:

foreach (var (pixelBuffer, timestamp) in reader.Read()) {
    // Use pixel buffer // This is always a `byte[]` in RGBA32 layout
    ...
}

Finally, when you are done reading frames, make sure to dispose the reader:

reader.Dispose();

Requirements

• Unity 2019.2+
• Android API Level 24+
• iOS 11+
• macOS 10.13+