Some breaking changes were introduced with v1.0.0-rc.1. Here is a migration guide:

`appendTrack` has been renamed to `shiftTrack`.

before:

const track = composition.appendTrack(VideoTrack);

after:

const track = composition.shiftTrack(VideoTrack);

`appendClip` has been renamed to `add`.

before:

const clip = await composition.appendClip(new Clip());
// when using tracks
const clip = await track.appendClip(new Clip());

after:

const clip = await composition.add(new Clip());
// when using tracks
const clip = await track.add(new Clip());

before:

const track = composition.appendTrack(VideoTrack).position('bottom');

after:

const track = composition.shiftTrack(VideoTrack).layer('bottom');

a new method for creating tracks has been introduced:

const track = composition.createTrack('video');
// equivalent to
const track = composition.shiftTrack(VideoTrack);

This enabled us to add a new new method to the MediaClip for creating captions, which was previously not possible due to circular dependencies:

const audio = new AudioClip(new File(), { transcript: new Transcript() });
await composition.add(audio);
await audio.generateCaptions();

Note the MediaClip needs to be added to the composition for the generateCaptions method to be available.