# Welcome to Zoom Video SDK

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[Zoom Video SDK](/docs/video-sdk/) enables developers to build custom video experiences with Zoom's core technology. Keep your existing user interface and let Zoom's global infrastructure power the real-time audio and video.

Start migrating with 10,000 free minutes per month.

Select a platform to start migrating from Twilio Programmable Video to Zoom Video SDK. Migrate as fast as 1 week per platform.

-   [Android](/docs/video-sdk/twilio/android/)
-   [iOS](/docs/video-sdk/twilio/ios/)
-   [Web](/docs/video-sdk/twilio/web/)

Read about some [Twilio migration success stories](/twilio/).

## Web migration example

Keep your existing user interface and simply swap out your Twilio Video code for Zoom Video SDK code. Migrate as fast as 1 week per platform.

```javascript
// Twilio Video:
import * as TwilioVideo from "twilio-video";

var twilioVideo = TwilioVideo;
var twilioRoom;

twilioVideo.connect(TOKEN, { name: "yourName" }).then((room) => {
    twilioRoom = room;
});
```

```javascript
// Zoom Video SDK:
import ZoomVideo from "@zoom/videosdk";

var zoomVideo = ZoomVideo.createClient();
var zoomSession;

zoomVideo.init("en-US", "Global", { patchJsMedia: true }).then(() => {
    zoomVideo
        .join("sessionName", TOKEN, "yourName", "sessionPasscode")
        .then(() => {
            zoomSession = zoomVideo.getMediaStream();
        });
});
```

```javascript
// Twilio Video:

// Start:
twilioVideo
    .createLocalVideoTrack({
        height: { ideal: 720, min: 480, max: 1080 },
        width: { ideal: 1280, min: 640, max: 1920 },
        aspectRatio: 16 / 9,
    })
    .then((localVideoTrack) => {
        twilioRoom.localParticipant.publishTrack(localVideoTrack);

        const localMediaContainer = document.getElementById(
            "twilio-self-view-div",
        );

        localMediaContainer.appendChild(localVideoTrack.attach());
    });

// Stop:
twilioRoom.localParticipant.videoTracks.forEach((publication) => {
    publication.unpublish();
    publication.track.stop();
    var selfTwilioVideo = document.getElementById("twilio-self-view-div");
    selfTwilioVideo.querySelector("video").remove();
});
```

```javascript
// Zoom Video SDK:

// Start:
zoomSession.startVideo().then(() => {
    zoomSession
        .attachVideo(zoomVideo.getCurrentUserInfo().userId, RESOLUTION)
        .then((userVideo) => {
            document
                .querySelector("video-player-container")
                .appendChild(userVideo);
        });
});

// Stop:
zoomSession.stopVideo().then(() => {
    zoomSession.detachVideo(USER_ID);
});
```

```javascript
// Twilio Video:
twilioRoom.on("participantConnected", (participant) => {
    participant.on("trackSubscribed", (track) => {
        document
            .getElementById("twilio-user-view-div")
            .appendChild(track.attach());
    });

    participant.on("trackUnsubscribed", (track) => {
        var selfTwilioVideo = document.getElementById("twilio-user-view-div");
        selfTwilioVideo.querySelector("video").remove();
    });
});
```

```javascript
// Zoom Video SDK:
zoomVideo.on("peer-video-state-change", (payload) => {
    if (payload.action === "Start") {
        zoomSession.attachVideo(payload.userId, 3).then((userVideo) => {
            document
                .querySelector("video-player-container")
                .appendChild(userVideo);
        });
    } else if (payload.action === "Stop") {
        zoomSession.detachVideo(payload.userId);
    }
});
```

```javascript
// Twilio Video:

// Start Audio:
twilioVideo.createLocalAudioTrack().then((localAudioTrack) => {
    twilioRoom.localParticipant.publishTrack(localAudioTrack);
    const audioElement = localAudioTrack.attach();
    document.body.appendChild(audioElement);
});

// Unmute:
twilioRoom.localParticipant.audioTracks.forEach((publication) => {
    publication.track.enable();
});

// Mute:
twilioRoom.localParticipant.audioTracks.forEach((publication) => {
    publication.track.disable();
});
```

```javascript
// Zoom Video SDK:

// Start Audio:
zoomSession.startAudio();

// Unmute:
zoomSession.unmuteAudio();

// Mute:
zoomSession.muteAudio();
```

```javascript
// Twilio Video:
twilioVideo.disconnect();
```

```javascript
// Zoom Video SDK:
zoomVideo.leave();
```

## Feature map

The Zoom Video SDK has [complete feature parity](/docs/video-sdk/twilio/map/) with the Twilio Video platform, plus many additional features to build with. This is not just a 1:1 migration, it's access to even more possibilities.

## Migration services

Migrate faster with Zoom's support options.

-   Dedicated Migration Engineers: Hands on migration experts to help during your proof of concept (POC). Ask your [Zoom account rep](https://www.zoom.com/en/video-sdk/#contact-block-get-started-with-video-sdk-from-zoom) to get connected.
-   Premier Developer Support: [Support plans for after your POC](https://explore.zoom.us/en/support-plans/developer/).
-   Professional Migration Services: Have a [Certified Zoom Developer Partner](https://explore.zoom.us/en/lp/developer-partner-services/) handle the migration for you.

## Read more

-   [Zoom and Twilio migration announcement](https://www.zoom.com/en/blog/welcome-twilio-video-developers-3-reasons-why-zoom-s-video-sdk-is-a-win-for-you/)
-   [Zoom Video SDK Performance Report](https://www.zoom.com/en/resources/video-sdk-performance-guide/)
-   [Zoom Video SDK Web Stack (WebRTC, WebAssembly, custom code)](https://www.zoom.com/en/blog/how-zooms-video-sdk-stacks-up/)
-   [Zoom Video SDK Fact Sheet](/blog/video-sdk-fact-sheet/)

## Get started

Get started with the [official migration guides](#migration-guides). For questions, contact us.

-   [Developer Sales](https://www.zoom.com/en/video-sdk/#contact-block-get-started-with-video-sdk-from-zoom)
-   [Developer Forum](https://devforum.zoom.us/c/video-sdk/)
-   [Developer Support](/support/)
-   [Developer Partner Services](https://explore.zoom.us/en/lp/developer-partner-services/)

_See [Video SDK Plans & Pricing](https://zoom.us/pricing/developer)._