Webhooks in Video Workflows: Automating Your Pipeline

Introduction to Webhooks

Webhooks let one system notify another when something happens, by sending an HTTP request to a URL you control. In video workflows they are often used for transcoding completion, stream lifecycle events, or asset availability. The receiving server validates the request (ideally with a signature), responds quickly with a 2xx status, and queues any heavy work.

Where webhook URLs are configured

Configuration is always provider-specific. You register your public HTTPS endpoint in that vendor's dashboard or API (encoding service, live platform, payment provider, etc.): paste the callback URL, choose event types, and store any signing secret they give you. There is no universal flow—follow the documentation for the product you actually integrate with.

DCAST and developer-facing products

The public creator experience at dcast.tv does not include a generic "Webhooks" settings page where you add arbitrary URLs for events such as "transcoding finished" or "stream started" as described in outdated SEO drafts. Do not follow instructions that tell users to log into a dcast.tv dashboard and click "manual dashboard webhook action"—that is not how the consumer product works.

Partner and API integrations (including documentation and tooling aimed at developers or Pro/partner surfaces) may describe callbacks, signed events, or roadmap items in the official Partner API and developer documentation, not in a fictional consumer dashboard flow. Treat any blog copy that promises a specific dcast.tv UI unless it matches current product docs as outdated.

Common webhook events in video workflows

Typical event names (exact strings vary by provider) include:

• Transcoding or encoding finished — asset ready for playback or next pipeline step
• Stream started / ended — live lifecycle for analytics or recording
• Recording ready — replay or VOD available
• Upload completed — ingest finished

Understanding webhook payloads

Payloads are usually JSON. Always read your provider's schema; below is a generic example only:

```json

{

"event": "transcoding_finished",

"video_id": "12345",

"status": "success",

"filename": "example_video.mp4",

"timestamp": "2023-10-05T12:00:00Z"

}

```

Handling webhooks with Node.js

Setting up a simple listener

```javascript

const express = require('express');

const bodyParser = require('body-parser');

const app = express();

const port = 3000;

app.use(bodyParser.json());

app.post('/webhook', (req, res) => {

const payload = req.body;

console.log('Received webhook event: ' + payload.event);

res.status(200).send('Webhook received');

});

app.listen(port, () => {

console.log('Webhook server listening on port ' + port);

});

```

Example: branch on event type

```javascript

app.post('/webhook', (req, res) => {

const payload = req.body;

if (payload.event === 'transcoding_finished') {

console.log('Transcoding finished for video ' + payload.video_id);

}

res.status(200).send('Webhook received');

});

```

Error handling and retries

Implement idempotency (e.g. store event IDs), return 2xx only after you have safely accepted the event, and process long tasks asynchronously so the sender does not time out.

Best practices

1. Security: HTTPS, verify signatures, reject invalid requests.

2. Idempotency: Handle duplicate deliveries.

3. Fast ACK: Respond quickly; do heavy work in a queue.

4. Monitoring: Log deliveries and failures.

Conclusion

Webhooks are a standard way to automate video pipelines when your actual platform exposes them. Verify behavior against current product documentation—do not rely on placeholder dashboard steps that do not exist on a given product.

Next steps and resources

• Use your encoding or streaming vendor's official docs for event types, payload format, and signature verification.
• For DCAST, rely on published Partner API / developer materials for integration scope; avoid assuming a consumer-dashboard webhook UI on dcast.tv.