# SRT streaming (/en/realtime-media/rtmp-gateway/reference/srt-streaming)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

This guide explains how to push streams to Media Gateway using the SRT protocol.

## Understand the tech [#understand-the-tech]

SRT (Secure Reliable Transport) is an open-source protocol developed by Haivision and promoted by the SRT Alliance. It provides secure, high-quality, low-latency video streaming. Compared to RTMP, SRT performs better for live streaming over unstable network connections.

When using the SRT protocol to push streams to Media Gateway, the following codecs are supported:

* **Video**: H.264, H.265
* **Audio**: AAC, OPUS

## Configure with OBS [#configure-with-obs]

Set up SRT streaming in OBS Studio by configuring the server and stream key settings.

1. In the **Server** field, enter your streaming domain name in the following format:

   ```text
   srt://{streaming_domain_name}:6001
   ```

![Server settings](https://assets-docs.agora.io/images/media-gateway/srt-server-setting.png)

You can use the Agora unified domain name or bind your own domain name.

* To use the unified domain name, use `srtlive-rtcpush-prod-{region}.agoramdn.com`. Replace `{region}` with your actual region. Supported regions are:
  * `na`: North America
  * `eu`: Europe
  * `ap`: Asia, except Mainland China
  * `cn`: Mainland China
* To use your own domain name, contact Agora [technical support](mailto\:support@agora.io) for configuration before use.

2. In the **Stream Key** field, enter the streaming key. To obtain a key, see [Get streaming key](../quickstart#get-streaming-key).

   <CalloutContainer type="info">
     <CalloutDescription>
       When using a custom domain name, you must add domain parameters to your stream key using the format:

       `{streaming_code}?h={streaming_domain_name}`

       This is required because the SRT protocol does not transmit domain name information to the server by default.
     </CalloutDescription>
   </CalloutContainer>

## Configure with FFmpeg [#configure-with-ffmpeg]

Use [`ffmpeg`](https://ffmpeg.org/) to push SRT streams directly from the command line.

* Use the Agora unified domain name:

```text
ffmpeg -re -i input.mp4 -c copy -f mpegts 'srt://srtlive-rtcpush-prod-{region}.agoramdn.com:6001?streamid={streamkey}'
```

* Use a custom domain name:

```text
ffmpeg -re -i input.mp4 -c copy -f mpegts 'srt://example.com:6001?streamid=#!::r={streamkey},h=example.com'
```