> For the complete documentation index, see [llms.txt](https://docs.fluidplayer.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fluidplayer.com/streaming/mpeg-dash.md).

# MPEG-DASH

Dynamic Adaptive Streaming over HTTP (DASH), also known as MPEG-DASH, is a streaming technique compatible with Fluid Player.

A media presentation description (MPD) file contains segmented information. The individual segments are described in [this article](https://www.brendanlong.com/the-structure-of-an-mpeg-dash-mpd.html).

Segments contain information regarding the times, URL, resolution, bit rates etc, which informs the player what to serve to the client depending on the bandwidth availability.

Full details on the MPEG-DASH protocol can be found on the [wikipedia](https://en.wikipedia.org/wiki/Dynamic_Adaptive_Streaming_over_HTTP).

Live Streaming will be signaled by a Live Indicator displayed along with the Control bar.

Fluid Player makes use of [Dash.js](https://github.com/Dash-Industry-Forum/dash.js) to play MPD files. Once an `.mpd` file is set as the source the Fluid Player will play it, as can be seen in the below example.

```html
<video id='dash-video'>
    <source src='stream_dash.mpd' type='application/dash+xml'/>
</video>

<script>
fluidPlayer(
    'dash-video',
    {
        layoutControls: {
            fillToContainer: true
        }
    }
);
</script>
```

## Customizing MPEG-DASH

Fluid Player has hooks that support `dashjs` configuration, a full list of configurable properties can be found in the [official `dashjs` API docs](http://cdn.dashjs.org/latest/jsdoc/index.html).

Below is an example of a configuration where you can set the maximum buffer length and streaming quality with which the video will be started.

```javascript
fluidPlayer('fluid-player', {
    modules: {
        configureDash: (options) => {
            return {
                stableBufferTime: 30, // Max length of buffered video in seconds
                initialBufferLevel: 4, // Starting quality level
                ...options,
            }
        },
        onBeforeInitDash: (dash) => {
            dash.setQualityFor('video', 4); // Programatically set quality level for next segment
        },
        onAfterInitDash: (dash) => {
            dash.setQualityFor('video', 4); // Programatically set quality level for next segment
        },
    }
});
```

For more information on using hooks see the [Advanced configuration](/configuration/advanced-configuration.md) page.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.fluidplayer.com/streaming/mpeg-dash.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.