# Caption Playback (/docs/methods/playback)



Caption playback is a method to play a pre-recorded subtitle file (.srt or .vtt) during a live event. It is useful for technical testing, or pre-recorded live streaming without the need to schedule it in a [playlist](/docs/project-types/playlist).

## Setup and configuration [#setup-and-configuration]

<img alt="Caption Playback" src="__img0" />

1. In the `Assets` page, under `Custom Caption Assets`, select `Upload File` and add your .SRT or .VTT file.
2. Press `Play` to see the page dedicated to playing the subtitle file.

## Going live [#going-live]

<img alt="Going live" src="__img1" />

Control the playback simply by pressing the `Play`, `Pause` and `Restart` buttons. Scroll through the timeline to see the captions at different times.

Your viewers will see the captions flowing in the [captions browser page](/docs/destinations/browser).

## Options [#options]

<img alt="Options" src="__img2" />

There are a few options you can configure to customize the playback:

* **Autoscroll** — When on, the page is autoscrolling to the current line.
* **Highlight Current Line** — When on, the current line is highlighted and previous lines are slightly faded.
* **Line Numbers** — When on, the line numbers are shown.
* **Show Time** — When on, the timestamps are shown.
* **Style** — The colors, font size, font spacing, presets, etc.

## Playlists vs Playback [#playlists-vs-playback]

A [Playlist](/docs/project-types/playlist) is a type of project that uses a mix of live audio-visual feeds to provide live captions, as well as pre-recorded content. It can generate captions from live content, and also play a subtitle file. It used caption playback functionality to play the subtitle file.

Our [Playback](/docs/methods/playback) feature is a more direct method used to upload third-party (or Line 21) subtitle files and play those captions for your viewers without scheduling them in a playlist.