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Add Neon Sample Rec for Neon Player #683

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2 changes: 2 additions & 0 deletions neon/neon-player/index.md
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Once you have the recording, open Neon Player and drag-and-drop the folder into the application window.

Don't have a recording yet? [Download a sample recording](https://api.cloud.pupil-labs.com/v2/workspaces/3d240903-cbf7-485a-84b1-3498f00e236c/recordings.zip?id=7c141c32-7a8d-411c-9428-70d16de9a9ea&share-key=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1aWQiOiJmY2Q5NWJkYS1lZjVhLTRlN2YtOWZiYi01NTc1NWFhYWQzZTAiLCJtZXRob2QiOiJHRVQiLCJwYXRoIjoiL3YyL3dvcmtzcGFjZXMvM2QyNDA5MDMtY2JmNy00ODVhLTg0YjEtMzQ5OGYwMGUyMzZjL3JlY29yZGluZ3MuemlwIiwicXVlcnkiOiJpZD03YzE0MWMzMi03YThkLTQxMWMtOTQyOC03MGQxNmRlOWE5ZWEiLCJleHAiOjE4NjkyMjA3NzkuMjEzMDEzNn0.xfR9ZqOWmql1EmAkqc_mszL63hER_s8HziAzfn89-QI "Download sample recording to use in Neon Player").

::: info
Neon Player will **never** remove or overwrite any of your raw data gathered at the time of recording. Instead, it will create a new folder, `neon_player`, which contains the Neon Player compatible files.
:::
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::: info

Recordings extracted from the phone do not contain [eye state](../data-collection/data-streams/#_3d-eye-states) or [pupillometry](../data-collection/data-streams/#pupil-diameters), and the sampling rate matches that at the time of recording.

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Recordings downloaded from [Pupil Cloud](./../pupil-cloud/) will be at 200Hz.
:::

## Neon Player Window

![Neon Player Callout](./pp-callout.jpg)

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1. **Graphs**: This area contains performance graphs. The graphs display `CPU` and `FPS` (FPS = Video playback speed).
1. **Hot Keys**: This area contains clickable buttons for plugins.
1. **Timeline Events**: Plugins can add temporal events to this expandable panel.
1. **Timeline**: Control the playback of the video with the play/pause button (or spacebar on your keyboard). Drag the playhead (vertical line) to the desired point in time.

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- **Trimming**: Drag the green rounded rectangles at either end of the timeline to set beginning and ending trim markers. The trim section markers specify the section of the video/data to export.
- **Frame Stepping**: You can use the arrow keys on your keyboard or the `<<` `>>` buttons to advance one frame at a time while the playback is paused.
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- Start **Neon Player** and load a recording.
- Open a Plugin - From the `Plugin Manager` GUI menu (which can be found in the Sidebar), toggle any Plugin of your choice. The `Vis Circle` plugin is activated by default.
- Playback - press the play button or `space` bar on your keyboard to view the video playback with visualization overlay, or drag the playhead in the seek bar to scrub through the dataset.

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- Set trim marks - drag the green rounded rectangle at the beginning and end of the seekbar to set the trim marks. This will set the start and end frame for the exporter and for other plugins.

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- Export Video & Raw Data - From the `Plugin Manager` view, load the `World Video Exporter` plugin and the `Raw Data Exporter` plugin. Press `e` on your keyboard or the ⬇ `download icon` button in the left hand side of the window to start the export.
- View the exported data in the `exports` directory.
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