# Audio VAST Creative

This page explains how to upload an audio file to Eskimi DSP as an Audio VAST creative. One thing to remember: an audio creative supports only an audio track, and video can’t be used.

### Audio File Requirements

The audio file itself usually has the following requirements:

<table id="bkmrk-requirementvalueform"><thead><tr><th>Requirement</th><th>Value</th></tr></thead><tbody><tr><td>Format</td><td>MP3, WAV, WMA or OGG</td></tr><tr><td>Bitrate</td><td>At least 128 kbps</td></tr><tr><td>Size</td><td>Max 50 MB</td></tr><tr><td>Duration</td><td>15 to 30 seconds mostly, with very limited inventory supporting 60 s creatives</td></tr></tbody></table>

### How to Create an Audio VAST Creative

1. Log in to your DSP account, go to **Creative Sets**, and click **Add creative set**.  
    [![image-1613663648296.png](https://manual.eskimi.com/uploads/images/gallery/2021-02/scaled-1680-/image-1613663648296.png)](https://manual.eskimi.com/uploads/images/gallery/2021-02/image-1613663648296.png)  
    [![image-1613663832858.png](https://manual.eskimi.com/uploads/images/gallery/2021-02/scaled-1680-/image-1613663832858.png)](https://manual.eskimi.com/uploads/images/gallery/2021-02/image-1613663832858.png)
2. Add a creative title, select **Audio** as the type of your creative set and click save.  
    [![image-1705317440943.png](https://manual.eskimi.com/uploads/images/gallery/2024-01/scaled-1680-/pOxRlCLU6xLXh2j0-image-1705317440943.png)](https://manual.eskimi.com/uploads/images/gallery/2024-01/pOxRlCLU6xLXh2j0-image-1705317440943.png)
3. Select the **Audio VAST** sub-type from the dropdown menu and click save.  
    [![image-1705391110292.png](https://manual.eskimi.com/uploads/images/gallery/2024-01/scaled-1680-/NpKWM4ONYWNvRI8o-image-1705391110292.png)](https://manual.eskimi.com/uploads/images/gallery/2024-01/NpKWM4ONYWNvRI8o-image-1705391110292.png)
4. Select the creative language from the Language filter.
5. Upload the creative audio file by selecting **Choose files**.  
    [![image-1705391241064.png](https://manual.eskimi.com/uploads/images/gallery/2024-01/scaled-1680-/nvUZG4QAUcXlzWpM-image-1705391241064.png)](https://manual.eskimi.com/uploads/images/gallery/2024-01/nvUZG4QAUcXlzWpM-image-1705391241064.png)

### Companion Banners

Audio creatives (10-30% of the current audio inventory, depending on country) also support companion banners (static (95%) and HTML/JS (5%)). For a simple display ad, just upload it by selecting "Choose files". For HTML/JS, add the creative dimensions and upload or paste the creative tag.

We support one companion ad per creative. The companion should be one of the most popular sizes: 300x250px, 320x480px or 480x320px.

In the audio campaign report, under "Event metrics", you will see the "Companion impressions" and "Companion clicks" companion ad performance metrics (if available).

[![image-1705391351804.png](https://manual.eskimi.com/uploads/images/gallery/2024-01/scaled-1680-/JMZcP7CkAj857gO3-image-1705391351804.png)](https://manual.eskimi.com/uploads/images/gallery/2024-01/JMZcP7CkAj857gO3-image-1705391351804.png)

### Summary

Audio VAST creatives are audio-only files uploaded directly to Eskimi DSP: create an Audio creative set, choose the Audio VAST sub-type, set the language and upload the file.

You can add one companion banner per creative in a popular size; its impressions and clicks appear under Event metrics in the report.