A Lens preview video helps users visualize your Lens experience before unlocking the Lens. Think of it as a mini trailer for your creation. Previews make your Lenses more compelling and will be visible to the public. 

Preview Video, Best Practices

When creating a preview for your Lens, keep the following best practices in mind:

• Make sure the entirety of the preview video includes the defining elements of the Lens. For example, if your Lens is a face experience, show the Lens applied to a face
• Sometimes, your preview video will be displayed as a static image. Because of this, make sure the first frame of your video is compelling and shows off the defining elements of the Lens
• Keep your preview videos short and to the point
• Make sure your preview videos are nicely lit
• Avoid busy backgrounds as they might distract from the content of your Lens
• While you can submit a static image for your preview, we recommend using a video
• Do note that the Submission Guidelines apply to both the Lens and your Lens preview video 
• Keep preview videos at a 9:16 aspect ratio (vertical video)
• Keep preview videos under 32 MB for videos (10 MB for static images)

Adding Preview Video, Pre Submission

After pressing the Submit button, you'll be taken to the Confirm Submission page. There, click the Add Preview button. 

This will take you to the Add Preview window. Click the Upload button to add your preview. 

Once uploaded, the preview video will go into review. The message Your preview is in review will show until the preview video is approved. 

Once the preview has been added, click Done. 

Updating or Adding Preview Video, Post Submission

You can always submit your Lens and add the preview video later. This also applies to any Lenses submitted before the preview video functionality was added. To add or update a preview video after submission, first open My Lenses by selecting Menu Bar -> Window -> My Lenses. Then, find your Lens entry and click the ... button. In the selection pop-up, select Manage Preview.

This will take you to the Add Preview window. Click the Upload button to add your preview. 

Once the preview has been added, click Done.