---
page_type: error
code: 53664
message: "53664: Invalid URL for external S3 bucket in composition settings"
level: ERROR
product: Programmable Video
---

## Description

The S3 bucket URL configured in your account's composition settings is not valid.

Media composition has been marked as FAILED and will not be retried.

### Possible Causes

- If you have specified your own bucket, this is most likely due to the fact that the URL does not conform to an S3 URL.

### Possible Solutions

- In the composition settings section of your account's console, set a valid S3 URL for uploading media or disable the external storage (media will be uploaded to the default bucket).