# Supported upstream systems for file inputs
<a name="supported-inputs-file-types"></a>

This table describes the different upstream systems that can provide file content to Elemental Live. 

The rows are sorted by type of input.


|  Upstream system   |  Use case   |  Type of input   |  Protocol   |  Push or pull?   | 
| --- | --- | --- | --- | --- | 
| Amazon S3 bucket  | Pull a VOD asset from an Amazon S3 bucket, using a secure or unsecure connection.  | File input  | custom protocol s3:// or s3ssl://  | Pull  | 
| Aspera server  | Pull a VOD asset from a server that supports the Aspera data transfer protocol.  | File input  | Custom protocol aspera://  | Pull  | 
| A directory on the Elemental Live appliance  | Pull a VOD asset that is stored on a directory on the Live appliance.  | File input  | Not applicable  | Pull  | 
| FTP or SFTP server  | Pull a VOD asset from a server that supports FTP or SFTP.  | File input  | ftp:// or sftp://  | Pull  | 
| SCP server  | Pull a VOD asset from a server that supports SCP.  | File input  | scp://  | Pull  | 
| Amazon S3 bucket  | Pull an HLS VOD asset from an Amazon S3 bucket, using a secure or unsecure connection.  | HLS file input  | custom protocol s3:// or s3ssl://  | Pull  | 
| HTTP or HTTPS server  | Pull an HLS VOD asset from a server that supports HTTP or HTTPS.  | HLS file input  | http:// or https://  | Pull  |