# Create an MP4 input
<a name="setup-input-mp4"></a>

After you have obtained information from the upstream system, you can create an MP4 input.

**To create an MP4 pull input**

1. Make sure that you have the information from [step 1](setup-mp4-obtain-info.md).

1. If this input is being used in a multiple-input channel, you should have decided whether to set it up as a static input or a [dynamic input](dynamic-inputs.md). You might need to modify the URLs you obtained from the upstream system:
   + If the input is a static input, don't modify the URLs.
   + If the input is a dynamic input, set up the URL as an optional absolute portion and a required variable portion (\$1urlPath\$1). For examples, see the table after this procedure.

     We recommend that you use the format <protocol>/\$1urlPath\$1.

1. Open the MediaLive console at [https://console.aws.amazon.com/medialive/](https://console.aws.amazon.com/medialive/).

1. In the navigation pane, choose **Inputs**. On the **Inputs** page, choose **Create input**.

1. Complete the **Input details** section:
   + **Input** name – enter a name.
   + **Input type** – choose **MP4**. 

1. In the **Input class** section, choose the class for this input:
   + STANDARD\$1INPUT
   + SINGLE\$1INPUT

1. In the **Input sources** section, enter the URLs you previously obtained: 
   + If the input is a standard-class input, complete both fields, to provide two URLs.
   + If the input is a single-class input, complete the first field with the URL that you obtained and leave the second field empty.

   If the upstream system requires that you provide user credentials, you must also enter the user name and password key for accessing the location. These credentials are stored on the Systems Manager Parameter Store. For more information, see [About the feature for creating password parameters](requirements-for-EC2.md#about-EC2Password).

1. In the **Tags **section, create tags if you want to associate tags with this input. For more information, see [Tagging resources](tagging.md).

1. Choose **Create**.

   MediaLive creates the input and adds it to the list of inputs. The input specifies either one or two sources. The sources don't appear in the list, but if you choose the **Name** link, the details page shows them. 

## Formats for the URL in a dynamic input
<a name="input-dynamic-urlpath"></a>

The following table describes the different formats for the URL in a dynamic input. 


| Format | Description | Example | Example of the \$1urlPath\$1 | 
| --- | --- | --- | --- | 
| <protocol>/\$1urlPath\$1 | URL has only the protocol in the absolute portion | s3ssl://\$1urlPath\$1 | amzn-s3-demo-bucket/my-movie.mp4 | 
| <protocol and path>/\$1urlPath\$1 | URL has the protocol and path in the absolute portion | mediastoressl://f31z.data.mediastore.us-west-2.amazonaws.com/movies/\$1urlPath\$1  | my-movie.mp4 | 
| \$1urlPath\$1 | URL has only the variable portion | \$1urlPath\$1 | s3ssl://amzn-s3-demo-bucket/my-movie.mp4 |