# Updating a flow


You can change a flow's size, source, entitlements, outputs and several other settings. You can't change the flow's name, ARN, or Availability Zone. For more information, see the following topics: 
+ [Updating the flow size](flows-update-size.md)
+ [Updating the flow NDI® configuration](flows-update-ndi-configuration.md)
+ [Managing tags on a flow](flows-manage-tags.md)
+ [Updating the source](source-update.md)
+ [Updating outputs](outputs-update.md)
+ [Updating media streams](media-stream-update.md)
+ [Updating entitlements](entitlements-update.md)
+ [Adding a VPC interface to a flow](vpc-interface-add.md)

# Updating the flow size


Updating the flow size allows you to modify the processing capacity and feature set that's available for your MediaConnect flow. 

**Important**  
You can only update **Medium** flows to **Large** or **Large** flows to **Medium**. 

## Prerequisites

+  The following procedure assumes that you’ve already created a flow. 
+  The flow must be inactive. If the flow is active, you must [stop the flow first](https://docs.aws.amazon.com/mediaconnect/latest/ug/flows-stop.html). 
+  If you are updating the flow size from **Large** to **Medium** and the flow has an NDI® source or output, you must [update the source](source-update.md) to a standard source, [remove the NDI output](outputs-remove.md) (if exists), and [disable the NDI configuration](flows-update-ndi-configuration.md) before updating the flow size. 

## Procedure


**To update the flow size of an existing flow (console)**

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

1. On the **Flows** page, choose the name of the flow that you want to update.

   The details page for that flow appears.

1. In the **Details** section, choose **Flow actions** and then choose **Update flow size**. 

1. Select the flow size. 

1. Choose **Update**.

# Updating NDI configuration


Updating the flow NDI® configuration allows you to determine how this flow communicates with the rest of your NDI environment. 

**Important**  
The NDI configuration is available only for **Large** flows. 

## Prerequisites

+  The following procedure assumes that you’ve already created a **Large**flow. 

## Procedure


**To update the NDI configuration of an existing flow (console)**

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

1. On the **Flows** page, choose the name of the flow that you want to update.

   The details page for that flow appears.

1. In the **NDI configuration** section, choose **Edit**. 

1. Set **Flow NDI support** to **Enabled** to enable NDI, or **Disabled** to disable NDI. 

1. Enter or update the NDI machine name.
   + This name is used as a prefix to help you identify this flow source as an NDI receiver in your network. For example, if you enter **MACHINENAME**, your flow source will appear to your NDI senders as **MACHINENAME (ProgramName)**. 
   + If you don’t enter a name, MediaConnect generates a unique 12-character ID from the flow's ARN. 

1. Update the NDI discovery servers. You can add up to three discovery servers. For each discovery server, provide the following information: 
   + Enter the discovery server IP address (IPv4 format). 
   + Specify a port number if you’re not using the default (5959). 
   + Select the appropriate VPC interface adapter. 

1. Choose **Update**.