Configuring a Link device

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Configuring a Link device - MediaLive

The Link device has properties that control how it behaves when it is streaming. You should set these properties every time you get ready for a new video event.

Open the MediaLive console at https://console.aws.amazon.com/medialive/.
In the navigation pane, choose Link input devices. Find the Link that you want. If there are many devices listed, enter part of the name to filter the list.
Choose the hyperlink for the device. The Device details page for this device appears.
Choose Modify then Configure device. Change fields. For details about each field, see the sections after this procedure. Then choose Update.

MediaLive sends the new values (except for the name) to the devices, so that the device can update itself.
Display the Device details page and take the appropriate action:
- If the device is not attached to a MediaLive input or a MediaConnect flow, watch for the state of the device to return to Idle. You can now start the channel (which automatically starts the device), or you can start the device and the flow.
- If the device is currently attached to a MediaLive input or a MediaConnect flow that is active, watch for the state of the device to return to In use. Note that there is no need for you to restart the input or flow.

Field	Description
Name	Enter a descriptive nickname for the device, for use only in MediaLive.
Input source	Configures the source that Link sends to MediaLive: SDI or HDMI. If the device usually has only one source, choose Auto. Link will send the only source, or will send the first source that it encounters. If the device frequently has sources active on both SDI and HDMI, you must specify which source you want the device to send. You must change this value whenever you want to use the other source.
Maximum bitrate	Set a value if you want to throttle the delivery bitrate to MediaLive. Leave this field blank to let the device determine the bitrate that is best for the network conditions between the device and MediaLive.
Latency	Set the device buffer size (latency). A higher latency value means a longer delay in transmitting from the device to MediaLive, but improved resiliency. A lower latency value means a shorter delay, but less resiliency. If you leave this field blank, the service uses the default value. Default: 1000 ms (HD devices) or 2000 ms (UHD devices). Minimum: 0 ms. Maximum: 6000 ms.
Availability Zone	The Availability Zone (AZ) for the device. This field has an effect only when the device is attached to a MediaLive input. It is ignored when the device is attached to a flow. You should change the Availability Zone for the device whenever the device needs to belong to a different Availability Zone. Key use cases for changing the Availability Zone are the following: If you want to use the device in a single-pipeline channel with multiple inputs, where several inputs are Availability Zone aware. All the inputs must use the same Availability Zone (or the two Availability Zones, for a standard-class input). If you want to use the device in a standard channel (two pipelines) in order to implement pipeline redundancy. You can change the Availability Zone only when the device is attached to a MediaLive input. Typically you change the Availability Zone only when you're deploying it to use it with a new channel. Even if you stop the channel (which automatically stops the device), you can't simply change the Availability Zone. Doing so would probably make the channel inoperable.
Codec	This field applies only when the device is connected to a MediaConnect flows. Set this field to the codec you want to use for the event that you are getting ready for. The default is HEVC. Note the following: If you use the device only for MediaLive inputs, ignore this field. The device always sends HEVC content to a MediaLive input. You might use the device for both MediaLive inputs and MediaConnect flows. You can choose the codec for MediaConnect. But MediaLive is always HEVC, and when you connect a MediaLive input, the field value automatically switches to HEVC. Therefore, whenever you switch back to MediaConnect, make sure to set the field to the codec that you want.
Input resolution	This field applies only if the device is a UHD device and only when the device is the source for a MediaLive input. Choose the resolution to match the resolution that the device is sending, either HD or UHD. MediaLive uses the value you specify here to calculate the input charges that you will incur — either the charge for HD or the charge for UHD. Note the following: MediaLive doesn't use the value to determine what is actually in the video for decoding purposes. At ingest time, it still inspects the video to detect the resolution. You might want to change input resolution for a device that is attached to a MediaLive input. To do this, you must stop the channel, make the change, then restart the channel. This field is ignored when the device is attached to a MediaConnect flow. In that case, charges aren't based on the input resolution. Instead they are based on the length of time that the flow is active.