AWS Elemental MediaLive feature rules and limits
The following table provides a summary of many of the rules and constraints that apply to AWS Elemental MediaLive features. You can't change any of these constraints.
MediaLive also includes quotas, which you can change. For more information about quotas, see Quotas in AWS Elemental MediaLive .
|
Resource or feature |
Constraint or rule |
|---|---|
| Input media | The input must include video. MediaLive can't ingest source content that doesn't include
video. The source content can contain video, or it can contain video and audio. In
addition,
it can contain captions, but captions are always optional.
For information about input types, see Supported Input Types and Upstream Systems. |
| Input number, live inputs |
You can attach 0 to 2 live inputs to a channel, either as push inputs, pull inputs, or both. Note that if you set up a failover pair (to implement automatic input failover), you use up this quota and can't attach another live input to the channel. |
| Input number, file inputs |
You can attach up to 20 inputs to a channel. After you have counted the live inputs, the remainder can be file inputs. File inputs are always pull inputs. |
| Input number, Elemental Link inputs | You can attach 0 or 1 Elemental Link inputs. This input is a live input, so it counts towards your maximum number of live inputs. |
| Input types – in multiple-input channels |
These restrictions apply to the different input types that can be in the "pool" of inputs attached to one channel:
|
| Output, types | Maximum of one archive output groups in a channel.
For information about output types, see Supported Containers and Downstream Systems. |
| Maximum of three frame capture output groups in a channel.
For information about output types, see Supported Containers and Downstream Systems. |
|
| A channel that includes a UHD output can include only one UHD output, and it can't
include other types of outputs.
The maximum number of channels with UHD is a quota that you can change, as described in Quotas in AWS Elemental MediaLive . The maximum number of outputs in this type of channel is a limitation. You can't change it. |
|
| Output, resolutions | Standard definition (SD) video is supported with all codecs. For information about supported output codecs, see Supported Codecs for Outputs. |
| High definition (HD) video is supported with H.264 and H.265. | |
| Ultra-high definition (UHD or 4K) video is supported with H.265.
For information about output video resolutions, see Supported Codecs for Outputs. |
|
| Multiplexes |
Each multiplex produces only one MPTS. For information about multiplex, see Multiplex and MPTS in AWS Elemental MediaLive. |
| All multiplex programs must include video. | |
| Multiplexes, programs in a multiplex | Maximum of 20 programs per multiplex. |
| Each program in a multiplex is single use. It is attached only to one multiplex, and you can use it only for that multiplex. | |
| Multiplexes, channels in a multiplex | Each channel contains one and only one output group, of type multiplex. It can't contain any other type of output group. |
| Each channel is single use. You can attach it to only one program in the multiplex. You can use it only for that multiplex. | |
| Image Overlays | Maximum of eight different overlays (layers) active at one time in a channel. This
means
that the video can show up to eight different overlays at the same time.
For information about image overlay, see Working with Image Overlays. |
| Schedule and input switches | The schedule can contain any number of scheduled input switching actions.
For information about input switching, see Input Switching in AWS Elemental MediaLive. |
| You can switch to a specific input as many times as you want. | |
| Frequency of API requests | 5 steady-state TPS (transactions per second) |
| 30 burst TPS |
