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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchAWS Elemental Live is an on-premises encoder and transcoder for real-time video. It runs on hardware appliances or virtual machines, takes in live sources, encodes or transcodes them, and sends configured outputs to downstream systems. AWS describes support for UHD resolutions up to 4K, but whether a particular 4K workflow works depends on its input format, output group, codec, licenses, and available processing capacity.
What AWS Elemental Live does—and what it does not
Elemental Live is an encoder within a live video delivery chain, not by itself a complete consumer streaming service. It processes a signal supplied by a source and sends the resulting streams to destinations such as an origin service or packager, which may then deliver them through a CDN to a website or playback device. See AWS’s product overview.
The deployment can be a hardware appliance or a virtual machine on the customer’s premises. The appropriate choice depends on the required interfaces, workload, and capacity evidence for the exact configuration; the product description does not establish a universal throughput figure.
How an Elemental Live workflow is configured
AWS organizes processing around an event. An event identifies the source inputs and defines output groups—the encoding and packaging destinations. When the event starts, Elemental Live ingests the source’s video and associated audio, captions, and metadata, processes them, and sends the configured outputs downstream. AWS describes this process in How Elemental Live works.
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- Identify the source. Specify the live signal and the interface and format that will deliver it. Confirm that required audio, captions, or metadata are available in a form the workflow can use.
- Choose output groups. Define how each output is packaged and where it will be sent. Check the destination’s expected container and playback formats before configuring the event.
- Set output encodes. Choose a supported codec and configure quality and rate-control settings for each output stream.
- Connect downstream delivery. Validate the origin or packager, CDN, and playback endpoints as part of the full chain; a successful encode alone does not establish end-to-end playback.
- Start and monitor the event. Confirm that the source is being ingested and that each configured output reaches its intended downstream system.
4K UHD, color, and input interfaces
AWS treats resolution and color space as separate properties. Elemental Live supports SD, HD, and UHD resolutions, with UHD extending up to 4K; it also supports SDR and HDR color spaces. AWS says SDR can be paired with SD, HD, or UHD, while HDR is typically paired with HD or UHD. Those broad capabilities do not mean every combination is available for every input and output path. Consult AWS’s color space and resolution guidance and verify the exact formats for the selected workflow.
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For SMPTE 2110 specifically, AWS documents uncompressed SD, HD, and 4K video at 4:2:2 chroma sampling and 10-bit depth. It also states that PTP locking is necessary for proper synchronization: without it, media streams may become unsynchronized during processing. These are SMPTE 2110 details, not a guarantee about all interfaces. See AWS’s supported content documentation.
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H.264 and HEVC output choices
Codec support depends on the output group and container, not just the encoder’s general feature list. AWS’s live output matrix lists H.264 and H.265 (HEVC) for DASH and for standard and fMP4 HLS; RTMP lists H.264. Other output groups and containers have their own combinations. Check the exact row for the output group and container you plan to use in AWS’s live output codec matrix.
HEVC input, output, and licensing
HEVC input support and HEVC output licensing are separate considerations. AWS lists HEVC input at 4:2:0 and 4:2:2, each in 8-bit and 10-bit. For output, AWS says 4:2:0 requires the HC license, while 4:2:2 requires purchase of the BCE license pack. AWS also notes that raw outputs and MPEG-2 transport streams support both 4:2:0 and 4:2:2; other containers support only 4:2:0. Confirm the applicable profile, bit depth, chroma sampling, container, and license for the intended path using AWS’s HEVC support table.
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AWS documents accelerated H.264 and HEVC encoding on GPU-enabled systems and says listed codecs have equivalent video quality at equivalent operating points on CPU-only and GPU-enabled appliances. That statement does not establish equal capacity or cost. Compare the exact deployment model and workload; see AWS’s CPU-only and GPU-enabled codec documentation.
Plan performance and picture quality
4K encoding can consume substantial processing capacity. AWS identifies aggregate pixels per second across all outputs as a key factor. Resolution, frame rate, color depth, codec, and rate-control choices affect the workload; AWS’s documented relative ordering places HEVC above AVC in processing demand. This is directional guidance, not a throughput benchmark for every appliance or VM. See AWS’s encoding performance guidance.
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Plan by the complete output workload rather than by the number of events or channels alone. AWS explains that each rendition requires an output encode. An appliance may be able to produce only one output encode if that rendition is 4K, while several lower-resolution renditions may be possible depending on density. Do not assume a fixed channel count or rendition count without capacity confirmation for the exact model and configuration. AWS discusses this in Design the inputs.
Quality controls to evaluate
Settings are configured per output stream. AWS lists controls including rate-control mode and bitrate, frame rate, GOP, quantization, lookahead, and the balance between density and quality. Evaluate image quality against bitrate and compute demand, then check latency requirements and playback-device compatibility. AWS’s video quality guidance describes these controls.
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Encode sharing may reduce compute demand when compatible output groups use the same video encode. It is not a substitute for validating the actual output combination, capacity, and delivery requirements.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Deployment checklist
- Document the source interface, resolution, frame rate, bit depth, chroma sampling, and synchronization requirements.
- List every destination and its required output group, container, codec, and playback support.
- Confirm that the chosen input and output paths support the required formats; do not infer compatibility from UHD or codec support in isolation.
- For HEVC output, verify whether the path needs HC or BCE licensing and check the container-specific chroma limits.
- Estimate the combined workload across all renditions, including resolution, frame rate, codec, and quality settings. Obtain model-specific capacity confirmation rather than relying on a general channel-count claim.
- Validate the complete chain—from source through Elemental Live and downstream origin or packager to CDN and playback endpoint—and plan redundancy appropriate to the service.
For a different use case: keeping a YouTube channel live
Elemental Live is designed for configured live encoding workflows. If the goal instead is to keep a YouTube channel playing uploaded videos continuously, StreamNeo is a simpler cloud option: upload a recording or build a playlist, add the YouTube stream key, and go live. It loops uploaded videos in the cloud, so a computer at home does not need to stay on. StreamNeo is YouTube-only and does not go live from a camera.
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