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Amazon GameLift Streams now supports Custom Aspect Ratio and Dynamic Resolution

What happened
Based on AWS What's New · Jul 27, 2026

Amazon GameLift Streams introduces Custom Aspect Ratio and Dynamic Resolution to improve streaming flexibility and quality across devices and network conditions.

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Key points
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Amazon GameLift Streams now supports Custom Aspect Ratio and Dynamic Resolution, giving you greater control over the streaming experience across diverse player devices and network conditions.
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With Custom Aspect Ratio, you can configure a specific resolution per stream session to match your player's device — including portrait, landscape, ultra-wide, and square aspect ratios.
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This eliminates letterboxing or pillarboxing, delivering native full-screen experiences on mobile phones, tablets, and non-standard displays.
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Specify any resolution from 320 to 4096 pixels per dimension (up to 1080p total pixel budget) using the DisplayConfiguration parameter in the StartStreamSession API.

Amazon GameLift Streams now allows developers to set Custom Aspect Ratio for each stream session, supporting resolutions from portrait to ultra-wide formats. This feature eliminates letterboxing or pillarboxing, ensuring native full-screen experiences on mobile phones, tablets, and non-standard displays. Developers can specify resolutions between 320 and 4096 pixels per dimension, up to a 1080p total pixel budget, using the DisplayConfiguration parameter in the StartStreamSession API or via the AWS Console.

Dynamic Resolution has been added to automatically adjust stream quality based on fluctuating network bandwidth. When bandwidth decreases, the stream reduces resolution to maintain smooth playback without interruptions, then recovers to full quality when conditions improve. This feature is enabled by default for all new stream groups and requires no additional configuration from developers.

To use these features, customers must download the updated Web SDK. Both Custom Aspect Ratio and Dynamic Resolution are available in all AWS Regions where Amazon GameLift Streams is offered, expanding compatibility across global infrastructure.

For further details, developers can refer to the Amazon GameLift Streams Developer Guide under the section titled Custom stream resolution. The update aims to enhance user experience by providing more control over streaming parameters and adapting to varying network environments.

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