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Latency Control Modes

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Introduced in nanoStream H5Live Player Version 4.14.x, two new latency control modes have been added, targeting especially lowest latency use cases like live auctioning. The latency control mode can be selected via the added playback.latencyControlMode configuration parameter. The established latency control mode is available as the classic option which remains to be the default mode. In addition the new latency control modes balancedadaptive and fastadaptive have been added. According to the current stream and network conditions they can adjust the latency adaptively. This allows to achieve a lower latency while keeping the playback experience smooth.

Supported platforms and browsers

This feature is particularly helpful in i.e. live auctioning, where even lower latency is crucial. The usage depends on the needs, however, in most cases the "classic" mode is enough to achieve a satisfying viewing experience.

v.4.14.1

Version 4.14.x added support for all major desktop and Android browsers.

• Desktop Windows/Mac/Linux: Chrome, Edge Chromium (80+), Firefox, Safari, Chromium-based browsers
• Android: Chrome, Firefox, Chromium-based browsers
• iOS is planned to follow soon

For unsupported platforms/browsers the player is doing automatic fallback to "classic" mode.

Configuration

Accessing latency control modes is possible via playback.latencyControlMode in the player configuration.

Parameter name: config.playback.latencyControlMode
Values: "classic", "balancedadaptive", "fastadaptive"

Examples:

var config = {
        "playback": {
            ...
            "latencyControlMode" : "classic",
            ...
        }
}

var config = {
        "playback": {
            ...
            "latencyControlMode" : "balancedadaptive",
            ...
        }
}

var config = {
        "playback": {
            ...
            "latencyControlMode" : "fastadaptive",
            ...
        }
}

Latency control modes

"classic" mode

• default mode
• well-established and reliable option for a variety of use cases

• based on threshold values that can be customized via tweaks.buffer setting

"balancedadaptive" mode

• added in version 4.14.x

• latency control adapting to current stream and network conditions
• capable of achieving and maintaining lower playback latency
• lower operating points compared to classic mode
• recommended to be used without custom tweaks.buffer settings

"fastadaptive" mode

• added in version 4.14.x

• latency control adapting to current stream and network conditions
• capable of achieving and maintaining lower playback latency
• lower operating points compared to balancedadaptive mode
• recommended to be used without custom tweaks.buffer settings