Adaptive Bitrate (ABR) streaming allows a video stream to be made available at multiple quality levels, so viewers can select a resolution appropriate for their network connection and viewing device.
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In RePro, this functionality is provided by selecting Transcoder in the video settings in the Viewer. An incoming video stream can be transcoded into multiple resolutions:

Rather than every viewer receiving the same version of the stream, viewers can receive a resolution suited to their individual connection.

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Network conditions can vary significantly between viewers, particularly when people are watching from different locations or using mobile connections.

A viewer with a strong internet connection may be able to watch the 1080p stream, while another viewer on a slower or less stable connection can select a lower resolution to reduce the bandwidth required.

This can help maintain smooth playback when network conditions are limited, with the trade-off that lower resolutions provide reduced image quality.
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Although the underlying technology is Adaptive Bitrate streaming, ABR is labelled as Transcoder within the RePro interface.
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When Transcoder is enabled, RePro creates multiple resolutions from the incoming video stream.
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In the Web Viewer, the player can automatically select an appropriate resolution based on the viewer's network conditions.
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​On iOS and tvOS, automatic ABR selection is not currently available, but viewers can manually select their preferred resolution.
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This means different viewers can watch the same RePro Program at different resolutions without changing the original incoming stream.
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The Transcoder requires RePro to transcode the incoming video in order to create the additional resolutions.
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This is different from Passthrough, where RePro retains the original resolution and codec without applying an additional video transcode.
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The Transcoder can therefore be useful when accessibility across different network conditions is more important than maintaining the original encoded stream.
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For workflows where maintaining the original video characteristics is important, such as colour-critical review, Passthrough or SRT may be more appropriate.
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When using the Transcoder, RePro can apply a Global Watermark to the video.
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The Global Watermark is burned into the transcoded video and displays the same watermark image to all viewers watching the ABR stream.
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This is different from RePro's Individual Watermark and Forensic Watermark options, which provide different forms of viewer-specific watermarking.
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Project administrators can configure the Global Watermark used across the Project.