Magewell ULTRA STREAM, User Manual, Page: 43 / 59

Sub Stream
Click Apply after configuration.
Audio
Click Apply after configuration.
Output: by default, it is 1280x720p30 at 1Mbps.
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Encoding profile: sub stream uses H.264 encoder. The profiles can be High
profile, Main profile and Baseline.
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Quantization range: options are Full range(0-255), Limited range(16-235)
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Keyframe interval: options are 1, 2, 5, 10, 30, 60sec. A less number will
result in a larger file size and less buffer time for seeing the first frame.
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Bit rate stats duration: adjust bit rate by image complexity to ensure the
stability of the code stream within the set period. The default value is
recommended. A smaller value means more information may need to be
discarded when the image data bursts.
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AAC: all audio streams will be affected by modifying the AAC bitrate. It
ranges from 16 to 256 Kbps, and the default value is 128 Kbps.
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