Because each bit stream may have been generated as part of its own statistical-multiplexing process, its individual bandwidth allocation is no longer relevant to the new multiplex. The key challenge for operators who want to manipulate an MPEG-2 stream to create a custom lineup is combining the various VBR sources to construct a new multiplex, without exceeding the fixed bandwidth of the output channel. Service providers must also combine MPEG-2 digital and analog sources to efficiently maximize the available output bandwidth. RateMUX allows cable operators and digital video service providers to accomplish this. Using a proprietary statistical model, the processed streams are recombined into a highly efficient, multiplexed program transport stream, while maintaining video quality.
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This maximizes capital equipment investment and ensures service providers are given the latest technology. Operators can leverage a single platform to efficiently scale services to meet emerging video standards and services. RateMUX accepts up to 15 discrete MPEG2 transport streams over GI DHEI or DVB-ASI compliant interfaces. RateMUX DSP cards contain the powerful video processing capability of the rate multiplexer. This gives operators the ability to set the relative picture quality among all channels and the output rate of the multiplexer.