Cop3 VBR
Cop3 VBR Activity Sub-group: The Pro-MPEG work, defined as CoP3 for CBR MPEG2 transport streams over IP networks with FEC, was completed by the VSF and submitted to SMPTE and approved as SMPTE 2022-1 & 2022-2. The CoP3 VBR Activity Sub-group continues that work for VBR MPEG2 transport streams. This work was divided into two application focused activities. One work defines an interoperable standard for Piecewise Constant MPEG2 transport streams as defined in the ISO-13818 MPEG document. The other work defines an interoperable standard for Non-Piecewise Constant MPEG2 transport streams as often found in large scale distribution networks.
Both works have been completed and submitted to the SMPTE 32NF Technical Committee. The Piecewise Constant work has completed the SMPTE standards process and is in the publication phase as SMPTE 2022-3/2010. The Non-Piecewise Constant work is currently in the ballot process within the 32NF Technical Committee.
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