Currently there are more open issues with MPCVideoDec.ax that only that you mentioned. MPC developer has confirmed few issues (sorry, cannot remember currently what those were) and there weren't also any time schedule when those would be fixed on the filter side.Add MPCVideoDec.ax too, and it will be perfect (after TsReader.ax + MPCVideoDec.ax issue will be fixed)
1) TsReader needs to be fixed
2) MPCVideoDec.ax needs to be fixed
before we can add MPCVideoDec.ax to the MP distribution.