search for: pretokens

...of it. If the frame header will be built depending on the frame data - then the only way how to build it (without increasing latency and required memory size - it is difficult too) is to build the header in FPGA - During first pass (1 frame time) when data is processed in macroblock-scan order and pretokens are saved to the sdram all the data for the header will be ready. And then the headers could be built just before the stage 2 (starting from "pretokens" in coded order) send the data out. It is possible - but it is much easier to build headers in software in parallel with the fpga proces...