You are missing the per-CPU parallelization via vectorization that lies at the core of every modern video decoding library. The conundrum with C is that it is o

You are missing the per-CPU parallelization via vectorization that lies at the core of every modern video decoding library. The conundrum with C is that it is one of the very few languages that allow (via assembler callouts) to directly use CPU vecorization instructions, but at the same time does so in a manner that absolutely prevents automatic optimizations (i.e. by observing data dependencies).