New Custom Quantization Matrices - EQM AVC Series. Last update: EQM AVC-HR 2005-08-01

Disabling deblocking is always a bad idea unless you're near saturation. However, custom matrices are part of high profile and it will be played back only if the SAP will support it.

Nice thing this matrix, exactly fit for my needs. One question though. I started encoding a movie (140 min movie) with 1800 kbps that I just finished encoding without a custom matrix. The 'problem' is, that the encode is 17 % faster now then before (it's only 30% completed now but the speed increase is obvious). I use the same settings as before so I could compare the results. This is something unexpected I would say. Is it normal or did my computer start taking drugs? Well, it just finished and it took 12 hours instead of 17.

x264 has different optimized routines for quantizing. if a cqm has low entries a slightly slower routine ist used to prevent overflow.

But only if the quantizer gets really low. And low entries means higher bitrates --> high quantizers at same bitrates, so in the overall it compensates one another ( well, almost at least )