iOS H.264 硬件解碼和編碼

IOS H.264硬件解碼和編碼的介紹：Video Toolbox introduced in WWDC '14 session 513. ios Concepts:概念 NALUs: NALUs are simply a chunk of data of varying length that has a NALU start code header 0x00 00 00 01 YY where

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