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Message: <blockquote data-quote="Inker" data-source="post: 324294" data-attributes="member: 10541">Hmm, ffdshow does not use your videocard to decode h264.CoreAVC is, just like ffdshow, a software based decoder, which means you're cpu does all the work. CoreAVC is, however, much more efficient than ffdshow, so it doesn't stutter on high bitrates quite as easily, this all depends on youre hardware though. If ffdshow runs fine then the only thing you will gain by using coreavc is lower cpu usage, which could mean lower heat/lower noise. But this is heavily dependend on your system.The H264 standard dictates the exact decoding result, so both should output the exact (bitwise exact) same output, so there is zero quality difference. If there is, it is a bug. ffdshow of course offers some post-processing that coreavc does not, but you can still chain ffdshow as a raw decoder after coreavc and get the best of both worlds.</blockquote>