No Hardware H264 Decoding with Firefox

Discussion in 'OS X El Capitan (10.11)' started by 1024724, Aug 4, 2016.

  1. 1024724 macrumors member


    Apr 4, 2016
    Mac Pro on 10.11.6 with NVIDIA TITAN X and Firefox 48 shows Hardware H264 Decoding-NO. MacBook Pro and Mac mini both have same OS and same Firefox and show Hardware H264 Decoding-YES.

    I feel pretty sure this is Mozilla's doing with their blocklists (including frickin' hardware) they see fit to blindly dictate. Does anyone know how to get around it? I have set all the config options I know of and even removed all Darwin + 0x10de Vendor ID entries in the Application.ini file. Still, nothing.
  2. Ritsuka macrumors 6502a

    Sep 3, 2006
    Does hardware decoding work in QuickTime or Safari?
  3. mossy, Aug 9, 2016
    Last edited: Aug 9, 2016

    mossy macrumors regular


    Sep 11, 2013
    Seems like a bug. Lots of talk over at

    Maybe under about:config (type it into the url bar) and search for 'decoding' or 'H264' and change some of those options might get it to work for you.

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