Handbrake now comes with a turbo?

Discussion in 'Apple TV and Home Theater' started by Oneness, Jul 3, 2011.

  1. Oneness macrumors regular

    Feb 4, 2007
    I generally download the Handbrake nightly and use it for about a month before downloading a new version. So about a week ago I got a new nightly and wow is it faster. What happened?
    I have a late 2009 MBP 2.83 ghz and I encode both SD DVD and Blu-Ray's as an MKV with an RF of 20 and DTS Passthrough. Before this new nightly I would see the following:
    SD DVD - 24-26 FPS encode
    Blu-Ray - 6-8 FPS encode
    Now I am getting this:
    SD DVD - 115-120 PFS encode
    Blu-Ray - 22-25 PFS encode

    That is a heck of a difference. The Handbrake version I got is '4080 svn'.
    Was this just an optimization? Or a total rewrite (which I doubt). Whatever it was thank you Handbrake!!
  2. Lagmonster macrumors 6502

    Sep 22, 2007
    Do you know which day? Looking at the code changes and I cant seem to see what would have done that.
  3. HE15MAN macrumors 6502a


    Sep 3, 2009
    Florida's Treasure Coast
  4. AdrianK macrumors 68020

    Feb 19, 2011
    Handbrake is just a GUI frontend for encoders, so any improvement in performance would be due to changes in the encoders themselves rather than Handbrake.
  5. amarcus macrumors 6502

    Feb 26, 2008
    London, UK
    I guess I'd be more inclined to say "just an optimisation". Handbrake recently upgraded one of the libraries it uses (ffmpeg) to enable multi-threaded decoding therefore making better use of your additional cores.

  6. AdrianK macrumors 68020

    Feb 19, 2011
    So only the presets have changed...?
  7. tropic10 macrumors member

    Sep 8, 2008
    Amarcus mentioned the multi-threaded decoding but the preset change is probably the most likely cause for such a dramatic improvement with encoding speed.
  8. BlackMangoTree macrumors 6502a

    Sep 30, 2010
    I am seeing zero speed improvements in the latest nightly build.
  9. Oneness thread starter macrumors regular

    Feb 4, 2007
    I guess because they do make changes - and usually they are for the better.

    I don't use any of the pre-sets in Handbrake so I am assuming that when I open Handbrake it just defaults to the 'Normal pre-set' and that is where I am seeing the increase in speed.
    Maybe those who use the Apple pre-sets are not seeing the same increase.

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