Handbrake now comes with a turbo?

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

  1. Oneness macrumors regular

    Joined:
    Feb 4, 2007
    Location:
    Cowtown
    #1
    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

    Joined:
    Sep 22, 2007
    #2
    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

    HE15MAN

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

    Joined:
    Feb 19, 2011
    #4
    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

    Joined:
    Feb 26, 2008
    Location:
    London, UK
    #5
    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.

    Adam
     
  6. AdrianK macrumors 68020

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

    Joined:
    Sep 8, 2008
    #8
    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

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

    Joined:
    Feb 4, 2007
    Location:
    Cowtown
    #10
    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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