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lags with UHD 25p H264 movie on mavericks MBP retina

Hello, I have a strange behavior with a simple patch, 1 movie player set to performance on speed 1 and 1 projector. Even if it's written 220 cycles / FPS : 25, I have lags with freeze of image but not on sound. I tried on izz 2.5 and 2.2.2 with the same result.

The movie runs well on Quicktime X and if I export it on Apple ProRes codec I have no problem in isadora 2.5.
What is wired is that I worked a lot last spring with UHD H264 on the same computer and izz 2.2.2 and I never noticed this problem. After I built my project on the last iMac which is on tour now so I can't compare.
I read the "optimizing for speed support" where it's written H264 should not be your first choice! 
What is wired is that I worked a lot last spring with UHD H264 on the same computer and izz 2.2.2 and I never noticed this problem. After I built my project on the last iMac which is on tour now so I can't compare.
Any other feedbacks on this problem ? Thanks

15' i7 2,6 Ghz Macbook pro Retina Display 16 GB OSX 10.9.2 Latest Isadora version

Comments

  • 2 Comments sorted by Votes Date Added
  • So many variables in choosing the best codec. Drive speed, cpu usage, gpu etc..

    I can only guess that the balance between hardware strenght has changed, and you are noticing the effects.
    ProRes, will want a faster transfer speed, while H264 will consume for cpu (gpu maybe as well.. can't remember if AVfoundation has H264 optimized using the gpu)
    Personally, for my work I find Haps quality suitable, so I have standardized all my projects to use Hap.
    If I needed cleaner/truer images, I would move to ProRes. For long playback.. H264 or WMV (windows) are probably worth testing.
    Again.. these are my personal choices, and each project/system configuration changes the choices made.

    [Troikatronix Technical Support Staff] Bug Report/Feature Request FORM
    aka: Ryan Webber | http://www.dusxproductions.com | Win 8.1/10 64bit, i7-4810mq, 16gb, nVidia GTX 870m | located in Ontario Canada.

  • i had stutters until i went to hap codec for UHD, this was on osx too.

    http://www.fredrodrigues.net/ https://github.com/fred-dev Razor Blade 2016 W10 64, GTX 1060 16g ram rMBP Late 2013 OSX 10.10, GT750m 16g ram

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