1080p Issues with MBA 13?

Discussion in 'MacBook Air' started by Mike84, Mar 16, 2011.

  1. macrumors 6502a

    Joined:
    Jun 23, 2010
    #1
    I have seen on this forum a few people mention that they have watched 1080p videos on youtube, so I decided to try it.

    I tried to watch this one:

    http://www.youtube.com/watch?v=uA378g_gD1I

    On both chrome and safari(with the most up to date flash) and it lags. Does anyone know why this is happening? Does it happen to you? I have hardware acceleration on, but it is not smooth at all and it lags.
     
  2. macrumors member

    Nachos

    Joined:
    Dec 1, 2010
    Location:
    Lynge, Denmark
    #2
    I have and MBA 13" and no acceleration on. It doesn't lag at all on mine, its perfectly smooth. Could be your internet maybe?
     
  3. thread starter macrumors 6502a

    Joined:
    Jun 23, 2010
    #3
    I have pretty fast internet here at school, which is where I am testing it.

    Regardless, the video is fully downloaded so the internet doesn't really matter, which is why I am wondering if I should change something? I have the 4gb one and I am using chrome. tried it on safari as well and it also chopped up. Also tried it with hardware acceleration off.
     
  4. macrumors member

    Nachos

    Joined:
    Dec 1, 2010
    Location:
    Lynge, Denmark
    #4
    okay, are you running anything in the background? i have MBA Ultimate and haven't changed a thing on it performance wise. works in both safari and chrome for me. :/
     
  5. macrumors member

    Nachos

    Joined:
    Dec 1, 2010
    Location:
    Lynge, Denmark
  6. macrumors regular

    Joined:
    Apr 21, 2010
    #6
    i was watching youtube last night and after about 10 minutes my fans started kicking in really loud.
    is this usual or is somethhing wrong??
     
  7. macrumors member

    Nachos

    Joined:
    Dec 1, 2010
    Location:
    Lynge, Denmark
    #7
    I think its pretty normal, especially if you were watching HD movie clip. Mine does it too.
     
  8. macrumors 6502

    Joined:
    Jun 24, 2010
    #8
    any try a 1080P mkv file to see if it is viewable in VLC.
     
  9. macrumors newbie

    Joined:
    Mar 1, 2011
    #9
    I just tried this video out on my 13" 4GB Air and it plays fine with no lag or stuttering in Chrome. CPU shows around 20-30% utilization.
     
  10. WiseDuck, Mar 16, 2011
    Last edited by a moderator: Mar 16, 2011

    macrumors member

    WiseDuck

    Joined:
    Feb 23, 2009
    #10
    Base 11" model here. No dropped frames, no lag. 30% cpu usage!

    I tried a 9gb 1080p Blu-ray rip of Sherlock Holmes earlier today. Viewed it on an external display too, extended desktop.

    No lag whatsoever, about 50-60% CPU usage with VLC player. (Actually, it said 100-120%, but in OSX the percentage goes all the way up to 200% for some reason. So it only used a bit over half of the CPU.)
     
  11. Moderator emeritus

    Hellhammer

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #11
    Just tried that on my 1.86GHz 13". Plays without any issues. OP, is your Flash Player up-to-date? Try installing the latest version and then reboot and give it another try. Also, make sure your Safari is up-to-date.

    That is pretty normal. Happens to me too.

    That is because your CPU has two cores. In Activity Monitor, it reports the processes per CPU core so 100% usage means one core is maxed out. With e.g. 12-core Mac Pro, the maximum CPU usage is 2400% (Hyper-Threading; each core supports two threads).
     
  12. thread starter macrumors 6502a

    Joined:
    Jun 23, 2010
    #12
  13. macrumors member

    Nachos

    Joined:
    Dec 1, 2010
    Location:
    Lynge, Denmark
    #13
    then i might just be the video that's a little ****ed up ;)
     
  14. Consultant, Mar 16, 2011
    Last edited: Mar 16, 2011

    macrumors G5

    Consultant

    Joined:
    Jun 27, 2007
    #14
    Uninstall your Flash, and install latest "stable" version (10.2.152.33 as of now), which has GPU acceleration.
     
  15. macrumors 6502

    Joined:
    Mar 15, 2011
    #15
    I have the 11 inch with 2gb ram and played it perfectly fine without any stutter what so ever. I just go this and didn't try out 1080p vids from youtube till now.
     
  16. macrumors regular

    Joined:
    Jun 15, 2009
    Location:
    CT
    #16
    why bother watching something in 1080p on a screen that doesn't even support that resolution?
     
  17. macrumors 6502

    Joined:
    Oct 28, 2010
    #17
    guys im watching it now on my 11.6

    1080p no lag for both latest flash, safari
     
  18. Moderator emeritus

    Hellhammer

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #18
    Because 720p is less than the native resolution of 13" MBA.
     
  19. macrumors 65816

    striker33

    Joined:
    Aug 6, 2010
    #19
    I found that with my 13" MBP from last year that any for of HD flash video caused slowdown so that it was unwatchable.

    A quick download of AdBlocker Plus fixes everything, as it blocks the flash ads on the website, freeing up resources.
     

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