Macbook Air 11in Ultimate lags on 1080p HD movies

Discussion in 'MacBook Air' started by ZenoVT, Jan 15, 2011.

  1. macrumors regular

    Apr 16, 2009
    Just recently bought my macbook air 11in Ultimate. I tried to watch a 1080p HD movie recently and it lags every once in awhile, especially at certain action scenes and water scenes.

    The file is an mkv file that is @ about 11gb, and I am using VLC as my player.

    Do you guys have any recommendations as what I should be using to watch the HD movies?

    Playing using QuickTime lags even more than VLC. I thought the Geforce 320M should be sufficient enough to decode HD films.

    I have yet to try a 720p film yet.
  2. simsaladimbamba

    Nov 28, 2010
    Try Movist.

    You can also analyse the movie via VideoSpec and see what it says under Additional Parameters >>> Reference Frames.
    If it is bigger than "8", then that might be the cause of the problem.

  3. macrumors 68020


    Mar 17, 2009
    Is that something that's changeable (reference frames)?
  4. thread starter macrumors regular

    Apr 16, 2009
    *** Video Track Parameters ***
    - Format: H.264/MPEG-4 AVC
    - Size: 9.14 GiB (84%)
    - FourCC: avc1
    - Track number(s): 0
    - Bitrate: Max.: Undefined
    Average: 8 839 Kbps
    Min.: Undefined
    - Frame rate (fps): Max.: Undefined
    Average: 23.976
    Min.: Undefined
    - Bitrate mode: Undefined
    - Encoding profile: High@L4.1
    - Resolution: 24 bits
    - Width (Pixel number): 1920
    - Height (Pixel number): 800
    - Pixel Aspect Ratio: 1:1
    - Display aspect ratio: 12:5
    - Chroma subsampling format: YUV420p
    - TV standard: Undefined
    - Interlacing: Progressive
    - Encoding library: x264 core 107 r1766 f9f0035
    - Additional Parameters: CABAC: Yes
    Reference Frames: 5
    Bits/(Pixel*Frame) ratio: 0.240
    Muxing mode: Unknown@4.1

    *** Audio Track(s) Parameters ***
    - Format: DTS Coherent Acoustics
    - Size: 1.56 GiB (14%)
    - FourCC: 0x2001
    - Number(s) and language(s): 2: Undefined
    - Details: -
    - Profile: Undefined
    - Bitrate: 1 510 Kbps
    - Bitrate mode: Constant
    - Resolution: 24 bits
    - Rate: 48.0 KHz
    - Channel(s): 5:1 - 6 channels
    - Position: Front: L C R, Surround: L R, LFE
    - Encoding Library: Undefined
  5. macrumors member

    Nov 2, 2008
    Båstad, Sweden
    why even bother with 1080p on a small with a screen that has a much lower resolution than 1080p? 720p is better on the 11" and also less work for the cpu/gpu.. and smaller files for the ssd..

    Btw, try plex for HD instead, works better than VLC because VLC doesnt have hardware acceleration yet.
  6. macrumors regular

    Dec 7, 2010
    i have the dark knight as a 15GB mkv on my 13" 4GB. It runs fine although you can tell it's working its butt off!
  7. macrumors regular

    Dec 30, 2009
    Toronto, Canada
  8. thread starter macrumors regular

    Apr 16, 2009
    I have my Air connected to an external monitor :D
  9. macrumors member

    Nov 2, 2008
    Båstad, Sweden
    Ok =) then it makes some sense I guess =) but you do realize that the macbook air is made for lightweight computing, not heavyweight hd-processing? =)
  10. thread starter macrumors regular

    Apr 16, 2009
    I really like how MPlayer let's me watch in HD on my external while still use my laptops screen to surf the net and chat at the same time, but still lags like crazy.
  11. thread starter macrumors regular

    Apr 16, 2009
    Update: Plex seems to work, but their interface is hardly easy to use just to casually watch movies

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