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  1. I created a test video file. When I play this same video file using windows media player and VLC, and I set both of them not to scale the video, I expect the size of the video displayed on screen to be exactly same. But I find the size is different. I used a screen ruler to measure the size and here is what I find :
    • Windows media player : 641 x 369 for aspect ratio of 1.73
    • VLC : 721 x 416 for aspect ratio of 1.73

    Well, at least the aspect ratio is same. But why is the display size different between the 2 players?
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    The test video file has these properties 720x480 (and I am not expecting the display size to match 720x480). Video was created from Vegas. File extension is .avi.

    KoolK
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  2. aBigMeanie aedipuss's Avatar
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    use mediainfo on the file. put it in text mode and paste the results here.
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  3. Banned
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    Windows Media Player is a piece of absolute garbage. I am not kidding when I say that I really wonder if it would even be possible to make it suck more than it does right now. Often it refuses to play files that it should have no problems with so I guess to a certain extent you're lucky that it played your file at all, even if at the wrong resolution.
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  4. As suggested by 'aedipuss', copying the output of mediainfo on the test video file below.

    General
    Complete name : <cut>.avi
    Format : AVI
    Format/Info : Audio Video Interleave
    Format_Commercial_IfAny : DV
    File size : 30.5 MiB
    Duration : 8s 375ms
    Overall bit rate : 30.5 Mbps
    Recorded date : 2011-08-06 08:57:19.000
    TCOD : 0
    TCDO : 83750333

    Video
    ID : 0
    Format : DV
    Codec ID : dvsd
    Codec ID/Hint : Sony
    Duration : 8s 375ms
    Bit rate mode : Constant
    Bit rate : 24.4 Mbps
    Width : 720 pixels
    Height : 480 pixels
    Display aspect ratio : 4:3
    Frame rate mode : Constant
    Frame rate : 29.970 fps
    Standard : NTSC
    Color space : YUV
    Chroma subsampling : 4:1:1
    Bit depth : 8 bits
    Scan type : Interlaced
    Compression mode : Lossy
    Bits/(Pixel*Frame) : 2.357
    Stream size : 28.7 MiB (94%)

    Audio
    ID : 1
    Format : PCM
    Format settings, Endianness : Little
    Format settings, Sign : Signed
    Codec ID : 1
    Codec ID/Hint : Microsoft
    Duration : 8s 375ms
    Bit rate mode : Constant
    Bit rate : 1 536 Kbps
    Channel(s) : 2 channels
    Sampling rate : 48.0 KHz
    Bit depth : 16 bits
    Stream size : 1.53 MiB (5%)
    Interleave, duration : 262 ms (7.84 video frames)
    Interleave, preload duration : 266 ms
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  5. aBigMeanie aedipuss's Avatar
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    DVavi isn't a square pixel format. it's either under 1 for 4:3 or over 1 for 16/9. for display purposes it should be 640x480 for 4:3 or 854x480 for 16/9 if you are working with ntsc.

    in vlc play the video and go to tools/video info to see what it thinks it's playing. you can alway take a snapshot with vlc while it's playing in png format and that will give you the exact size of the video on the screen.
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