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Black horizontal line with DVD Source Videos (not aspect ratio bar becuase it is tiny and doesnt completely take up the horizontal axis)

Discussion in 'Convert DVD to another format' started by ckeech, Mar 3, 2012.

  1. ckeech

    ckeech Member

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    I have a black line up the top left of my videos when they have been ripped from DVDs. I have tried different DVDs and also different ways of ripping (Handbrake and MakeMKV).

    Does anyone know how to fix this? Or is it normal and do people just clip a few pixels from the top to fix it up.

    Thanks in advance.

    Exmaple Image: h_ttp://i42.tinypic.com/34h8775.png (remove the underscore, as a new user it won't let me put up an image, however it is pretty important in this question)
     
  2. attar

    attar Senior member

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  3. ckeech

    ckeech Member

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    Thanks for the reply. I have actually seen it in episodes of The Simpsons that I have ripped too. And for me, it is quite visible on my TV. I use XBMC running at 1920x1080.
     
    Last edited: Mar 3, 2012
  4. attar

    attar Senior member

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  5. ckeech

    ckeech Member

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    Thank you. I will leave this topic going for a while then if no luck, I'll try that forum.
     
  6. hello_hello

    hello_hello Member

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    I don't know exactly why they're there. I think it's something to do with the process of converting/scanning film to DVD, which is probably why DVDs containing animation don't have those half-black lines, but it's quite common.

    Normally when viewing video on a TV it overscans, which means around 5% of the picture (sides, top and bottom) ends up outside the screen area, so you don't see those half-black lines or any black bars down the sides. When you play video on a PC monitor though there's no overscanning, so you see everything. I'm pretty sure if you play the original DVDs on your PC those lines will still be there.

    There's no way to remove them when using MakeMKV. Normally when re-encoding you'd crop them so they're not encoded, although I've seen plenty of encodes where they haven't been cropped. If you're using "autocrop" when encoding, they probably won't be removed, so you need to manually adjust the cropping.

    Many new TVs allow you to disable overscanning, but often only for 1080p video or when connected to a PC.

    If you're viewing the video on a PC monitor (and using MakeMKV rather than re-encoding) the only option is to use a player which allows you to zoom in on the video a little, which basically produces the same result as overscanning on a TV. MPC-HC for example, easily lets you zoom in by tapping the "9" key on the numeric keypad (the "5" key resets it). One tap on the 9 key zooms in by 5% (I think) which means when you run the video full-screen on your PC monitor it should display the same as it would on most TVs (although some TVs probably overscan by more than 5%).
     
    Last edited: Mar 14, 2012
  7. ckeech

    ckeech Member

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    Thanks for the information. I will do some more testing. I will play the DVDs that I've noticed the lines on, on the computer to see if they exist there as well.
     
  8. hello_hello

    hello_hello Member

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    I'll be astounded if they don't.
    If you're encoding the video you generally only have to crop two pixels top and bottom to get rid of the half black lines. Judging from your picture, cropping about 4 to 6 pixels each side will remove the black lines from the sides if the conversion program's "autocrop" doesn't get them.
     

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