Viewing interlaced video on iMac screen

Discussion in 'iMac' started by RobMoss, Jan 11, 2011.

  1. RobMoss macrumors regular

    Joined:
    Jul 23, 2009
    #1
    Hi there,

    I'd like to watch some of my TV DVDs on my iMac, but when I do, it deinterlaces. What I'd like to see is 50 field per second smooth motion, not rubbishy 25 fps "filmised" motion with combing artefacts. Is this possible, and if so, how do you do it?

    Thanks in advance!
     
  2. TMRaven macrumors 68020

    TMRaven

    Joined:
    Nov 5, 2009
    #2
    tempgaussmc is a very high quality, motion compensated bobber deinterlacer that has the ability to use eedi3 interpolater to help smooth out edges for further quality and uses temporal gaussian blurring to help smooth out artifacts. Being a bobber deinterlacer, it will use each interlaced field and create a full frame out of it, so it will not only deinterlace with high quality, but double your framerate of the video. It's only available through avisynth on windows though (or avidemux using avisynth proxy, either way you have to create a small script for using it) Tempaussmc also is extremely, extremely cpu taxing, so it takes a while, and can even take days to finish on even high end nehalem quad cores when applied on 1080i content.

    There are other deinterlacers available for simple transcoding programs (such as yadif for avidemux or yadif with a combing filter and lowpass filter for handbrake, but they won't give you double framerate.) All the rest of the bobbers besides tempgaussmc and mcbob are rather poor as well, however if you want to try some simple bobbers out, avidemux gives access to a couple of them.
     
  3. RobMoss thread starter macrumors regular

    Joined:
    Jul 23, 2009
    #3
    Hi there,

    Thanks for this. However, it doesn't sound like I could watch DVDs through it - is it more for processing video files to watch later..?

    R.
     
  4. TMRaven macrumors 68020

    TMRaven

    Joined:
    Nov 5, 2009
    #4
    Yes, it's for re-encoding the videos. Some video players like VLC implement their own live-deinterlacing filters, but they're no where near as good as some of the higher quality post-processing deinterlacing filters. Do note that VLC does have its own live-deinterlacint yadif, though-- but it will not double your framerate.
     
  5. spacepower7 macrumors 68000

    Joined:
    May 6, 2004
    #5
    Actually, you are watching the video interlaced on a progressive scan monitor.

    It is impossible to watch interlaced video natively on a LCD, that is why you are seeing the combing effects.

    You need to turn on deinterlace in your playback software.

    Apple DVD Player: View>Deinterlace> then try the different settings.

    VLC has many options too

    Hope this helps
     

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