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  1. #1
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    Jun 2005
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    Cape Town South Africa
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    Vision Mixing info

    Hi everyone, newly registered, I have a question regarding vision mixing, and related training. I have been asked by my company to give a short workshop on the above and cannot seem to find related info on the net for use by those that are in the workshop, any suggestions welcome.

  2. #2
    Administrator Dave's Avatar
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    Sep 2004
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    Te Awamutu, New Zealand
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    Hi Vaughan,

    I'm afraid we don't have any information specific to vision mixing and I don't know of any other website which does either. That's not really what you wanted to hear, is it?

    Like many things, it's on our to-do list. Unfortunately it's quite a specialist topic and we're still concentrating on tutorials which have a wider appeal.

    Are there any things in particular you want to know about vision mixing, or are you just looking for general information about what it means?
    Dave Owen
    MediaCollege.com

  3. #3
    Member
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    Jun 2005
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    Cape Town South Africa
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    Vision Mixing saga

    Hi Dave

    Nice to 'hear' from you, I was looking for any info on vision mixing in general, as I am presenting a workshop for my company and one of the subjects is vision mixing, so a general overview was what I was interested in, although indepth is also good.

    Regards

    Vaughan

  4. #4
    Administrator Dave's Avatar
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    I've put together a very basic introductory page. It's not much at the moment and it probably won't help you, but it's a start and I will try to add to it as I get time:

    http://www.mediacollege.com/video/pr.../vision-mixer/
    Dave Owen
    MediaCollege.com

  5. #5
    Member
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    Cape Town South Africa
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    Vision Mixing cont'd

    Hi Dave

    Thanks for the input, good basic info there, and I appreciate your efforts in putting it together, will become very useful for me when introducing the subject to new people in future.

    Regards

    Vaughan

  6. #6
    Member
    Join Date
    Feb 2006
    Location
    Sandusky, Ohio
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    Re: Vision Mixing info

    ok - I can't help much with the logistics of video mixing. However, there is one very important thing to remember about video mixing. This is SYNC! If you get a av switchbox like from radio shack and attempt to switch between two video inputs - you will notice a very defined jitter in the video. This is due to the fact that the tv is locking into a different sync pulse. These are the ( in layman's terms ) the black bars at the top and side of the picture if your tv gets out of "whack". So, in order to mix or switch video and keep it "clean", you need the same synchronizing pulse to all video sources you are switching. In the broadcasting field, there is a sync generator that is locked to all cameras and video switchers in the station. In some video processors, it is called "genlock". This ensures that all video signals are on the exact same timing and all locked together. There is no way to creat a split screen or overlay without this signal to lock all the video sources.

    I hope this didn't get too technical for you or anyone else.

    Steve

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