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  1. https://www.youtube.com/watch?v=UiezugBMHiU#t=31

    All I'm after is the ability to track motion with a line.

    Thanks.
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    Originally Posted by Mordecai0 View Post
    https://www.youtube.com/watch?v=UiezugBMHiU#t=31

    All I'm after is the ability to track motion with a line.

    Thanks.
    All you're going to need is some fairly sophisticated software like After Effects. Maybe Blender can do it. It looks easy, but you have to not only track the motion, but also paint, build and retain the line.
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  3. Member racer-x's Avatar
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    Originally Posted by smrpix View Post
    Originally Posted by Mordecai0 View Post
    https://www.youtube.com/watch?v=UiezugBMHiU#t=31

    All I'm after is the ability to track motion with a line.

    Thanks.
    All you're going to need is some fairly sophisticated software like After Effects. Maybe Blender can do it. It looks easy, but you have to not only track the motion, but also paint, build and retain the line.
    Yes, sophisticated software like Aviutl can do it.................
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    The memories of a man in his old age, are the deeds of the man in his prime.......
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    Actually, I'd say each is faked in a different way.
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  5. Member racer-x's Avatar
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    What do you mean by "faked"? I manually motion tracked my example. Aviutl has an automated tracking filter, but I have yet to figure it out, so I did it manualy.

    Here is the project file if anyone is interested. You can make the line any size and color:
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    The memories of a man in his old age, are the deeds of the man in his prime.......
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    Originally Posted by racer-x View Post
    What do you mean by "faked"? I manually motion tracked my example.
    That's exactly what I meant. It looks manual and does not follow the actual contours of the motion. The "original" version shows a ghostly predictive line before the motion ever gets there but, to me, the motion path and acceleration are more convincing.

    BTW, although free, I agree Aviutl is very capable -- you know that better than anyone!
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    It's because the original YT's "slow mo" version is done with duplicates, not real unique frames. I think in aviutl, instead of setting it to "tweening" (it creates "inbetween" motion) you can select one of the other interpolation options so it moves stepwise like that original version if you wanted to . (Or do the same thing with the normal speed, non duplicate version, then duplicate the frames)

    The motion blur on this clip on some of the frames (even though some of is probably from YT compression) would make it difficult to automatically track . You'd probably have to correct some points or manual assist

    For sports analysis scenarios, you always want to shoot with fast shutter speeds to reduce the motion blur
    Last edited by poisondeathray; 30th Aug 2014 at 22:36.
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  8. Originally Posted by racer-x View Post
    What do you mean by "faked"? I manually motion tracked my example. Aviutl has an automated tracking filter, but I have yet to figure it out, so I did it manualy.

    Here is the project file if anyone is interested. You can make the line any size and color:
    Thanks for your help. Your videos look exactly like what I want. I downloaded your project and the program to have a look. I've inserted the line (motion track)(custom object) event on my timeline - how exactly do I get it to follow what I want it to follow? Ticking the Motion Tracking MK-1 box shows me some pixels I can follow but I'm struggling to recreate what you've done. A step by step would be nice.

    Edit: So you've split the object and just replaced it. For the video I'm trying to track motion this will be a very difficult and long process. Can I track the pixels instead? Also the object is tracking the hands manually but how do i get the line as with your video?
    Last edited by Mordecai0; 31st Aug 2014 at 01:10.
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  9. Member racer-x's Avatar
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    This one was done on the normal speed section, it's a lot smoother / better I think.
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    The memories of a man in his old age, are the deeds of the man in his prime.......
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  10. Member racer-x's Avatar
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    @ Mordecai0, I'm not in the mood to make another tutorial. I did cover "mid-points" (aka key-frames) in my advanced editing tutorial. You should check it out. Basically you add new custom object, place it where you want. Right-click to add "Mid-Points" to animate.

    Maybe if I have some free time, I'll make a tut and put it in the other thread for Aviutl tips, tricks and support.
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    The memories of a man in his old age, are the deeds of the man in his prime.......
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  11. A very simple automated tracking example with AviUtl (see attached video demo)

    Major steps:
    1. select the video segment where the feature/object appear inside the video (exclude those get outside the screen)
    2. Check "English EXO"
    3. Select feature points
    4. Deactivate plugin
    5. Click ANALYZE
    6. Close file
    7. Load video into Adv.Editing
    8. Load tracking#.exo
    9. Goto scene, enable alpha channel
    10. switch object type, tune parameters
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    AviUtl i18n, plugin developer.
    Member of ふえるわかめ
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  12. Member racer-x's Avatar
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    Thanks MaverickTse for the detailed tut. Yes the Automated Motion Tracking works pretty good.........
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    The memories of a man in his old age, are the deeds of the man in his prime.......
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