Andrew Kramer Set Extension problem

[Sam Rose]

Ok
Here it is
https://www.vidiLife.com/video_play_1068946_Need_Help_with_this_effect.htm?tc=1057549

[Mike Clasby]

Pick better points to track. Sounds weird but probably the best solution,

Aharon shows how to manually adjust a track point frame by frame when they get wonky, in part three (5 minutes in), of this three part tutorial. It’s a one point track, but the principal is the same:

https://library.creativecow.net/articles/rabinowitz_aharon/cartoon_look.php

Aharon also has a tut on high end tracker, here:

https://library.creativecow.net/articles/rabinowitz_aharon/Mocha_Tut_1.php

Many folks like SynthEyes, its really designed for Matchmaking, (3D tracking), it relatively inexpensive ($400 range I think) ad uses a gazillion track points, everything look almost automatic, lots of tuts.

https://www.ssontech.com/

[Sam Rose]

Hi
Have you seen this video I posted. Where do you think I should put the track point and the Rotation point?

I am only 16 and I can’t afford that SynthEyes thing.

Thanks for the reply

[Andrew Kramer]

Reshoot and turn your shutter up. You can also try making a larger track area… but it gets pretty blurred over similar looking ground.

[Mike Clasby]

OK, I just saw your clip.

Widen those tracking point boxes out, The Feature and the Search Regions, it takes longer but they have more to reference that way. If a point jumps outside them you’re a goner.

When your track Points move off screen (just before they do) hold down ALT and move the track Point to a new feature, this keeps the attach point in the same place, essentially extending the same track. Alternatively Andrew uses two tracks on Nulls for when track points move off the page, one track is the extension of the other, here:

https://library.creativecow.net/articles/kramer_andrew/Set_Extensions.php

See AE help, lots of stuff there under Tracking, but it really is an art as much as a science.

Here is a tut on the Alt moving thing for track points that leave the screen:

Tracking obscured objects in video

https://studio.adobe.com/us/tips/tip.jsp?p=1&id=399&xml=aft6tracking

Although Aharons method looks good..

[Sam Rose]

Hi
I have a Sony TRV240E, can I turn the shutter up on that?

[Sam Rose]

Hi
I just cut out the bit where it pans into it. Now the tracking is perfect. Would a better camera of worked?

[Kevin Camp]

possibly…

lens quality and resolution of the ccd will can effect sharpness, but your camera may work just fine if you can set things up right… motion tracking will work best in sharp contrasting areas of the footage. so tightening shutter angle or increasing the shutter speed will help reduce the motion blur that occurs as you pan/tilt the camera. also, making sure you have enough light to have a good depth of field will help keep more details in focus, and thus sharper details to track.

[Sam Rose]

Hi
How do I turn up the shutter speed on this camera?

[Kevin Camp]

i’m not familiar with you camera, but if you have the manual, or download it from the manufacturer, you’ll want to look up adjusting either shutter speed or shutter angle.

shutter speed is somewhat dependent on framerate, in that if you shoot 60i, the minimum shttuer speed is 1/60 of a second.. a more ‘normal’ speed would be 1/120 of a second, but many cameras will adjust the shutter speed based on the amount of light available, unless set otherwise. so if you can override the shutter speed a setting around 1/250 or maybe 1/500 would greatly reduce any motion blur.

shutter angle is a bit obtuse is video, but many video cameras have this adjustment. a setting of 180 is considered ‘normal.’ that 180 is essentially half the frame rate, so in the example above it would equate to a 1/120 shutter speed. so a shutter angle of 90-45 would give you an effective shutter speed of 1/250 to 1/500.

Kevin Camp
Designer – KCPQ, KMYQ & KRCW