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| peter_g |
| Posted: Apr 10 2003, 12:48 PM |
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Unregistered
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I need a filter that masks out or blures an object, e.g. a car's licence plate, which moves on the the screen.
Inverse mode (masking out the background and leaving the object) should also be possible.
Does anyone know of such a filter?
Thank you in advance |
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| endorphin |
| Posted: Apr 10 2003, 04:59 PM |
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Advanced Member
Group: Members
Posts: 112
Member No.: 3488
Joined: 4-April 03
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This requires motion tracking, pretty complex stuff. It would be nice to see in a free filter for VDub, but that's a lot of programming for free!
For comparison, Adobe After Effects standard version is about $500 and the Production Bundle version in which one of the major differences is that it has a motion tracker included, is twice the price. You can do what you want to do (mask a moving object) in Adobe AE then, or probably also with Discreet Combustion. Both are expensive.
There's already a motion-stabilizing filter for VirtualDub, and a motion stabilizer already does most of the hard work of extracting motion-tracking data, but it would have to be modified to export position/motion data in order to apply the mask in the right place. By the time that much work is done, it would be almost a full-featured Non-Linear video editing program with effects-keyframe support and all the rest. And no longer free. |
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| peter_g |
| Posted: Apr 14 2003, 05:32 AM |
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Unregistered
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Thank you very much for you reply.
I was aware that the problem is complex and did not count on the filter to be free.
I hesitate to switch to another program, because virtualdub is very handy.
I hoped that maybe something is available between the full motion tracking functionality and the current status where you have to key in the parameters for every frame.
regards
Peter |
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