I need to blur a moving object:
- The effect is only needed at some point of the video, it must appear, and then disappear, not being on screen the whole time.
- The object is moving, and changing shape, the blur must adapt to it.
- I've been trying to use the "Track Motion" option with Position & Rotation, then the "Analyze Forward" button, but the thing makes a mess all over, it's not following the object at all, then if You try to adjust it manually, it's only done in 1 frame, in the other frames the thing is off the object, then the "Tracking" stays on screen.
Thanks in advance.
Your question is entirely dependent on the material being used. Post a frame or two and you will receive some educated suggestions.
Are you saying that you have something in some video that you have shot that you want blurred out? If so, you could create an adjustment layer with a mask on it over the object you want to blur and then just animate the mask over time. Now, you could use motion tracking to help that mask follow the object, but it sounds like you are having trouble with getting it to work properly. Try the tips here for doing motion tracking correctly. Alternatively, you could follow the tips on rotoscoping to make the mask animation go more quickly. Also, if you have After Effects version 12 (also known as AE CC), you can use the new mask tracker feature.