You can easily spot those that jump around or do weird things Then manually add a bunch of trackers that span as much frames as possible, just add them where the solve is bad or where there are to little. Best spotted if you turn off the footage and enable tracker trails. Then I’ll delete the shaky ones, and those that are obviously wrong. I, it will have found a few good trackers by it self. Usually I start in the ‘feature panel’ by letting it find a bunch tracking points by it self, and ‘peel all’ them. Once comped you can distorted it together as you wish.Īnyways, tracking imperfect shots requires a lot of voodoo to make it right!ĭo you always start with autotracking or you place your trackers manually? And when you have trackers on different levels (say, different floors of a building without walls) do you HAVE to select them and constrain them to a plane? lens distorion -> you’ll either match to footage to the 3d, or the 3d to the footage. If you render the 3d though the shaky cam it is easier to match the native motion blur. If you stabilize before adding 3d the footage will still have some motion blur in it from original movement, the 3d will have not. AEF’s warp stabilizer does not do this! Or you can stabilized once the 3D is comped on… motion blur is something to watch out for. stabilization -> use a stabilizer that produces trackable footage. shutter lag -> always fix before you do anything The advantage of the straightened footage is the the 3d will match in your viewport perfectly (viewport cam is a perfect lens with no distortion) Or you can distort the 3d after rendering to match the original footage which will keep things more crisp. Then give the final comp some distortion back again to make it look more authentic. The 3d which will always be rendered with a ‘perfect’ lens. Then use this straightened footage to comp the 3d on. Lens distortion doesn’t influence the solver much, I find it best to track the footage, export the undistorted footage using the found lens distortion parameters. A warp stabilizer just warp the image as if on a rubber sheet, the tracker will go insane on that! You can stabilize the footage but you’ll have to use syntheyes’ stabilizer, that will produce footage that is still mathematically solvable. After getting the raw footage, and removing the shutter lag, it tracked fine and almost instantly. Recently I had some octocopter footage that came heavily stabilized and the tracker had a really hard time. First rule of tracking is that there are no rules If it works it works!

Syntheyes 2013