If no selection has been made, all Tracks will be tracked. Let’s say you have a bump in the camera’s motion: The Tracks accelerate quickly but since all Tracks have more or less the same increase in velocity, the Motion Tracker will recognize this bump and leave the Tracks as they are. The following properties are shown in the list for each Track. Why Tracks have to be fine-tuned is explained under What are good and bad Tracks?. These can be scaled individually using the handles at the bottom right corner (Tracks that were already tracked will be tracked again). These 3 buttons (or the corresponding commands in the … If the pattern size lies exactly on the circular shape, it doesn’t matter if the background changes (which would on the other hand be the case with a square pattern size, meaning that the pattern might not be found). Imagine the camera moving to the right: these points do not define a definite point of reference in 3D space - they change according to the perspective and are therefore useless. Try using Automatic Tracking first and if a good camera re-construction is produced, fine. Tracks that lie at a great distance from the camera (horizon, sky, etc.) Why not 100%, 0%, 0%? Again, a brief statement about how 2D Tracking works: The 2D pattern of definitive points in the footage are tracked (followed) over a long time. If this difference is greater than the threshold value defined here, a virtual keyframe will be created. Clicking on them, whereby the usual keys (, Using the Lasso Selection tool: click and drag around the Tracks you want to select. Lynda – After Effects Guru: Tracking Cameras and Stabilizing Footage (2021), Skillshare – Motion Tracking with Cinema 4D R20 for Beginners, Lynda – InfraWorks 2021: Traffic and Mobility Analysis, Lynda – OpenRoads Designer: Civil Geometry Quickstart, Sneak peek: Chaos Group’s R&D work on V-Ray’s VRayMtl, Download the new free edition of Auto Character Setup, Auto Character System 3 aims to redefine rigging in Modo, Download 500 free stock FX elements from ProductionCrate. Normally, a User Track is created by creating a key and tracking it. Finally I take you through the process of transferring your After Effects information over to Cinema4D. Learn how to use Redshift and C4D's Physical Renderer with R20's motion tracker to composite 3D renders onto your video footage. Learn how to use Redshift and C4D's Physical Renderer with R20's motion tracker to composite 3D renders onto your video footage. They will be filtered before they are displayed (see Filter Tracks), which means that imprecise, bad paths and their corresponding Tracks will be hidden. This filter waits until all other filters have been run and then filters the Tracks that are shorter than the defined length in frames. Of course the entire footage will not be searched, which would be too time-consuming and senseless (in most footage, each frame is only slightly offset from the previous frame). Tracks selected in the list can be deleted by pressing the Del/ Backspace key. If the Auto Replace Lost Tracks option is enabled, lost Tracks will be replaced with new ones that were generated at other positions in the footage and tracked. The Tracks list contains a list of all User Tracks that were created (multiple selection possible) that correspond to Tracks selected in the Viewport. Select Tracker View if the a selected User Track’s footage should be displayed in consideration of the color channel weighting described below. Select Original to display the footage as usual. The Filter Track settings filter out faulty Tracks: left unfiltered (all filters disabled), right filtered. Generally speaking, the best Tracks are those that can be precisely followed (tracked) over a long period of time and also represent a definite position in 3D space. Tracks can be created automatically and/or manually at any point within the footage. This is done as follows within the temporal range defined in the Footage tab’s menu: Normally, it is recommended that the Auto Track button be used because it tracks in both directions (temporally). If enough of these types of Tracks are present and cover a large area, the algorithm can create a correspondingly more precise camera reconstruction. In previous versions of Cinema 4D, only the combined brightness of all 3 color channels was taken into consideration. These can be selected and deleted prior to starting reconstruction. This filter is similar to the Maximum Acceleration filter described above but it does not view each individual Track separately but in conjunction with neighboring Tracks. Lost Tracks: Tracks selected at a different time in the animation that cannot currently be tracked are colored dark red in 2D mode (see image above) and can be selected with the LMB and moved to the correct location. However, you will always have situations that will require you to manually set Tracks - often in addition to those that were created automatically. Required fields are marked *. This can make it easier for the algorithm to identify Tracks for fast and smooth camera movements since the search region will most likely lie somewhat closer to the next assumed Track position. A brief description about the differences between Automatic Tracking and Manual Tracking: You can use Automatic Tracking and Manual Tracking individually or simultaneously. In the image above, the Track was positioned on the left key and tracked. If you take a look at the image above you will see that the pattern size encompasses the small horizontal line of the letter F. If the algorithm tries to locate this pattern in the next frame it can happen that it erroneously identifies the large horizontal line as the Track. Note that you can define negative values. Tracks that jump to other positions or shift in relation to the underlying footage are also faulty. The same applies to reflexions (a.k.a. a look at the Motion Tracker in Cinema 4d Here, Sam shows how you can track the footage, clean up the tracking data, and remove the errors that can impede a good track. Optimal setting for red, green and blue would be 100 %, respectively the less that will be out! 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