![]() ![]() It would be good for aerial stitched panoramas for instance I imagine. These points should be separated quite a bit in the frame. It uses the Camera Tracker in recent Blender versions to track 2 points which must remain visible throughout the sequence. I havent tried it but it looks very powerful. When you have optimised the sequence you output as separate frames.īlender3D has a plugin (addon) which can be used for tracking and stabilizing panoramic (equirectangular 360) videos This forces it to make common points between the last and first frames which otherwise it often might neglect to do. It helps if you first create control points between say the first 10 frames and the last 10 frames (by selecting those 20 frames) and then generate control points for the rest of the frames. It is fast until it runs out of memory and then it becomes very slow. It makes a difference to how long a sequence you can process if you create a proxy version of the frames at lower resolution (say 800 by 400 pixels) and then apply that as a template - but the template can crash too. It is buggy with long sequences (say more than 600 large frames) on my hardware. At least not so far as I have worked out. With PTGui you can level as well as stabilize the entire shot only. Here is a tutorial for stabilization with Hugin (free) but the rest of this section just applies to my experience with PTGui: I am only experienced with PTGui and I use it quite a lot for panoramic stabilization of this kind of shot. On a pole in windy conditions for instance. PTGui (and Hugin) can be used to stabilize all sorts of (fixed position where you are trying to hold the camera steady in the same direction) panoramic videos if you convert the video first to frame sequences. I think it can only handle 360 videos (unless you pad them out to 360). I am not sure if you can input an already stitched panorama (like one of a pair of stereo 360 equirectangulars say) but I think you can. It is a big achievement though to have direct tracking of panoramic videos - with a standard 3d program you would need to convert your equirectangular to an extracted rectilinear view and the tracking might not be as robust as Videostitch can achieve with the data from the whole 360 frame. However this is a beta release and it is not very stable and there is some discontent with modifications of the operation of the stabilizer in the latest beta and I got a thin black seam at the end of my 360 output in my testing. But the ease of use is great and it is, like the rest of Videostitch operations, extremely fast. It works but it is by no means as powerful as what you could do with a dedicated 3d or some tracking programs where you could, say, remove all roll and pitch motion, set them both to zero, and apply smoothing to the yaw track so you get a level, smoothly turning video output. As you can see by the initial graphic on the home page in the interface there is a tab where you can see tracking data for roll, pitch and yaw through the duration of the stitched shot and you can apply this data to stabilize it. ![]() It is pretty intuitive in operation if you are familiar with PTGui which is used beforehand to create stitching templates. There is a demo version (of the latest beta which includes stabilization) which will output a limited resolution video. Videostitch is a popular (but not cheap) program for stitching panoramic videos (2D) from camera arrays - like from Gopro or Elmo QBIC rigs. I thought I would start a new topic on panoramic video stabilization - hardware and software - if for nothing else to keep all my links to this in one place.
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