360 Camera Techniques

TECHNIQUE: How to create a bullet time tiny planet 360 video

Bullet time tiny planet 360 video

OK so everyone is talking about the teaser video for Insta360’s new camera, with various theories about how it was done.  Here is a tutorial for making a bullet time tiny planet 360 video!

When Insta360 posted the teaser video for their new camera with a bullet time effect, many people wondered how Insta360 made the video, with some wondering if it’s a drone and others speculating that the camera could somehow take an orbital 360 video.  But no, the explanation is much more mundane.

First, here is a video with this effect:

This effect is made with the camera on a string that is swung around, a technique first made popular by freeskier Nicolas Vuignier years ago. The reason the video looks like it’s barely moving is because it’s on super slow motion, which requires a very high frame rate. In this case, I used a 2017 Samsung Gear 360, which has a 120fps mode, albeit at only 1440 x 720 resolution. It appears that the new Insta360 cam will also have a high framerate mode. And because Insta360’s video was only 720p, I am also guessing that the resolution won’t be very high either in this high-fps mode.

Here are the things you need for this effect:
1. A camera with high frame rate for super slow motion.
The higher the frame rate, the slower and smoother the motion can be. 60fps is probably the absolute minimum for this effect unless you want it to look like stop motion animation. 🙂 If the camera has image stabilization (like the new Insta360 camera) that would be desirable but not absolutely necessary – you’ll see why below.

Here are portable cameras with high speed 360 mode:
2017 Samsung Gear 360 – 1440 x 720 @ 120fps
Kodak Orbit360 – 1280 x 640 @ 120fps
– Insta360’s new camera – resolution and fps TBA
– Insta360 Pro has a 4K 120fps mode but it’s too heavy to swing around… 🙂

Note that this doesn’t have to be a 360 camera but of course a 360 camera would allow you to change perspectives. There are many non-360 cameras with a high-speed / slow motion video mode, such as GoPro Hero5 Black (1280 x 720 @ 240fps or 1920 x 1080 @ 120fps), or Garmin Virb 360 (1920 x 1080 @ 120fps), and several smartphones.

2. A stabilizer wing for the camera.
If you just attach a string to the camera and turn it around, the camera will probably twist around. Fortunately there are a few companies that have made stabilizer wings for this kind of video. Here are a few:
Centriphone.me (thanks to Etienne Leroy of V360 video editing app, to Mark Rodenburg, and to Frederic Sidler for bringing this to my attention!)
Spincam SPB
Centripro for GoPro Hero 3 and 4.
CentriPro for Hero5 Black

You can also of course try your own DIY version. 🙂

Find a suitable area with enough space to spin the camera and watch for bystanders.  When you’re ready to shoot, switch to high speed video mode, and swing the camera around you.   Note that each of the stabilizers above will fly “forward.” I find it is more interesting to have the camera on the bottom of the stabilizer, so spin the camera such that when it flies forward, the camera will be below the stabilizer.  Depending on your stabilizer, that direction may be clockwise or counterclockwise.

Note: You can walk while spinning the camera — just be careful of your surroundings.

After shooting and stitching your video, it’s time to edit.  During editing, you can use any video editor that has a function for slow motion (ideally with native 360 video support), such as Adobe Premiere Pro or Magix Movie Edit Pro Plus 2017.   By default, the video you recorded will play at normal speed.  You need to apply a slow motion effect to slow down the video.  At 120fps, slowing down the video to 20% of its original speed will yield a frame rate of 24 fps which is still quite smooth.

If all you want to do is make a spherical 360 video, then you’re basically done (after you stitch the output from the 360 camera).  However, because high speed videos are usually at lower resolution, I prefer to output it as a non-360 with an extra wide field of view, which will make the lower resolution less apparent.  To do that, you’ll need a software such as Insta360 Studio, which can render a 360 video as a non-360 video, while you have full control over the perspective of the final video.

That’s all there is to it!  For more techniques, please bookmark 360 Rumors, subscribe via email, and/or like the 360 Rumors Facebook page!

About the author

Mic Ty


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