by StereoPi

An open source stereoscopic camera based on Raspberry Pi

View all updates Mar 04, 2019

Skype 3D and New SLP Image Features

by Eugene Pomazov

As you know, all our Starter and Deluxe kits will include a microSD card with a ready-to-use Raspbian image so you can repeat all of our livestream experiments right out of the box. We’ve been busy polishing existing features and adding new ones to this image. In this update, we’ll share with you some new features and say a few words about our experiments with Skype and 3D video.

Latest StereoPi Livestream Playground (SLP) Image

  • Image size reduced from 5 GB to 860 MB
  • Video livestream to browser (2D and 3D)
  • Livestream to Android over USB cable (Android accessory support)
  • Bash console over web admin panel
  • File editor over admin panel
  • Access to video records over web admin panel
  • RTSP livestream support
  • MPEG-TS livestream support
  • Linux partition now takes 2 GB instead of 4 GB
  • FAT32 partition now created automatically on first boot
  • RPi 3B+ and CM3+ support (updated kernel)
  • Most settings are now in the /boot/stereopi.config file

You can download image file from one of these three mirrors:

Full descriptions of all features will be added to the SLP section of our wiki in the coming days.

Skype and 3D Video

One of our new features is the ability to livestream MPEG-TS. We used this feature to livestream video from StereoPi to OBS (Open Broadcaster Software) with this OBS-VirtualCam plugin installed. OBS creates a virtual webcam accessible to Skype. Here’s a proof-of-concept demo, recorded by Sergey:

And here is a screen capture of my iPhone and our first 3D Skype call:

As the iOS screen recorder does not record sounds, I added music to it.

To get all these things to work, we used two tricks. First, we used mic from Logitech webcam connected to the same computer to provide the audio to Skype, since the OBS-VirtualCam cannot emulate a sound device, so sound from StereoPi’s microphone isn’t available to Skype.

Second, we avoid a one-second delay between audio (due to an internal OBS video buffer) by first streaming the video from StereoPi to gstreamer on Windows and then pointing OBS to use the gstreamer window as its video source, which resulted in a delay of only about 100 milliseconds.

This test shows it is possible to use stereoscopic livestream with a lot of common software, like Skype and other video-related programs, all without modification since they already work with a traditional camera.

If you want to discuss more features, please join this thread on the Raspberry Pi forum.

About the Author

Eugene Pomazov

StereoPi  ·  Realizator  ·   St. Petersburg

$164,339 raised

of $35,000 goal

469% Funded! Order Below

Product Choices


StereoPi AnyCase Kit

With AnyCase Kit you can get your setup in a 10 minutes, before you go to your 3D printer or laser cut machine! You can assemble any case with 25, 65, 120 or 200 mm stereobase, or for 360 degree video with just a screwdriver! And you have 12 more camera ribbons now, do not afraid to bend you cables in your bold experiments!


StereoPi Slim Edition

Perfect for DIY ninjas and those wanting to embed StereoPi in a tight space. This board is the same as the standard edition, but without all the bulky connectors - the Ethernet RJ45 jack, GPIO header, and dual USB Type-A connector have not been populated. To use this board, you will need your own Raspberry Pi Compute Module, cameras, and camera ribbon cables. Two short power cables already included.


StereoPi Starter Kit

This kit has everything you need to get started right away. The kit includes one StereoPi Standard Edition board, two V1 cameras (w/ ~20 cm ribbon cables), one Raspberry Pi Compute Module 3 + Lite, and everything in the StereoPi Accessories Kit (two short ribbon cables, one USB power cable, two power cables, one V1/V2 dual-camera mounting plate, and one wide-angle dual-camera mounting plate). We've also included a microSD card pre-imaged with Raspbian and all the stereoscopic video and image demos you see on this project page.


StereoPi Deluxe Kit

This kit includes everything in the StereoPi Starter Kit and adds two wide-angle (160°) cameras (w/ ~20 cm ribbon cables). With this kit, you'll be able to run all of the demos shown on this project page and start experimenting on your own. You will reign supreme over your stereoscopic domain.



We are a small team of geeks who have been making remote-controlled things with livestreaming video since 2010. We've done everything from boats and planes, to robots, copters, and VR helmets. If we can't find the right tools for our projects, we build them ourselves.


Sergey Serov

Kirill Shiryaev



Full-service Manufacturer

See Also

Subscribe to the Crowd Supply newsletter, highlighting the latest creators and projects: