Building your own USB camera with GStreamer

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USB cameras are commonly used in desktops and laptops for streaming video or participating in video conferences. Thus, USB is more or less the standard for connecting a camera to a PC. Linux allows to turn hardware that has a USB device controller (UDC), for example the Rapsberry Pi 4, into a USB peripheral. The kernel provides a number of different USB gadgets to implement various USB device classes. One of them is the UVC (USB Video Class) gadget to implement an USB camera. However, correctly configuring such a system and passing a video stream to the USB gadget is not that easy. Fortunately, the new uvcsink element allows you to easily stream an arbitrary GStreamer video pipelines into the UVC gadget and, thus, to any USB host system. Michael will show you how to prepare a system as a UVC gadget and stream video data to an UVC host using a simple GStreamer pipeline like "gst-launch-1.0 videotestsrc ! uvcsink". He will also give some insight into the implementation details of the uvcsink element.
Creation date: Sept. 26, 2023
Speakers: Michael Grzeschik
License: CC BY-SA 3.0
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