#v4l2

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Wintermute_BBS @Wintermute_BBS@oldbytes.space · Jul 23, 2026
Yet another toot regarding #FreeBSD and #tvheadend with a #Hauppauge WinTV duoHD - while it is possible for me to pass the #v4l2 driver via #webcamd to the userspace and actually get DVB devices like /dev/dvb/adapter01 etc. the programs I want to use with these devices just won't work properly. Unfortunately, tvheadend or the commad line tool w_scan simply can't find any station over DVB-C. Using the same hardware that works without problems on Linux. Meh. So one solution I found is to set up a #bhyve instance on your FreeBSD desktop system runing Linux/tvheadend and then pass the #usb #dvb device through to that bhyve instance. Sounds a bit like cheating - after all I want to replace my infrastructure Linux server (serving CUPS, dnsmaq and tvheadend) with FreeBSD . But if that's the only way for FreeBSD to handle DVB-T2 devices, then it shall be that way ... (I only hope that it will work) 🤷
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Maxwell (it/its) @maxissakitsune@meow.social · Jun 14, 2026
Question regarding webcams and v4l2loopback on Linux Hover or focus to reveal Sensitive
I have a #webcam on a #Linux system and hypothetically, if I were to do the video game streamer thing, I might want to use it to feed video from that camera to two apps simultaneously, namely: Head tracking software for a video gameFace tracking software for a VTube avatar But from what I've seen, only one application on a Linux system using V4L2 can get a video stream from a webcam at a time. The solution I've seen proposed to this problem is v4l2loopback, but none of the sources I've seen bothered to explain how to use it, and the wiki they link to is bare-bones and doesn't seem to explain much either. Furthermore, I want to be sure that the camera is providing video to these apps at its maximum framerate and not just its maximum resolution, and I don't know how I'd configure this. Or... really anything at all. Is there any actually relevant documentation I should be reading to solve this problem? #Video4Linux #V4L2 #V4L2loopback
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