quick tip about debugging v4l device: sudo modprobe vivid sudo dmesg [364212.353006] vivid-000: V4L2 capture device registered as video2
gst-launch-1.0 \ -v \ v4l2src device=/dev/video2 !\ decodebin !\ queue ! videoconvert !\ fpsdisplaysink sync=false You should see color bars and some very small text (too small for me to read) in the upper corner. This helps confirm that the gst command can display video data. It does not confirm that the Opsis is not working, just helps eliminate possibilities. On Tue, May 26, 2020 at 12:33 PM Carl Karsten <c...@nextdayvideo.com> wrote: > > > On Tue, May 26, 2020 at 7:13 AM David LeP0le <tesintes...@gmail.com> > wrote: > >> Hello, >> i was some kind of early adopter of the numato opsis. >> I get it on crowdsupply. I let it in my studio for year and i try to re >> use it now since 3 days, concentrate on it. >> >> What i feel is like it's a quickly difficult card to work with. >> >> It's not easy to find the good information to use it really. >> >> Best place is unfortunenately not the website of the project. >> i mean : https://hdmi2usb.tv/ >> There it's a place to learn that the card can do a lot but no way to >> learn other things except flashing thing. >> In that case it's possible to have a way to something. >> It's quite amazing. >> I need to search something really hidden and i find some help there: >> https://debconf-video-team.pages.debian.net/docs/opsis.html >> >> but it's quite difficult to figure out how to simply use the card and the >> switch... >> So The displayport are simply optionals. >> So it's trickky to understand because there is 5 years since the opsis is >> out... >> It's not easy to drive a opensource project like that...Ok >> >> BUT it's impossible to let the final-user only in a programming zone, >> with no other perspectives. >> i think there is a problem. >> >> So i don't want to be rude, i'd just want something to work. >> >> Maybe it's possible to get exemple of setup and a firmware adapt for >> different setup...with differerent repo in function of uses and projects >> It's communication and education. >> I'm just trying to use the opsis and i'm just a professionnal of making >> picture for shows and film, so i'm some kind of final user. >> >> That's why i expect efficency, and clear way to work with. >> It mean : plug that, plug this, use that raspberry or laptop with that >> setting, and a minima tricks to work with all the port i mean ethernet so >> old tech, and displayport... >> And after what soft to tallk with the card with all the links and howto >> get something stable. clear repo for ubuntu, or debian, it's not easy like >> it is now. >> A tuto for starting something from scratch... at the bottom level to more >> complicated examples. >> >> Really i want to help at my level. >> >> THE SITUATION >> >> So i use the hdmi ports i understant how to start the inputs and outputs >> I understand how to play with the matrix (these commands need to be on a >> page of https://hdmi2usb.tv/ and how to get there, install and so on) >> The problems i got: >> when i plugs cameras i need to set the videomode to PAL or NTSC so 12 or >> 13 720X576 give the best results, i can get 2 cam working in that mode >> BUT no screen sync, if i plug my computer it detects the opsis 1280x720 >> but orange screen on my display, >> > > first a note about labels there is a bug > https://github.com/timvideos/HDMI2USB-litex-firmware/issues/483 > so we will only use the "1,2" labels when cut/pasting output, like my > Opsis shows: > output1: 1280x720@50.00Hz from input2 (underflows: 0) > otherwise we will talk about input 0 and 1 > > Orange means there is no data on input 1 > I should mention this is also new, so people may tell you it is from an > orange hdmi input if they have not used this version. > good news: you have successfully flashed new firmware. > Red means there is no data on input 0 > > With only a display device (lcd) plugged into output0, you should see: > x c 0 0 = red > x c 1 0 = orange > x c p 0 = test pattern > > I tried to make a quick demo of how to use the UVC over usb, and that > failed for me. > I have not had time to debug. > > if you do: > x c p e > you should get the test pattern on /dev/video0 (or whatever your linux > system assigns it) > > Are you able to see the test pattern on some app that will read from a uvc > viddo device? > > This has worked in the past: > > gst-launch-1.0 \ > -v \ > v4l2src device=/dev/video0 !\ > decodebin !\ > queue ! videoconvert !\ > fpsdisplaysink sync=false > > This gives me a black stream. > > I need to revert my firmware to > Jun 2 2019 v0.0.4-487-g5940dcb > or > Sep 30 2018 v0.0.4-340-g3fb4e7c > > as I know one of those had working uvc. > > but no time today :( > > > > > > > > >> x c 0 0 or other changes give nothing else. >> Secondary mde change nothing... And the encoder status announce 0fps and >> 0 quality... >> You understand it's quite impossible to use it for a show... >> Which solution can we build to give a chance to this opsis... >> Thanks >> Regards >> >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "hdmi2usb - A HDMI capture solution" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to hdmi2usb+unsubscr...@googlegroups.com. >> To view this discussion on the web, visit >> https://groups.google.com/d/msgid/hdmi2usb/1b6648c9-24d9-46eb-9952-85e8aa9074cb%40googlegroups.com >> <https://groups.google.com/d/msgid/hdmi2usb/1b6648c9-24d9-46eb-9952-85e8aa9074cb%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > > > -- > Carl K > -- Carl K -- You received this message because you are subscribed to the Google Groups "hdmi2usb - A HDMI capture solution" group. To unsubscribe from this group and stop receiving emails from it, send an email to hdmi2usb+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/hdmi2usb/CADmzSSiq73%2BZFbrv7Z4zboDO2oWQ2eeNfAZC0%2BmKtbN%3DdQDLxg%40mail.gmail.com.
