Please help find correct USB frame grabber

That one works like a charm on my Pi running LibreElec.

https://fr.aliexpress.com/item…042311.0.0.6a366c37dLzhqr

Mine is plugged directly in the Pi.
It is supposed to draw current from the HDMI.

https://fr.aliexpress.com/item….8148356.1.2265613fdxUbTF

I've been ordering Leds since 2 years in this BTF-lightning shop, always satisfied, never encountered a problem !

60 is the best choice, you get a better effect than 30 without needing too much power compared to 144 (which is overkill in my opinion).

Zitat von mattress

Have fake or counterfeit or wrong grabbers been a bad problem for Pi users? Amazon seems to be rampant

Can't tell you about this, bought the grabber on AliExpress.

I currently have this , which works ok with a 1080p signal to these LEDS, Hope this helps.

Note:This grabber claims to accept a 4K input, however in practice I’ve had to downgrade my SkyTV output to 1080p to the grabber for the Rpi3 to pick it up.

Hey all,

I have bought the same grabber but still get an error when trying to use this grabber:
VIDIOC_S_STD ERROR 25, Inappropriate ioctl for device

Any ideas how to fix this.

Ive tried Hyperion with Raspberry PI OS and also with LibreElec and both give the same problem.

Hyperion itself works, because when I disable the grabber it seems to work perfectly. I can send color commands and the leds light up the correct way.

I finally got it to work. With the help PClin.

Playing with the fps and resolution made the latency a lot shorter.

Worked out of the box on my installation.

Zitat von mattress

Which pi do you use? I am using a pi 3. Does that matter? And RaspberryOS is your OS? Sorry for all the questions. Been fighting this for months

I'm using a Pi3 with LibreElec

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Hey guys .... I'm at my whits end.

I've ordered several of the USB capture device that is linked all over the place, I've ordered one from eBay, and I've ordered 5 different ones from amazon. They all literally show up as the same device, lsusb: "534d:0021"

Some have UTVF007 on their chip, others are counterfeit, or have different chipsets. None have worked.

I'm using a Raspberry Pi 3, I've tried RasPlex, LibreElec, OSMC, RaspberryOS, etc ... nothing changes between the OS's.

I have max_usb_current=1 set in boot.txt

I also seem to be fighting with a faulty APA102 LED strip .... everything seems to point to the first LED being bad or something, I have to experiment more with them.

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Just cut of the strip. Maybe the ic is not good of that led. Then give a try again.

Zitat von mattress

Hey guys .... I'm at my whits end.

I've ordered several of the USB capture device that is linked all over the place, I've ordered one from eBay, and I've ordered 5 different ones from amazon. They all literally show up as the same device, lsusb: "534d:0021"

Some have UTVF007 on their chip, others are counterfeit, or have different chipsets. None have worked.

I'm using a Raspberry Pi 3, I've tried RasPlex, LibreElec, OSMC, RaspberryOS, etc ... nothing changes between the OS's.

I have max_usb_current=1 set in boot.txt

I also seem to be fighting with a faulty APA102 LED strip .... everything seems to point to the first LED being bad or something, I have to experiment more with them.

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I had the same problem with the big search of different grabbers, fighting with hypercon and did it all but found the sollution.
The problem is the software, upgrade your Hyperion.SH to the new one Hyperion.NG and your UTVF007 grabber will work. You can find the software for Hyperion.NG by connecting the PI to the internet and with a fresh install ( Debian/Buster) it will run fine. The problem is not the grabbers but the really sensitive coding in Hyperion.SH

The new software Hyperion.NG is way better and runs flawlesly BUT, it takes much more effort to install correctly onto your PI.

https://github.com/hyperion-pr…ob/master/CompileHowto.md