![]() I've bought a flash drive style donge which is bulky, so I've added a 30cm (10") long USB extender "pigtail". Later if it gets broken you may have a hard time replacing the cable, but a lot of chinese stuff do this to cut down costs. USB-A to A plugs aren't standard because you could plug two USB host ports together. The next thing you can do is tweak the default color setings. On the other hand you may not like the compression artefacts, but I had the same issues with my cheap ass USB2.0 grabber and switching to MJPEG was not bad at all. You can try switching to MJPEG to have an adequately high FPS (even 60FPS on lower resolutions is some cases). ![]() YUYV is uncompressed and more desirable, but USB2.0 quickly reaches a bandwidth limitation with it. So you may have some registers exposed which configure video format, etc like a webcam would. Most of these are only a simple USB cam SoC and an HDMI transceiver hanging on the SoCs image sensor input, integrated together. □ A few years ago I fell for a non-isolated MBUS adapter PCB on aliexpress the same way: title stated it's isolated but the pictures and pricing quickly revealed no isolation whatsoever.īefore you get a refund on this you can try a workaround for the 5FPS limit by a query to it's Video for Linux 2 (V4L2) API representation with v4l2-ctl. I've never seen direct chinese-hungarian translations ever since. At a time there was a domestic meme about a cheap 27MHz wireless keyboard, which the chinese translated directly into hungarian as "wireless telegraph keyboard" (arc telegraph literally in hungarian). I'm hungarian and we're left out of the rain almost every time, but I can tell by the english manuals. There's also a language barrier there and most chinese product manuals are well known for unusable eng/ger/fra/etc translations. Seems to me like Amazon can't really write a good enough product description because the chinese spec was already dubious. If you look carefully the title says USB3, but the third illustration loops HDMI signal through it from a PC to a TV set and states that the third (recording) machine (wich is a notebook) is connected with "USB2.0 output". Because these el cheapo adapters are a pig in a poke, you have to always have some kind of suspicion before buying. There seems to be no real telltale sign of it not being USB3 if you only look at the title. ![]() □ I've checked the amazon link you have shared. I wonder if a blue USB A port is just the cheapest way to make your device look like it's USB 3 when it's not really? I've never seen a USB device/gadget with a USB A socket before, this seems strange to me. Perhaps I could have found a cheaper one that works just as well but doesn't pretend to be USB 3?Īre there any hints that a device isn't really USB 3? This particular device requires a USB A to A cable. I suppose I could probably get my money back on this one too but I'm not sure if I could find a better one that doesn't cost a lot more. On checking lsusb -v in Linux I can see it's really only USB 2.0. I also bought a "TenYua" brand "USB 3.0 HDMI Video Grabber" from Amazon - since I understood that I needed USB 3 to get good frame rates, but it turned out that it could only capture 640x480 YUYV at 30 FPS, and higher resolutions were much lower frame rates like 5 FPS. It's worth looking for true USB3 capture dongles in the future to avoid this huge limitation. You simply can't dunk down like 2.1+MPixels uncompressed on USB2. YUYV) will have a limitation either on framerate or maximum resolution, whichever you choose (game capture at 5FPS is not great). This means that uncompressed raw video (e.g. Note on some "el cheapo" webcam based USB video class (UVC) HDMI capture devices: most of these dongles want to look like USB3, but most are only 2.0 High Speed (HS).
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