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there's a reason the Starts with "cheap". all solutions so far cost well over what most people paid for their computers or TVs. there was pro composite captur
by gcb0 10y ago
there's a reason the Starts with "cheap".
all solutions so far cost well over what most people paid for their computers or TVs.
there was pro composite capture under 200 for a long time. and cobsumer ones for 30ish. and thats dealing with analog. hdmi without DRM should produce even cheapers devices, but yeah, everyone has to embrace DRM to name it hdmi
- djsumdog 10y agoThe UVC one mentioned looks to be in the ~$400 USD price range, which is a far cry from the $800 stuff the article author looked at, but it's still more expensive than the <$100 solution presented. Was that $300~$400 worth the time needed to reverse engineer the cheaper solution? It's all about tradeoffs really. At least it's open source so other people can use it now without the time involved. Also if you need to read in from 5 ~ 10 cameras, the cost can grow very quickly.
- jamesfmilne 10y agoIf you want to save cash you can try your luck on AliExpress. Here's a device that looks a lot like the Magewell USB 3 UVC HDMI grabber for $118 (with free shipping): http://www.aliexpress.com/item/Free-Shipping-XI100D-UVC-USB3-0-1080P-60FPS-HDMI-Capture-Dongle-USB-Capture-HDMI-High-Quality/32617673961.html?spm=2114.40010708.4.8.liA3eN http://www.aliexpress.com/item/Free-Shipping-XI100D-UVC-USB3...
- sigio 10y agoI just bought that device 2 weeks ago... and tried it, but so far haven't gotten any video out of it under Linux or Windows.
- jamesfmilne 10y agoThey certainly seem a bit confused about what kind of USB 3 connector they are meant to put on their box!
- JonathonW 10y ago> hdmi without DRM should produce even cheapers devices, but yeah, everyone has to embrace DRM to name it hdmi Not really. HDMI capture devices actually can't "embrace" DRM; no (legitimate) HDMI capture device is permitted to decode HDCP at all since that would defeat the point of HDCP. HDMI capture devices are expensive because it really is difficult-- 1080p is a lot of bytes per second to decode, reencode, and record to permanent storage.
- jamesfmilne 10y agoIt's not HDMI and DRM increasing the costs. HDMI is a far higher bandwidth signal than composite/SVideo, as is USB3. So you have to design a more complex chip and PCB. These are slightly more niche products too, so you don't get the economy of scale you would with something like an ARM SoC. Also these UVC grabber deal in uncompressed video, so they are more expensive but produce a far higher quality capture. The £45 Cat5 grabber is performing some pretty heavy compression to fit the HD video signal down a 100 Mbit Ethernet connection.