Best solution for capturing 1080P HDMI - Page 1
Forum section: electronics / projects

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: September 26, 2019, 10:54:48 pm
content: Hi,I need to find a good solution (cheap and easy way) for capturing 1080P HDMI video and audio, preferably multi-channel, and I should encode and record that on a windows machine, do you have any chip or way of doing that? do we have custom ASICs? what about chines solutions? do you know some? I would do the PCB side either with C# or Node.js, which ever is easier.

author: oPossum
author_rank: Super Contributor
timestamp: September 26, 2019, 11:04:43 pm
content: https://www.blackmagicdesign.com/products/decklinkhttps://www.epiphan.com/products/dvi2pcie-duo/

author: NiHaoMike
author_rank: Super Contributor
timestamp: September 27, 2019, 12:36:53 am
content: If you want cheap, get a LKV373A.https://www.eevblog.com/forum/reviews/lkv373a-hdmi-streamer-my-findings/

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: September 27, 2019, 09:14:44 am
content: Thanks, But I need to design the damn thing, so I should find some ASIC or an IC to do the job, maybe ZYNQ is the way, but I want something cheaper and easier.

author: Gribo
author_rank: Frequent Contributor
timestamp: September 27, 2019, 01:38:12 pm
content: There are PCIe HDMI capture cards out there, anywhere from 80USD to more than 5000USD. Why do you want to reinvent the wheel?

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: September 27, 2019, 02:03:56 pm
content: There are some equipment that are generating HDMI output, I need to capture them, it's for a security burglar alarm system,I want to find a cheap solution, so I can support more customers

author: mariush
author_rank: Super Contributor
timestamp: September 27, 2019, 02:16:29 pm
content: Dave reviewed an epiphan av.io 4K capture card, that works on USB 3.0It uses an ADV7619 HDMI decoder and a FPGA along with some other stuff (ram, flash for fpga code, regulators etc) :(jump to 21:30 for internals of the av.io) :So yeah, you could make your own, the chip is something like 10-20$ but all the other parts add to the BOM and the software development would take a LOT of time...

author: Kilrah
author_rank: Unknown
timestamp: September 27, 2019, 03:11:08 pm
content: You're unlikely to be able to make a cheaper solution than the oodles of existing consumer products that do this. You can find some for $45 or so.

author: NiHaoMike
author_rank: Super Contributor
timestamp: September 28, 2019, 03:21:23 am
content: Quote from: Kilrah on September 27, 2019, 03:11:08 pmMore like just over $30 for the LKV373A. I think, however, that he's looking to integrate HDMI capture into a more complex system. No idea how much the chipset costs by itself, but there are efforts to understand the system better.All in all, if you're building just a few units, where "few" could be as many as hundreds, just embedding a complete LKV373A would probably make the most sense. It's when you're planning on actual mass production of thousands of units or more where the cost of developing a custom board makes sense.

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: September 28, 2019, 06:26:56 am
content: Thanks for the feedback, But I wonder where are the Cortex A designs goes? don't we have something super-cheap like Allwinner tech parts with HDMI input and an encode engine? they are selling some of their parts @ around 5USD in single QTYdo you know some Board or parts for Cortex A parts?

author: Kilrah
author_rank: Unknown
timestamp: September 28, 2019, 10:06:58 am
content: I've never seen a general purpose SoC with a direct HDMI input, what they have is camera CSI/MIPI interfaces. Conversion is not straightforward.