Author Topic: Best solution for capturing 1080P HDMI  (Read 1887 times)

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Offline ali_asadzadehTopic starter

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Best solution for capturing 1080P HDMI
« on: September 26, 2019, 10:54:48 pm »
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.
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Re: Best solution for capturing 1080P HDMI
« Reply #2 on: September 27, 2019, 12:36:53 am »
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Offline ali_asadzadehTopic starter

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Re: Best solution for capturing 1080P HDMI
« Reply #3 on: September 27, 2019, 09:14:44 am »
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.
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Offline Gribo

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Re: Best solution for capturing 1080P HDMI
« Reply #4 on: September 27, 2019, 01:38:12 pm »
There are PCIe HDMI capture cards out there, anywhere from 80USD to more than 5000USD. Why do you want to reinvent the wheel?
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Offline ali_asadzadehTopic starter

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Re: Best solution for capturing 1080P HDMI
« Reply #5 on: September 27, 2019, 02:03:56 pm »
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 ;)
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Offline mariush

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Re: Best solution for capturing 1080P HDMI
« Reply #6 on: September 27, 2019, 02:16:29 pm »
Dave reviewed an epiphan av.io 4K capture card, that works on USB 3.0

It 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...

 

Offline Kilrah

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Re: Best solution for capturing 1080P HDMI
« Reply #7 on: September 27, 2019, 03:11:08 pm »
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.
« Last Edit: September 27, 2019, 03:19:30 pm by Kilrah »
 

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Re: Best solution for capturing 1080P HDMI
« Reply #8 on: September 28, 2019, 03:21:23 am »
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.
More 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.
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Offline ali_asadzadehTopic starter

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Re: Best solution for capturing 1080P HDMI
« Reply #9 on: September 28, 2019, 06:26:56 am »
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 QTY ^-^ do you know some Board or parts for Cortex A parts?
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Offline Kilrah

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Re: Best solution for capturing 1080P HDMI
« Reply #10 on: September 28, 2019, 10:06:58 am »
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.
 


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