HDCP Stripper?

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Guspaz
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Re: HDCP Stripper?

Post by Guspaz »

ldeveraux wrote: Mon Nov 13, 2023 12:59 pm
Unfortunately I couldn't get signal from my GPU > Monoprice Converter > Elgato HD60X. The second I remove the Monoprice I get signal. For the life of me I cannot figure out how to use Elgato's recording software. I can get video, but no chance at audio, it's just garbled static for some reason. I was able to record through OBS, not sure how well the audio sync is compared to my previous attempt. I also feel like I'm using OBS wrong as recording 1080p60 from a 1080p60 source doesn't look very 1080p60 to me. Is there a tutorial to do what I'm trying to do or have I asked that already?
THanks for the assistance all!
The Monoprice converter doesn't remove HDCP, it just downgrades it, you'll need to put one of your existing HDCP strippers between it and the sink. That is:

Source -> Monoprice Converter -> HDCP Stripper (like an HDMI splitter) -> Sink
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kitty666cats
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Re: HDCP Stripper?

Post by kitty666cats »

I saw EposVox recommend this in some video I randomly stumbled across, but it was a few years old. I read some quite recent Amazon reviews (there’s several from the last few months ) and it seems like these ones are still stripping HDCP, unlike the Orei which used to but doesn’t anymore. All these splitters with the same housing are a gamble, but it looks like this is one you can still rely on. It should almost certainly work out, if you give it a try:

https://www.amazon.com/ViewHD-Powered-S ... B004F9LVXC


EDIT: If you read the reviews, there’s one from 2014 that sounds extremely similar to your situation @ldeveraux
ldeveraux
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Re: HDCP Stripper?

Post by ldeveraux »

kitty666cats wrote: Fri Nov 17, 2023 11:23 am I saw EposVox recommend this in some video I randomly stumbled across, but it was a few years old. I read some quite recent Amazon reviews (there’s several from the last few months ) and it seems like these ones are still stripping HDCP, unlike the Orei which used to but doesn’t anymore. All these splitters with the same housing are a gamble, but it looks like this is one you can still rely on. It should almost certainly work out, if you give it a try:

https://www.amazon.com/ViewHD-Powered-S ... B004F9LVXC


EDIT: If you read the reviews, there’s one from 2014 that sounds extremely similar to your situation @ldeveraux
Yeah I have like 3 of those. The one that I keep on hand was made by SuperSun and of course isn't sold any more.
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bitkid
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Re: HDCP Stripper?

Post by bitkid »

NewSchoolBoxer wrote: Fri Oct 27, 2023 7:26 am Fudoh knows much more about this than me but where I follow, his advice is correct. Copyright protection in digital video doesn't exist in analog video so the D/A to A/D route will work. You're basically capped at 1080i / 720p for Component due to evil television manufacturers but RGB over VGA can push above 1080p but no 4k.

Another option is to convert the HDMI to SDI and then capture that in OBS or whatever. SDI is this amazing and ancient digital format that video broadcast studio use which has no copyright protection since they don't need to block video from themselves. Blackmagic sells somewhat expensive HDMI to SDI converters and that can then be captured. You wouldn't have the quality loss that you'd get in the D/A to A/D route.

I don't think this applies to you but I've not seen any proof that 240p / 288p can exist in SDI. At least the Blackmagic converters don't support it.
1. Most HDMI -> SDI converter I've seen do not support HDCP, at least none of the ones made by the big-name broadcast video hardware manufacturers. These devices are typically intended to be used with broadcast gear that wouldn't be using HDCP on the HDMI connection (i.e. cameras, digital decks, frame syncs, etc). Converting HDMI to SDI is generally not a get-out-of-jail-free card to bypass HDCP encryption. That being said, there may be some converters on the market that would support HDCP but I am not yet aware of any.

2. A couple people mentioned SDI video being sub-sampled. Yes, a lot of SDI gear defaults to using YCbCr on the wire, usually 8-bit (UYVY) or 10-bit (v210). But SMPTE specs allow for other pixel formats on the wire, including 8-bit, 10-bit and 12-bit RGB. Most SDI converters and capture cards I've used support both YCbCr and RGB.

Source: I work for one of the popular SDI hardware companies.
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Unseen
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Re: HDCP Stripper?

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bitkid wrote: Sun Nov 26, 2023 11:00 amThat being said, there may be some converters on the market that would support HDCP but I am not yet aware of any.
There are, the one HDMI->3G SDI converter I happened to buy on eBay a long time ago decrypts HDCP-protected signals and passes them on exactly the same way as a non-encrypted input signal. But it's completely unbranded and with a sample size of one I have no idea how common that feature is.
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bitkid
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Re: HDCP Stripper?

Post by bitkid »

Unseen wrote: Mon Nov 27, 2023 9:08 am
bitkid wrote: Sun Nov 26, 2023 11:00 amThat being said, there may be some converters on the market that would support HDCP but I am not yet aware of any.
There are, the one HDMI->3G SDI converter I happened to buy on eBay a long time ago decrypts HDCP-protected signals and passes them on exactly the same way as a non-encrypted input signal. But it's completely unbranded and with a sample size of one I have no idea how common that feature is.
Hrm, can you post a photo anywhere? I had heard someone at work talking about the existence of them on AliExpress a long time ago but I've never encountered one myself.
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Re: HDCP Stripper?

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bitkid wrote: Tue Nov 28, 2023 10:47 amHrm, can you post a photo anywhere?
It's just one of those generic black boxes. I have no idea if this particular one also happens to strip HDCP, but physically it looks the same: eBay sample
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