WEBVTT

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you know it wasn't too long ago that if you wanted to get a crisp image and

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surround sound from your shiny new DVD player it wasn't unrealistic to be using

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11 different analog cables mercifully the HDMI cable came to

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our rescue a few years back with the most recent version

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2.0b capable of carrying 4K at 60 HZ

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with up to 32 channels of surround sound

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and even HDR all on that single cable

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wow but of course with all the cool

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copyrighted content flowing through that one convenient pipe the powers that be

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wanted to make sure that it couldn't be copied without permission which is why

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most HDMI source and Display Devices set

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toop boxes graphics cards TVs even the chomecast also supported feature called

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high bandwidth digital content protection or

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the idea behind hdcp is to keep

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devices from recording content at its

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original quality which obviously doesn't

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mean that you can't capture anything off of your TV or computer if that were the

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case twitch wouldn't be raking in all that game streaming money hdcp

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restrictions only kick in with specifically encrypted content most

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commonly movies and TV shows chances are

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you've encountered it if you've ever tried to create a backup of a Blu-ray

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you bought or if you've tried to run a screen capture software while watching

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Netflix which does use htcp compliance

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streaming now I know what you're thinking G Linus what could possibly go

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wrong with such an overwrought anti-piracy scheme well plenty of things

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there are a number of issues with hdcp that have ended up frustrating average

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users far more than the people trying to

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make a quick Buck Distributing pirated copies of Blade Runner as you might

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guess the fact that HDMI and hdcp with

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it has gone through several revisions

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means that trying to hook up a newer device to an older device can result in

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your content of choice completely refusing to play and even if all your

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equipment is relatively new you can still run into dreaded hgcp hand shaking

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errors you see hand shaking is a process

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where each HDMI device recognizes the other and exchanges encryption Keys

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although this usually happens without a hitch some setups especially on the

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bleeding edge or due to poor after sales

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support from the manufacturers as often happens happens with TVs can be finicky

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and if you don't turn your devices on in the correct order or your magic

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eightball is giving you some bad news

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you'll only see snow or a blank screen

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instead of getting an actual picture this can even happen if you're not

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trying to watch encrypted content my TV

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at home I can't access the

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BIOS and on the subject of TV let's say

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you're running something like a sports bar and you want to show the big game on

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lots of screens with HDMI htcp can cause

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problems here as well since dumb Splitters that you would normally use

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with an analog connection won't work due

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to the digital handshaking and encryption processes instead you're at

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the mercy of your cable or satellite provider who gets to decide how many

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displays their set toop boxes will support typically a number so they can

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cram extra set top boxes down your throat for a nominal fee but that isn't

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to say that there aren't workarounds the most common way to defeat some of these

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hdcp frustrations is with a proper HDMI

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splitter many of which ignore hdcp and

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sometimes allow new and old equipment to play together more nicely of course they

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also allow you to send your HDMI signal to multiple screens but the splitter

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still has to be recognized by your Source device which can be hit or miss

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depending on the firmware and exactly what version of hdcp your gadgets and

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the splitter itself support so your mileage may vary so the most frustrating

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yet unsurprising thing about all of this is that while htcp is great at angering

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normal consumers it's actually terrible at stopping piracy as the encryption

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scheme it uses is relatively weak and

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has already been cracked including the most recent version at the time of

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filming 2.2 so perhaps one day we'll be able to

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convince our corporate overlords to ditch

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hdcp but given that these are the same Geniuses that gave us things like root

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kits on audio CDs mandatory online gameplay and product activation we may

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