HDMI video range - Black Crush

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HDMI video range - Black Crush

[ Edited ]

Hopefully somone can help me out here. This black crush issue is driving me crazy. After much research it seems as if the Cisco isb7500 and 7005 boxes send out RGB 0-235 instead of the standard RGB 16-235. Why in the world would they design it like this?

 

Any how, I have an Epson 5020 projector in the basement with hdmi in the wall so running the component cables is out of the question. I can change the range on the projector to extended but it throws off all the colors and disables certain features. 

 

Is there any way to get these boxes to broadcast the 16-235 range through HDMI like every other cable provider does? It has been extremely frustrating since switching from TWC to get a decent picture.

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Employee

Re: HDMI video range - Black Crush

Employee Contributor*
*I am an AT&T employee and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
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Expert

Re: HDMI video range - Black Crush

[ Edited ]

Check out the prices at Monoprice.com.  Their prices are really good, and I bought a 20 foot hdmi cable that has the transformers in the connectors to compensate for the length of the cable.  Also, the cable is really thin and flexible so it can be run any way you need it. This cable only cost me about $9 at the time.  I bought 3 more 6 foot cables for about $2 each.  This was around March this year so the price should not be much higher.  Go check out that site.

Message 3 of 30 (3,139 Views)
Contributor

Re: HDMI video range - Black Crush

So basically what your saying is that ATT doesn't care about picture quality because they are a "teleco company that offers a video subscription service". So ATT has no interest in meeting the same standards of their direct competitors? Pretty silly response.
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ACE - Expert

Re: HDMI video range - Black Crush

No, he was objecting to your phrase "like every other cable provider," since AT&T is not a cable provider.

 

However, I thought that they had fixed the issue with the black crush years ago.

 

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
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Expert

Re: HDMI video range - Black Crush


JefferMC wrote:

No, he was objecting to your phrase "like every other cable provider," since AT&T is not a cable provider.

 

However, I thought that they had fixed the issue with the black crush years ago.


 

They did fix it on the Sigma Designs-based STBs (Motorola VIP1200, VIP1216, VIP1225, Cisco IPN330, IPN430, IPN4320).

 

The problem has reappeared on all of the Broadcom-based designs (Cisco ISB7005, ISB7500, Motorola VIP2250).

 

Here is the old HDMI calibration thread for those interested in the history of this problem:

 

http://forums.att.com/t5/Receivers-Battery-Backup/How-to-Use-the-HDNet-Test-Pattern-to-do-Basic-Cali...

 

 

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ACE - Master

Re: HDMI video range - Black Crush

Well that explains why mine has looked different.  I received a VIP2250 about 3 or 4 months ago and I thought maybe my eyes were playing tricks on me.......Guess not.

"If you find this post helpful and it solved your issue please mark it as a solution.  This will help other forum members locate it and will also let everyone know that it corrected your problem. If they have the same issue they will know how to solve theirs"

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Message 7 of 30 (3,033 Views)
ACE - Expert

Re: HDMI video range - Black Crush


SomeJoe7777 wrote:

 

They did fix it on the Sigma Designs-based STBs (Motorola VIP1200, VIP1216, VIP1225, Cisco IPN330, IPN430, IPN4320).

The problem has reappeared on all of the Broadcom-based designs (Cisco ISB7005, ISB7500, Motorola VIP2250).

 


SomeJoe, Do you think AT&T is sufficiently aware of this?

 

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Message 8 of 30 (3,023 Views)
Expert

Re: HDMI video range - Black Crush


JefferMC wrote:

 

SomeJoe, Do you think AT&T is sufficiently aware of this?


 

Well, there are threads referencing the issue all the way back to when the ISB7500 was first released.

 

I'd say AT&T is probably just as aware of this issue as they are of any other issue.  Interpret that how you wish. Smiley Wink

 

It may be worth it to see if one of the mods can bring the issue to the attention of AT&T's technical team just to make sure.

 

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Expert

Re: HDMI video range - Black Crush


BeeBeeSA wrote:

Well that explains why mine has looked different.  I received a VIP2250 about 3 or 4 months ago and I thought maybe my eyes were playing tricks on me.......Guess not.


 

On the previous STBs when the problem was affecting them, the issue was only present on the HDMI connection.  Black levels were correct on the Component outputs.

 

It may be worth seeing if the same behavior is present with this issue on your STB.

 

 

Message 10 of 30 (3,014 Views)
ACE - Expert

Re: HDMI video range - Black Crush

I sent it to the U-verse care group.  That's about as much as I know how to do with it.

 

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
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Expert

Re: HDMI video range - Black Crush


JefferMC wrote:

I sent it to the U-verse care group.  That's about as much as I know how to do with it.


 

That should work.  They'll forward it to the right people.  As for getting it fixed, who knows.  It took nearly 2 years to get it fixed in the 1st-gen STBs.

 

Message 12 of 30 (3,004 Views)
ACE - Expert

Re: HDMI video range - Black Crush


JefferMC wrote:

I sent it to the U-verse care group.  That's about as much as I know how to do with it.

 


I told them about it on the getsocial site and they were not aware of it, although another user was having the same problem on a rear projector TV too at the same time.  We both have 2250's.  I was able to get it to disappear w/a Non-Destructive Disaster Recovery, but the next reboot would bring it back.

 

I am unable to get a good picture on HDMI (it's actually worse than the original black crush problem), so I've been on component w/no complaints on PQ. Smiley Surprised

 

Chris


Please NO SD stretch-o-vision or 480 SD HD Channels
Need Help? PM ATT Uverse Care (all service problems) or ATT Customer Care (all other problems)
Your Results May Vary, In My Humble Opinion
I Call It Like I See It, Simply a U-verse user, nothing more

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Message 13 of 30 (2,959 Views)
ACE - Expert

Re: HDMI video range - Black Crush

I have been informed that this issue is known to development and the fix will be provided in an upcoming release.

 

I know it's not a lot of news, but it's what I've got.

 

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Message 14 of 30 (2,768 Views)
Contributor

Re: HDMI video range - Black Crush

I had never heard of Black Crush until just now. I have recently switched to Uverse from DirectTV and first noticed the issue watching the final of Boardwalk Empire. I REALLY hope this is something that will be remedied soon as I like Uverse's other features so far... 

 

I guess an ETA is too much to ask for?

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