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Posted Dec 6, 2011
7:07:28 PM
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Confirmed: vip2250 fixes surround sound audio dropouts!

I had a vip1225 hooked up via HDMI to an Onkyo receiver (HT-S8400 to be specific) and I had problems with audio dropouts on surround.  Every few seconds, for a fraction of a second, the audio would drop.  It drove me nuts and I tried everything to fix it.. I tried different (new) HDMI cables, and even a different home theater system!   In the end, I had to keep it on stereo.

 

I went over and over this with UVerse support.  They kept wanting to send me to the paid support line for help configuring my home theater system and out of four techs I spoke to, none ackowledged hearing anything about audio dropouts over HDMI with surround.  In fact, they kept insisting that I plug the HDMI straight to the TV and I kept having to explain my TV is a stereo device, not a surround device so it's not a good test.  They also immediately started jumping on the bandwagen saying surround sound is out of scope.  I saw a couple of posts about the vip2250 fixing this issue but none of the techs would entertain that idea.

 

Finally I pled my case to a very nice agent in billing who had to go WAY out of her way to get me a vip2250.  Hooked it up and sure enough all audio dropout problems are resolved!

I had a vip1225 hooked up via HDMI to an Onkyo receiver (HT-S8400 to be specific) and I had problems with audio dropouts on surround.  Every few seconds, for a fraction of a second, the audio would drop.  It drove me nuts and I tried everything to fix it.. I tried different (new) HDMI cables, and even a different home theater system!   In the end, I had to keep it on stereo.

 

I went over and over this with UVerse support.  They kept wanting to send me to the paid support line for help configuring my home theater system and out of four techs I spoke to, none ackowledged hearing anything about audio dropouts over HDMI with surround.  In fact, they kept insisting that I plug the HDMI straight to the TV and I kept having to explain my TV is a stereo device, not a surround device so it's not a good test.  They also immediately started jumping on the bandwagen saying surround sound is out of scope.  I saw a couple of posts about the vip2250 fixing this issue but none of the techs would entertain that idea.

 

Finally I pled my case to a very nice agent in billing who had to go WAY out of her way to get me a vip2250.  Hooked it up and sure enough all audio dropout problems are resolved!

Confirmed: vip2250 fixes surround sound audio dropouts!

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Feb 7, 2012 6:03:12 PM
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Traded the lock ups and reboots with HDMI for no digital sound and rgb... Bill
Traded the lock ups and reboots with HDMI for no digital sound and rgb... Bill

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Feb 14, 2012 5:34:20 PM
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I don't get it..  Maybe they have a bad run on some of the vip2250's, but mine has never locked up or rebooted.  I have ethernet from RG to DVR.  Stable as can be with HDMI to Onkyo to Sharp Aquos.

 

Maybe I'm lucky??

I don't get it..  Maybe they have a bad run on some of the vip2250's, but mine has never locked up or rebooted.  I have ethernet from RG to DVR.  Stable as can be with HDMI to Onkyo to Sharp Aquos.

 

Maybe I'm lucky??

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Feb 20, 2012 4:25:32 AM
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Edited by cole_jackson on Feb 20, 2012 at 4:35:47 AM

My VIP 2250 STILL drops audio AND reboots/freezes. Posted on another thread in the forum but still no fixes as far as I know...unless someone else has any advice.

 

CAT5 to main TV (2250 DVR) connected to TV via HDMI

Coax to other TVs (1200 series STB)

New black 2-Wire gateway.

All connections replaced and tested by techs.

My VIP 2250 STILL drops audio AND reboots/freezes. Posted on another thread in the forum but still no fixes as far as I know...unless someone else has any advice.

 

CAT5 to main TV (2250 DVR) connected to TV via HDMI

Coax to other TVs (1200 series STB)

New black 2-Wire gateway.

All connections replaced and tested by techs.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Feb 20, 2012 5:52:55 AM
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Installed the VIP2250 and it's solved my ss audio drops....only had it reboot once, but I'll live with that!   Technician told me I got the last 2250 in stock in Houston.

Installed the VIP2250 and it's solved my ss audio drops....only had it reboot once, but I'll live with that!   Technician told me I got the last 2250 in stock in Houston.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Feb 20, 2012 6:42:01 AM
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I wish that were the case! Is it possible I have a uniquely bad 2250?
I wish that were the case! Is it possible I have a uniquely bad 2250?

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Feb 23, 2012 9:36:47 AM
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I have this sound skip/pause problem on the non-dvr boxes. Does the VIP2250 also solve the problem with these as well?
I have this sound skip/pause problem on the non-dvr boxes. Does the VIP2250 also solve the problem with these as well?

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Feb 23, 2012 11:20:02 AM
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It will not. The work around until the VIP2200 is available would be to use the optical digital output of your VIP1200 for your audio instead of the HDMI output.

It will not. The work around until the VIP2200 is available would be to use the optical digital output of your VIP1200 for your audio instead of the HDMI output.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Feb 23, 2012 1:32:10 PM
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ccwarren51 wrote:
I have this sound skip/pause problem on the non-dvr boxes. Does the VIP2250 also solve the problem with these as well?

No, the 1200 has different innards and your TV2 Client should be at 2.1.2295.10 (Menu > Options > System options).

 

You should be able to use HDMI without much or any issue with an updated VIP 1200, you may have issues using optical audio out with a 1200)

 

You might have problems with various other connections.

 

The replier above me is speculating about as yet unseen piece of hardware.


ccwarren51 wrote:
I have this sound skip/pause problem on the non-dvr boxes. Does the VIP2250 also solve the problem with these as well?

No, the 1200 has different innards and your TV2 Client should be at 2.1.2295.10 (Menu > Options > System options).

 

You should be able to use HDMI without much or any issue with an updated VIP 1200, you may have issues using optical audio out with a 1200)

 

You might have problems with various other connections.

 

The replier above me is speculating about as yet unseen piece of hardware.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Feb 23, 2012 2:12:09 PM
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My experience has been no audio dropouts with the VIP2250. Using HDMI audio with the VIP1200 I had audio dropouts and audio stutter. Using the Digital Optical audio output with the VIP1200 there were no audio dropouts or stutter. Your mileage may vary.

 

The VIP2200 is made by Motorola and is the non-DVR version of the VIP2250. Although AT&T has not yet offered the VIP2200 it uses the same chipset as the VIP2250 and should correct the audio dropout problem for some of us. Until AT&T decides to offer the VIP2200 as it's non-DVR set top box it is certainly worth trying to use the optical digital output on the VIP1200 and see if you get the same work around that I did.

My experience has been no audio dropouts with the VIP2250. Using HDMI audio with the VIP1200 I had audio dropouts and audio stutter. Using the Digital Optical audio output with the VIP1200 there were no audio dropouts or stutter. Your mileage may vary.

 

The VIP2200 is made by Motorola and is the non-DVR version of the VIP2250. Although AT&T has not yet offered the VIP2200 it uses the same chipset as the VIP2250 and should correct the audio dropout problem for some of us. Until AT&T decides to offer the VIP2200 as it's non-DVR set top box it is certainly worth trying to use the optical digital output on the VIP1200 and see if you get the same work around that I did.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Feb 25, 2012 2:10:27 PM
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Called and requested the VIP 2250 to fix my audio dropout issue and also a pop noise when the audio changed from 5.1 to 2.0.  All is good with the new receiver.  No sound issues at all.  Finally after several years of suffering with audio dropout this is resolved.

Called and requested the VIP 2250 to fix my audio dropout issue and also a pop noise when the audio changed from 5.1 to 2.0.  All is good with the new receiver.  No sound issues at all.  Finally after several years of suffering with audio dropout this is resolved.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Feb 25, 2012 5:03:22 PM
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ronaldgfisher wrote:

Called and requested the VIP 2250 to fix my audio dropout issue and also a pop noise when the audio changed from 5.1 to 2.0.  All is good with the new receiver.  No sound issues at all.  Finally after several years of suffering with audio dropout this is resolved.


Congratulations. Smiley Very Happy


ronaldgfisher wrote:

Called and requested the VIP 2250 to fix my audio dropout issue and also a pop noise when the audio changed from 5.1 to 2.0.  All is good with the new receiver.  No sound issues at all.  Finally after several years of suffering with audio dropout this is resolved.


Congratulations. Smiley Very Happy

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Mar 23, 2012 7:36:14 AM
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Thanks for all the info here.  After dealing with this for years I checked back and saw the solution posted here.   Last night, I called, jumped through support hoops, and a technician came out this morning.   He had never heard of the problem, but I put it on a Dolby 2 channel show and showed him.   I have an Onkyo TX-NR509, and it has a info screen where you can actually watch it flicker on the audio feed while the sound drops out.  After showing him that, he agreed to upgrade me to a Cisco ISB7500.  This completely fixed the problem and for the first time in years I actually have surround sound!

 

He did charge me a $50 fee for a DVR upgrade.   Although this is AT&T's fault for the equipment problem, I'm probably not even going to argue it.   For $50 I get increased disk capacity and more importantly, I have surround sound.

Thanks for all the info here.  After dealing with this for years I checked back and saw the solution posted here.   Last night, I called, jumped through support hoops, and a technician came out this morning.   He had never heard of the problem, but I put it on a Dolby 2 channel show and showed him.   I have an Onkyo TX-NR509, and it has a info screen where you can actually watch it flicker on the audio feed while the sound drops out.  After showing him that, he agreed to upgrade me to a Cisco ISB7500.  This completely fixed the problem and for the first time in years I actually have surround sound!

 

He did charge me a $50 fee for a DVR upgrade.   Although this is AT&T's fault for the equipment problem, I'm probably not even going to argue it.   For $50 I get increased disk capacity and more importantly, I have surround sound.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Mar 24, 2012 8:36:18 AM
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I also just received and hooked up my new VIP2250 U-Verse box, and my audio drop problem appears to finally be solved.

I also just received and hooked up my new VIP2250 U-Verse box, and my audio drop problem appears to finally be solved.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Mar 24, 2012 6:17:11 PM
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ACE - Expert

I got a 2250 the other day I look forward to trying out the surround sound.

I got a 2250 the other day I look forward to trying out the surround sound.

*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.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Apr 17, 2012 10:51:55 AM
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VIP2250 fixed all my issues too with an Onkyo HT-RC360.

 

THANK YOU SO MUCH FOR THIS SOLUTION!

VIP2250 fixed all my issues too with an Onkyo HT-RC360.

 

THANK YOU SO MUCH FOR THIS SOLUTION!

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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May 17, 2012 10:41:21 AM
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I have been a uverse subscriber for 2.5 years and experienced audio drop outs from day one. I obtained a Vip2250 about a month ago to resolve an issue unrelated to the audio drop outs. I have a Pioneer VSX-1015TX receiver. I can say now with certainty the new DVR does NOT resolve the audio drop outs for me. No worse...no better!

I have been a uverse subscriber for 2.5 years and experienced audio drop outs from day one. I obtained a Vip2250 about a month ago to resolve an issue unrelated to the audio drop outs. I have a Pioneer VSX-1015TX receiver. I can say now with certainty the new DVR does NOT resolve the audio drop outs for me. No worse...no better!

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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May 17, 2012 10:56:42 AM
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ACE - Expert

I guess it is a good idea to add YRMV about the 2250s.  Bummer.

I guess it is a good idea to add YRMV about the 2250s.  Bummer.

*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.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Jun 3, 2012 9:14:16 AM
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I convinced AT&T to replace my old VIP DVR with the VIP 2250 in an effort to solve the sound skips/dropouts. It did not change anything! But, it is nice to have a higher capacity disk.

 

My setup uses sends the 2250 HDMI signal to my Denon AVR-2112 and from there via HDMI to my LG 55LW5700 TV. The sound output on the 2250 is set to 5.1. The skips do stop if I use simple 2 channel output (which totally defeats the purpose of having a surround sound system).

 

The 2250 runs very hot - I measured the temperature with an IR thermometer on the underside at 127°F. Even off, this thing runs hot!

 

I convinced AT&T to replace my old VIP DVR with the VIP 2250 in an effort to solve the sound skips/dropouts. It did not change anything! But, it is nice to have a higher capacity disk.

 

My setup uses sends the 2250 HDMI signal to my Denon AVR-2112 and from there via HDMI to my LG 55LW5700 TV. The sound output on the 2250 is set to 5.1. The skips do stop if I use simple 2 channel output (which totally defeats the purpose of having a surround sound system).

 

The 2250 runs very hot - I measured the temperature with an IR thermometer on the underside at 127°F. Even off, this thing runs hot!

 

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Sep 4, 2012 7:13:17 AM
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I've been experiencing similar issues to what's been described in this thread with my Onkyo HT-S3500 with audio dropouts on *some* U Verse stations and dvr recordings. When I change it to stereo mode the problem goes away, but obviously at the expense of surround sound. We only have two tv's and our other set (non-surround sound) has the VIP2250 box connected to it.

 

Could a solution to my issues be as simple as switching the boxes between our two tv's?

 

 

I've been experiencing similar issues to what's been described in this thread with my Onkyo HT-S3500 with audio dropouts on *some* U Verse stations and dvr recordings. When I change it to stereo mode the problem goes away, but obviously at the expense of surround sound. We only have two tv's and our other set (non-surround sound) has the VIP2250 box connected to it.

 

Could a solution to my issues be as simple as switching the boxes between our two tv's?

 

 

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Sep 4, 2012 7:41:08 AM
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ACE - Expert

Yes, it is certainly worth a try.

 

Yes, it is certainly worth a try.

 

*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.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Sep 4, 2012 3:09:09 PM
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Edited by infinity1976 on Sep 4, 2012 at 3:31:11 PM

I can confirm this as well.  I swapped out my VIP1225 for a VIP2250 and the audio dropout with DD 2.0 issues went away.

 

This is with an Onkyo NR-818

 

 

I should also note, it's a pain to get a 2250 at the moment.  CS does not have an option to ship you a 2250, they have an option to ship either a low or high capacity DVR.  A high capacity can get you a 1225 or a 2250 (or cisco box depending on your market).  You will need to explain your situation well to someone on the phone.  It took me 3 calls and nearly 3 hours of waiting while each rep tried their best.  Every CS was very helpful but they have their hands tied a bit in this situation.   When you ask for a specific model # their ordering software isn't setup to handle requests like this.

 

Best of luck to anyone trying to fix their drop out issues, I didn't have an issue until I changed receivers.  My VIP1225 worked fine with the Pioneer VSX-33 I had, but it started having drop outs when I changed to the Onkyo NR-818.  Luckily I found this post and stuck with it in tech support...

I can confirm this as well.  I swapped out my VIP1225 for a VIP2250 and the audio dropout with DD 2.0 issues went away.

 

This is with an Onkyo NR-818

 

 

I should also note, it's a pain to get a 2250 at the moment.  CS does not have an option to ship you a 2250, they have an option to ship either a low or high capacity DVR.  A high capacity can get you a 1225 or a 2250 (or cisco box depending on your market).  You will need to explain your situation well to someone on the phone.  It took me 3 calls and nearly 3 hours of waiting while each rep tried their best.  Every CS was very helpful but they have their hands tied a bit in this situation.   When you ask for a specific model # their ordering software isn't setup to handle requests like this.

 

Best of luck to anyone trying to fix their drop out issues, I didn't have an issue until I changed receivers.  My VIP1225 worked fine with the Pioneer VSX-33 I had, but it started having drop outs when I changed to the Onkyo NR-818.  Luckily I found this post and stuck with it in tech support...

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Sep 4, 2012 5:46:00 PM
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Glad to hear it's working for you and thanks for posting.
Glad to hear it's working for you and thanks for posting.
*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.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Sep 5, 2012 4:26:48 AM
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I did switch my two boxes last eve and, lo and behold, with the vip2250 connected to my Onkyo receiver the sound dropping issue has been resolved. Thanks for the advice, all!

I did switch my two boxes last eve and, lo and behold, with the vip2250 connected to my Onkyo receiver the sound dropping issue has been resolved. Thanks for the advice, all!

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Sep 5, 2012 5:36:42 AM
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ACE - Expert

snoopy4331 wrote:

I did switch my two boxes last eve and, lo and behold, with the vip2250 connected to my Onkyo receiver the sound dropping issue has been resolved. Thanks for the advice, all!


That's great.  Thanks for letting everyone know!

 


snoopy4331 wrote:

I did switch my two boxes last eve and, lo and behold, with the vip2250 connected to my Onkyo receiver the sound dropping issue has been resolved. Thanks for the advice, all!


That's great.  Thanks for letting everyone know!

 

*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.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Sep 16, 2012 9:03:41 AM
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We also have the surround sound audio drop out problem.  We have to switch to "stereo" unless we're watching a DVD.  We recently had the surround sound installed and the group that did it for us said they have many problems with AT&T customers and that we should ask for an upgraded receiver.

 

We have the old silver Cisco 4320 receiver.  I called AT&T to ask for the better receiver, but they wanted to send me to a technician for my audio problem.  What do I ask for to get this upgraded receiver without the runaround?  I'm not using the right words...

 

 

 

We also have the surround sound audio drop out problem.  We have to switch to "stereo" unless we're watching a DVD.  We recently had the surround sound installed and the group that did it for us said they have many problems with AT&T customers and that we should ask for an upgraded receiver.

 

We have the old silver Cisco 4320 receiver.  I called AT&T to ask for the better receiver, but they wanted to send me to a technician for my audio problem.  What do I ask for to get this upgraded receiver without the runaround?  I'm not using the right words...

 

 

 

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Sep 16, 2012 2:20:02 PM
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ACE - Expert
Sending a technician may be your best shot to get a new box, though... if he has the newer type on his truck.
Sending a technician may be your best shot to get a new box, though... if he has the newer type on his truck.
*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.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Oct 16, 2012 5:05:56 PM
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Edited by infinity1976 on Oct 16, 2012 at 5:22:02 PM

I wanted to share some more experiences with the VIP2250.

 

It has some major video bugs.  They are doing something really funky with the lower gradients.  If you display a 16-50 gray scale map on the VT2250 it shows tints of red as well it's completely clipping 17-18!    (you can display pictures via image share)

 

Not to mention the grayscale is dynamically modified!  If I leave the a black clipping image up 16-30, the grayscale actually jumps around!  I see it remapping some of the gradients!  It does this with the video information that's still playing in the background.

 

 

IMO the VIP2250 is a huge mess video wise.  It may improve audio but the video is not good.  When I bring my normal non DVR box to this same TV none of these issues are present.

 

You can see the flaw im talking about simply in the U-verse screen where it says "press OK to watch TV".  Watch the background on a 2250, notice how it transaitions the blobs around and watch it on another box.  

 

1.   it shouldn't be clipping gradients 17,18,19

2.  It shoiuld not be remapping the grayscale! 

3.  There should be NO color in values 20-25.  They are red tinged.  This is bad!

 

All of these issues go away when I use my non DVR on the same TV.  This is also why people see more compression artifacts on the VIP2250, the gamma is lower with the video driver it's using.  And when that dynamic change happens the gamma gets even lower.

 

Also if you find yourself thinking there is a bit of black crush (lack of detail in dark areas) with uverse and you have a 2250, it's more than likely the DVR.  You can't calibrate the DVR correctly, it is clipping some dark details and doing bizzare stuff with the gamma.

 

p.s.

 

TV is calibrated with a photospectrometer (i1 pro), I dialed it in which is when I started to notice this stuff.

 

So in it's current status... if you switch to a VIP2250 to get fixed audio , but you'll end up with poorer quality video.  I verified this on multiple TVs swapping the boxes around.  So frustrating...   

 

So now I want my old DVR back unless someone can tell me there is a fix coming for the video driver in the VT2250. 

 

Do they not have Q&A testing?  these boxes should meet some very basic guidelines displaying basic test patterns before the software is pushed out and released.  I'm sure most people don't know to check for these things, but I bet people do notice these problems.

I wanted to share some more experiences with the VIP2250.

 

It has some major video bugs.  They are doing something really funky with the lower gradients.  If you display a 16-50 gray scale map on the VT2250 it shows tints of red as well it's completely clipping 17-18!    (you can display pictures via image share)

 

Not to mention the grayscale is dynamically modified!  If I leave the a black clipping image up 16-30, the grayscale actually jumps around!  I see it remapping some of the gradients!  It does this with the video information that's still playing in the background.

 

 

IMO the VIP2250 is a huge mess video wise.  It may improve audio but the video is not good.  When I bring my normal non DVR box to this same TV none of these issues are present.

 

You can see the flaw im talking about simply in the U-verse screen where it says "press OK to watch TV".  Watch the background on a 2250, notice how it transaitions the blobs around and watch it on another box.  

 

1.   it shouldn't be clipping gradients 17,18,19

2.  It shoiuld not be remapping the grayscale! 

3.  There should be NO color in values 20-25.  They are red tinged.  This is bad!

 

All of these issues go away when I use my non DVR on the same TV.  This is also why people see more compression artifacts on the VIP2250, the gamma is lower with the video driver it's using.  And when that dynamic change happens the gamma gets even lower.

 

Also if you find yourself thinking there is a bit of black crush (lack of detail in dark areas) with uverse and you have a 2250, it's more than likely the DVR.  You can't calibrate the DVR correctly, it is clipping some dark details and doing bizzare stuff with the gamma.

 

p.s.

 

TV is calibrated with a photospectrometer (i1 pro), I dialed it in which is when I started to notice this stuff.

 

So in it's current status... if you switch to a VIP2250 to get fixed audio , but you'll end up with poorer quality video.  I verified this on multiple TVs swapping the boxes around.  So frustrating...   

 

So now I want my old DVR back unless someone can tell me there is a fix coming for the video driver in the VT2250. 

 

Do they not have Q&A testing?  these boxes should meet some very basic guidelines displaying basic test patterns before the software is pushed out and released.  I'm sure most people don't know to check for these things, but I bet people do notice these problems.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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A few questions:

1. Have you compared a VIP1225 or VIP1216 next to it to see side-by-side differences?
2. Are you sure your TV is not doing dynamic contrast or some other setting?
3. Have you compared HDMI vs. Component outputs to see if the problems are isolated to only one particular connection?
4. Are you aware that nearly all modern TVs retain image settings (contrast, brightness, gamma, color management, etc.) on a per-input basis? e.g. If you've calibrated your TV using your Blu-Ray player on HDMI 1 but the U-Verse receiver is connected to HDMI 2, you have to copy the settings from HDMI 1 to HDMI 2 to get the calibration correct on that input?

A few questions:

1. Have you compared a VIP1225 or VIP1216 next to it to see side-by-side differences?
2. Are you sure your TV is not doing dynamic contrast or some other setting?
3. Have you compared HDMI vs. Component outputs to see if the problems are isolated to only one particular connection?
4. Are you aware that nearly all modern TVs retain image settings (contrast, brightness, gamma, color management, etc.) on a per-input basis? e.g. If you've calibrated your TV using your Blu-Ray player on HDMI 1 but the U-Verse receiver is connected to HDMI 2, you have to copy the settings from HDMI 1 to HDMI 2 to get the calibration correct on that input?

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Edited by infinity1976 on Oct 16, 2012 at 5:55:42 PM

SomeJoe7777 wrote:
A few questions:

1. Have you compared a VIP1225 or VIP1216 next to it to see side-by-side differences?
2. Are you sure your TV is not doing dynamic contrast or some other setting?
3. Have you compared HDMI vs. Component outputs to see if the problems are isolated to only one particular connection?
4. Are you aware that nearly all modern TVs retain image settings (contrast, brightness, gamma, color management, etc.) on a per-input basis? e.g. If you've calibrated your TV using your Blu-Ray player on HDMI 1 but the U-Verse receiver is connected to HDMI 2, you have to copy the settings from HDMI 1 to HDMI 2 to get the calibration correct on that input?


1.  Yes, difference is substantial.    They don't need to be side by side to see some of the quirks.  Easily seen with same TVs and settings.  In fact anyone who's very famaliar with the blue stand by screen (press "OK" to watch tv) and how smooth the transitions should be in the blue areas that move around will see the difference right away in the 2250.  It's not smooth transitioning it's jerky and messy (gradients), you can see the gradients popping around.

 

2.  No, it's off.  It would be the AGC control on my VT50, and it's at 0.  The dynamic issue I bring up is I assume in the HDMI video driver in the STB or possibly the H.264 decoder?.  If you leave a HD program going on something like HBO, then bring up media sharing and display a photo (in this case a black clipping photo).  you can actually see the STB remap the gradients based on the video stream it's processing in the background.    So in this case I have a static picture up and the grayscale dynamically changes.  Are you famaliar with a black clipping slide use to set brightness?   If I tune to a channel that doesn't have video before I bring up the "media share" the image will never change, it's stable.  This is when I realized there's some connection to the STB processing the video and the grayscale popping around.

 

3.  I have tried 2 brand new 2250 boxes and only HDMI, both have done it.   I'll try component when I get some time, just to debug...

 

4.  sure, i've been calibrating TVs for many years now.  In this case I'm calibrating the ISF modes for the input in question via remote app called controlcal.   My experience level here is probably way above average.

 

 

The redish tinge in the dark grays (near black) and the clipped blacks are really annoying, that just shouldn't be.   The 2250 has a low gamme AND black crush.  Terrible combination.  The low gamma make sthe compression artifacts pop out even more and the clipped black make things look crushed in dark scenes.

 

And yes, I fully calibrated the grayscale using 10pt controls using a photospectrometer  Smiley Wink  My other STB box shows NO color in the bars unlike the 2250 (on the same TV and input/settings).

 

thanks for the reply Smiley Happy

 


SomeJoe7777 wrote:
A few questions:

1. Have you compared a VIP1225 or VIP1216 next to it to see side-by-side differences?
2. Are you sure your TV is not doing dynamic contrast or some other setting?
3. Have you compared HDMI vs. Component outputs to see if the problems are isolated to only one particular connection?
4. Are you aware that nearly all modern TVs retain image settings (contrast, brightness, gamma, color management, etc.) on a per-input basis? e.g. If you've calibrated your TV using your Blu-Ray player on HDMI 1 but the U-Verse receiver is connected to HDMI 2, you have to copy the settings from HDMI 1 to HDMI 2 to get the calibration correct on that input?


1.  Yes, difference is substantial.    They don't need to be side by side to see some of the quirks.  Easily seen with same TVs and settings.  In fact anyone who's very famaliar with the blue stand by screen (press "OK" to watch tv) and how smooth the transitions should be in the blue areas that move around will see the difference right away in the 2250.  It's not smooth transitioning it's jerky and messy (gradients), you can see the gradients popping around.

 

2.  No, it's off.  It would be the AGC control on my VT50, and it's at 0.  The dynamic issue I bring up is I assume in the HDMI video driver in the STB or possibly the H.264 decoder?.  If you leave a HD program going on something like HBO, then bring up media sharing and display a photo (in this case a black clipping photo).  you can actually see the STB remap the gradients based on the video stream it's processing in the background.    So in this case I have a static picture up and the grayscale dynamically changes.  Are you famaliar with a black clipping slide use to set brightness?   If I tune to a channel that doesn't have video before I bring up the "media share" the image will never change, it's stable.  This is when I realized there's some connection to the STB processing the video and the grayscale popping around.

 

3.  I have tried 2 brand new 2250 boxes and only HDMI, both have done it.   I'll try component when I get some time, just to debug...

 

4.  sure, i've been calibrating TVs for many years now.  In this case I'm calibrating the ISF modes for the input in question via remote app called controlcal.   My experience level here is probably way above average.

 

 

The redish tinge in the dark grays (near black) and the clipped blacks are really annoying, that just shouldn't be.   The 2250 has a low gamme AND black crush.  Terrible combination.  The low gamma make sthe compression artifacts pop out even more and the clipped black make things look crushed in dark scenes.

 

And yes, I fully calibrated the grayscale using 10pt controls using a photospectrometer  Smiley Wink  My other STB box shows NO color in the bars unlike the 2250 (on the same TV and input/settings).

 

thanks for the reply Smiley Happy

 

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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Interesting. It would seem that the VIP2250 has a fairly serious flaw in the video processing if it's doing what you're saying.

There are some unanswered questions, though. Since we can primarily only test the STBs using images from Media Share like you're doing, is this a bug in all video processing or just in the Media Share portion? There's not a good way to test, unless you might happen to catch the HDNet test patterns that they occasionally broadcast.

The VIP2250 does use a different CPU/H.264 decoder (Broadcom vs. Sigma Designs) and a different HDMI chip than the 1st generation STB units (VIP 1200, 1216, 1225). It would be interesting to determine whether these faults you've observed reside in hardware or in software, and in what stage of the video processing.
Interesting. It would seem that the VIP2250 has a fairly serious flaw in the video processing if it's doing what you're saying.

There are some unanswered questions, though. Since we can primarily only test the STBs using images from Media Share like you're doing, is this a bug in all video processing or just in the Media Share portion? There's not a good way to test, unless you might happen to catch the HDNet test patterns that they occasionally broadcast.

The VIP2250 does use a different CPU/H.264 decoder (Broadcom vs. Sigma Designs) and a different HDMI chip than the 1st generation STB units (VIP 1200, 1216, 1225). It would be interesting to determine whether these faults you've observed reside in hardware or in software, and in what stage of the video processing.

Re: Confirmed: vip2250 fixes surround sound audio dropouts!

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