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720i problem

Gromulin
11-13-2006, 11:24 AM
Hi all, new to this forum and hi-def in general. Here's the problem:

I just upgraded my DirecTV service to HD this weekend, with the HD DVR, and once I got the inputs figured out on my Mitsubishi WS-65819 RPTV all was well until I happened upon ESPN-2 which broadcasts in 720i. Thats when I found that my Mitsubishi no-hablas 720i. Major screen-scramble on a 720i signal.

I have the DVR set to the Native format, which seems like the right thing to do for the majority of our viewing, so that my wife wont have to select the format for each channel, and I understand that by making the DVR non-native I would not have this problem (right?). Is there any way to force the 720i channels to 480i? A magic box of some kind?

Your learned input is greatly appreciated.:bowdown:

Bigloww
11-13-2006, 11:41 AM
No one (to my knowledge) broadcasts in 720i, so you must mean 720p. Allot of stations broadcast in 720p , so I am not sure why you have a problem with ESPN2. It should upconvert it to 1080i like all the other 720p stations. Do you have a problem with any other station??

Gromulin
11-13-2006, 11:47 AM
hmmm, I'm at work, so can't verify, but I remember from the connection panel on the Mitsu, that it listed 480i, 480P and 1080i as the accepted formats for the DTV inputs. This RPTV is a 2002 model.

I'll have to verify which channels had the problems when I gt home tonight. It's definitly a 720 vs 480/1080 problem. The whole screen scrambles with diagonal lines as soon as I hit a channel thats in 720.

Bigloww
11-13-2006, 12:04 PM
Yeap from what I seen those are it too. But 1080i is it's native resolution. It should be able to convert a 720p signal to 1080i and display it. Your HD STB as well. My plasma native resolution is 720p ,but will display 1080i by scaling to 720p. Yeah , verify how the other 720p channels like FOX or ABC for example. ESPN-HD MNF will be 720p tonight, check that out. It is probably a STB config issue.

Gromulin
11-13-2006, 12:35 PM
It should be able to convert a 720p signal to 1080i and display it. Your HD STB as well. .

Ok, you lost me at "It":D What does the upconversion? The TV? The DVR?

It is probably a STB config issue.

Is STB Satellite Box?

If you are speaking of the DVR doing conversions, then yes, if I set it to non-native display, I can manually select different display resolutions. Is there any way to insert a box between the DVR and the TV to only up (or down) convert the 720 signals to 480/1080?

I could be totally lost here...

Bigloww
11-13-2006, 02:09 PM
I assume you have the HR20 from DTV. I have Dish and the Vip 622 is a bit different. If you post this in Direct TV, you will get better responses. STB is the Sat box or Set Top Box. And sorry for confusing you with the Tech terms.
Bottom line it should work with either 1080i or 720p. If ESPN-HD works and ESPN2-HD does not, that is strange since they are both 720p. If you are just talking about regular ESPN2, that is 480i and a different story. Bottom line there is no 720i broadcasts, so if it shows that, something is f'd up.

With the HR20 you have the option to choose an all-native output mode, which delivers high-def channels in their original resolutions (720p for ABC, Fox, and ESPN-HD/ESPN2-HD; 1080i for the rest). It sounds like this is what you are using.

You don't or should not need any additional equipment or connection in between. The STB should handle it.

rbinck
11-13-2006, 04:45 PM
Your HD DVR can be set to output 1080i. I don't know your model number, but the TiVos have a button on the front that toggles through the different output formats. Your's must be set to output the format received rather than fixed output to 1080i. If this is not enough help, give us your DVR model number and we can help further.

Gromulin
11-13-2006, 08:43 PM
It was 720p...

I forced the DVR to output everything in 1080i, and everything seems well. Thanks for the advice!

Woomfaw
11-22-2006, 02:02 PM
It seems that I am having the same problem but the same fix does not work.

I have the same TV Mitsubishi WS-65819, and I believe the same receiver DirecTV HD-DVR HR10-250. I have the Component cables going into the 1080i inputs on the TV but no matter what I am watching if I force the receiver to send out 1080i I get a scrambled picture. I called Mitsu today and they are trying to sell me a promise module for 400 plus install. I dont like the idea of having to buy a new part to get my TV to display an image that it should be capable of. The only signal that I seem to be able to watch is 480p. someone please help.

Gromulin
11-22-2006, 02:11 PM
Woomfaw,
Make sure your component cables are going to the DTV input on the right hand side..I originally had mine to one of the component inputs on the left, until I saw that those only support 480i or p. Only the DTV input supports 1080i, FWIW.

I had to do some fiddling with the setup menu also to recognize the DTV input. I think it was turned off by default, or one of my previous excursions into screwing up the settings on my TV.

Woomfaw
11-22-2006, 03:50 PM
Yeah i am hooked up to the DTV inputs ... I noticed that too ... and have the DTV turned on and set to YPbPr ... I took the HD DVR over to a friends house and it works on his TV just fine in 1080i.

thanks again for any help

BrianO
11-22-2006, 11:30 PM
No one (to my knowledge) broadcasts in 720i, so you must mean 720p.

Correct. There is no such thing as 720i. To be compatible MPEG compression, the number of scan lines must be divisible by 16 for progressive scan or 32 for interlaced scan. (They use a trick to make 1080i/p compatible with MPEG).