AVR upconversion and cable box 4:3 Override Question - Canadian TV, Computing and Home Theatre Forums

ericmho · 2009-11-01, 11:31 PM

Hi I've got a AVR which can do video upconversion. Does it mean that it will upconvert the cabox box SD programs to 1080i format? If it does, if I set up my cable box 4:3 override to 480P, who is doing the conversion? What about setting 4:3 to none? I want to get the best picture quality for SD channel and want to know the proper setting of the cable box 4:3 override. Thanks.

57 · 2009-11-01, 11:59 PM

See the following FAQ on upconversion. It's usually best to have the best device do the conversion, which is usually the TV

http://www.digitalhome.ca/forum/showthread.php?t=87543

However, in your case your TV doesn't seem to accept 480i (based on your other thread) via HDMI as outlined in the following FAQ, so you may be best setting the STB to 1080i only, turning the 4:3 override to off.

http://www.digitalhome.ca/forum/showthread.php?t=71112 Item 23

Check out the following Useful post, where these items were addressed, along with other items you're likely to encounter:

http://www.digitalhome.ca/forum/showthread.php?t=57741

And

http://www.digitalhome.ca/forum/showthread.php?t=21274 Motorola Tips.

ericmho · 2009-11-02, 09:26 AM

Hi 57, thank you for the response. You indicated setting the STB to 1080i only, turning the 4:3 override to off. Does this mean my AVR box will do upconversion now with this setting? Thanks.

57 · 2009-11-02, 09:36 AM

Um, no, the STB is doing the upconversion of 480i and 720P signals to 1080i, but since the TV will not accept 480i via HDMI and since the STB (if I recall you have Shaw Motorola) will not allow output of 720P and 1080i (passthrough), it shouldn't be a problem doing the conversion in the STB.

ericmho · 2009-11-02, 11:57 AM

Sorry 57, I'm not quite understand your statement: since the STB (if I recall you have Shaw Motorola) will not allow output of 720P and 1080i (passthrough), it shouldn't be a problem doing the conversion in the STB.
The conversion in STB is to 1080i. Right? But then you mentioned the STB does not allow output of 1080i (passthrough). So what is being output from STB? Thanks.

2009-11-01, 11:31 PM	#1
ericmho Join Date: Jul 2005 Posts: 51	AVR upconversion and cable box 4:3 Override Question Hi I've got a AVR which can do video upconversion. Does it mean that it will upconvert the cabox box SD programs to 1080i format? If it does, if I set up my cable box 4:3 override to 480P, who is doing the conversion? What about setting 4:3 to none? I want to get the best picture quality for SD channel and want to know the proper setting of the cable box 4:3 override. Thanks.

2009-11-01, 11:59 PM	#2
57 Moderator Join Date: May 2002 Location: Toronto, Rogers, 8300HD, eHDD, Panasonic TCP65S1, Denon AVR4310Ci; 8300HD, eHDD & Sony KDL40W3000 Posts: 50,293	See the following FAQ on upconversion. It's usually best to have the best device do the conversion, which is usually the TV http://www.digitalhome.ca/forum/showthread.php?t=87543 However, in your case your TV doesn't seem to accept 480i (based on your other thread) via HDMI as outlined in the following FAQ, so you may be best setting the STB to 1080i only, turning the 4:3 override to off. http://www.digitalhome.ca/forum/showthread.php?t=71112 Item 23 Check out the following Useful post, where these items were addressed, along with other items you're likely to encounter: http://www.digitalhome.ca/forum/showthread.php?t=57741 And http://www.digitalhome.ca/forum/showthread.php?t=21274 Motorola Tips. __________________ 57's Home Theatre (Latest equipment & photos) 57's Optimization Services (Home Theatre Optimization)

2009-11-02, 09:36 AM	#4
57 Moderator Join Date: May 2002 Location: Toronto, Rogers, 8300HD, eHDD, Panasonic TCP65S1, Denon AVR4310Ci; 8300HD, eHDD & Sony KDL40W3000 Posts: 50,293	Um, no, the STB is doing the upconversion of 480i and 720P signals to 1080i, but since the TV will not accept 480i via HDMI and since the STB (if I recall you have Shaw Motorola) will not allow output of 720P and 1080i (passthrough), it shouldn't be a problem doing the conversion in the STB. __________________ 57's Home Theatre (Latest equipment & photos) 57's Optimization Services (Home Theatre Optimization)

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2009-11-02, 09:26 AM	#3
ericmho Join Date: Jul 2005 Posts: 51	Hi 57, thank you for the response. You indicated setting the STB to 1080i only, turning the 4:3 override to off. Does this mean my AVR box will do upconversion now with this setting? Thanks.

2009-11-02, 11:57 AM	#5
ericmho Join Date: Jul 2005 Posts: 51	Sorry 57, I'm not quite understand your statement: since the STB (if I recall you have Shaw Motorola) will not allow output of 720P and 1080i (passthrough), it shouldn't be a problem doing the conversion in the STB. The conversion in STB is to 1080i. Right? But then you mentioned the STB does not allow output of 1080i (passthrough). So what is being output from STB? Thanks.