I stand corrected because different AVRs either
have or
do not have video upscaling on its HDMI input. I am aware of that. So this depends on... different AVR brands and models... budget or high-end AVRs... and older or latest models. For example, it is probably true for the higher-end Yamaha Aventage A3010. I cannot check each and every different models and brands, old or latest models included.
Because Smileguy only mentioned that he used a Yamaha AVR without stating the model, I think readers here need better clarification that not all AVRs do upscaling from HDMI connection so this was why I posted my previous explanations here... and this was why I requested Smileguy to retest and check his HDTV display Info as I had described and outlined earlier. I did not deny that better upscaling capability will give some measure of picture quality improvement... and by how much will depend on each different AVRs. I have always accepted that Smileguy have the right to give his opinions on whether his AVR improved the PQ due to video upscaling. Since I don't know which Yamaha model he used, my earliear explanation was merely to make sure that his AVR have or don't have HDMI upscaling from HDMI Input. This was why I mentioned the tests from my Yamaha RXV-1900 and RXV-3900.
I do not dispute and will not disagree with Smileguy's opinion that his Yamaha AVR "upscaling" improve the PQ of Byond
a lot BUT this is not correct IF his AVR do NOT upscale from HDMI input, and HDMI connections were used. My earler suggestion was to make sure "HDMI to HDMI upscaling" is available for his Yamaha AVR in order to be more accurate before giving his respected opinions on PQ.
By the way, better video upscaling for better PQ will depend on the quality of the AVR Video Scalar chip used, so, as I have mentioned before, will improve the PQ of Byond (for HDMI connection) but how much improvement will ultimately depend on which Video Scalar chip in the AVR. Hehe... which Video Scalar chip is better... for my opinion only... I have to see with my own eyes to compare.
Ultimately, its the
AVR Video Scalar Chip that determines the improvement of PQ from Byond because that scalar chip handles the upscaling, resolution interpolation, etc. Therefore, its not correct to only mention that "upscaling" improved the PQ, it should be corrected to mention that its the combination of the AVR Video Scalar and Video Processor Chips which improved the PQ and which I, of course, do agree.
Appreciated your feedback and correction.
EDIT : Made a mistake again... I did a quick google check. There are Video Scalar Chips such as the Silicon Image Products - ABT1015 Video Scaling Chip which handles upscaling. So better AVR Video Scalar Chip do affect the PQ too. I corrected parts of my above reply to mention the Scalar chip. One thing I am not sure is whether its possible for the Video Processor Chip to handle the upscaling if no Video Scalar Chip is used.┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬┴┬LATER ADDITION 09-07-2012I am continuing my comments on AVR video processing because its related to improving the Byond PQ. My apologies if I may seem to be out-of-topic here.Phew ! Its seems I have forgotten about my Yamaha RX-V3900 AVR specifications because I have been using it for so long. This is always connected to a blu-ray player which don't need any HDMI upscaling, hehe.
Getting too long so the rest of my explanations inside spoilers...» Click to show Spoiler - click again to hide... «
I rechecked the RX-V3900 Manual which states that it DO have upscaling from HDMI input. Earlier I only tested with my RX-V1900, did not test with RX-V3900 and put the two models together and wrongly "assumed" that both models cannot upscale from HDMI input.
Sorry for that. So I also re-tested the RX-V3900 and yes indeed that it can upscale 720p videos to 1080p from HDMI Input !
Here's the new correction...
Yamaha RX-V1900 ... No upscaling from HDMI Input, Only upscale from analog RCA (yellow) and Component Video (Red, gren, blue) to HDMI Output as 1080p
Yamaha RX-V3900 ... Yes, upscaling from HDMI Input (such 576p, 720p), analog RCA (yellow) and Component Video (Red, gren, blue) to HDMI Output as 1080p
I could find what Anchor Bay Video Processor/Scalar Chip Models used for the two AVR Manuals. So looked further from google search.
According to this link... "
http://en.wikipedia.org/wiki/Video_scaler", it states that "most Video Scalers are often combined with other video processing devices or algorithms to create a video processor that improves the apparent definition of video signals". The video processing chip used in AVRs CAN also process video scaling processes.
As I mentioned my earlier edit, about Silicon Image which ABT1015 Video Scaling Chip is actually the Anchor Bay ABT1015 chip !! According to the Wikipedia link above, it does mentioned that Silicon Image purchased Anchor Bay on 10 February 2011. Earlier, I did NOT know that !
The difference is that for RX-V1900 the Video Processor/Scaler chip cannot upscale from HDMI Input... and the RX-V3900 different chip can upscale from HDMI Input.
I am able to find from various sources but I am only providing just 2 links below about the Anchor Bay chips in the Yamaha AVRs...
Yamaha RX-V1900... Anchor Bay Anchor Bay VRS Technology (using ABT 1010 chip)
Link... "
http://avreceivers.productwiki.com/yamaha-rx-v1900/"
Yamaha RX-V3900... Anchor Bay Anchor Bay VRS Technology + PReP (using ABT 2010 chip)
Link... "
http://avreceivers.productwiki.com/yamaha-rx-v3900/"
That means most latest Video Processor Chips also handle video scaling too. Only difference is that some chips handle video
upscaling from RCA/Component Video to HDMI Out and higher-end ones handle video
upscaling for ALL inputs.
I repeat... if Smileguy Yamaha AVR video processor chip cannot handle upscaling from HDMI Input, then he cannot use HDMI to HDMI to test upscaling.
Hehe... sometimes when I try to help others with what I know, I also learn from my mistakes by doing more digging for info and "research".

Thanks for info James,learnt new things ! I am not a AV genious,all I wl say The SD PQ especially on both Toshiba Regza LCD and Panasonic PLasma 50VT thru my yamaha AVR RXV 671 is much improved and great and when I removed the LCD to my room without AVR I see the true Assstro SD PQ!Maybe for some it could be a matter of taste but I feel my AVR has done a lot! To me for asstro SD besides old CRT Plasma is the best!