Originally Posted by D Bone
Not entirely true. On some units (like the x3500) when you have "Video Conversion" set to ON, and others (like my x2600) when you have "Video Mode" set to any setting except Bypass, then there is some video processing happening in order to overlay the info, volume and settings screens.
I have my x2600 Video Mode setting set to Bypass which removes 100% of all video processing and also eliminates any lipsync issues from any connected source. I know you were talking about color temp and whatnot, but I just thought I would clarify that there is still some video processing going on when using Video Conversion or Video Mode.
. I know what you meant, but I also know what I meant
. By Picture Processing
, I was talking about the "colour temp and whatnot" side of it
. This is what is definitely not happening when you turn all that crap off, to reassure the OP.
You say you've removed 100% of all video
processing. This is going to be semantics I agree, but I will continue to separate those two terms if only to make this post of mine clearer as I try to step carefully through this.
"Removing all processing" is simply not possible with HDMI, if you are passing a signal through an AVR and onwards to a TV. There is no longer the pure electrical passthrough that happened a decade ago with AVRs. This is a fact. It's a common misconception with HDMI these days that you can "pass through", but you can't! An HDMI port is either decoding or transmitting (it can't do both), so as long as picture and sound are encoded on one cable, the AVR has to decode the stream coming in from the "input" HDMI socket, separate the audio, and then repackage the picture info back up for transmitting to the TV out of the "output" HDMI socket in a completely new stream of data. That's what could
very easily be called "video processing"!
If any pic info can't be decoded, then that info is discarded. This is why Denon needed to issue firmware updates to add support for HLG "pass-through" and dolby vision "pass through". I use them in quotes on purpose. Each and every time something new is present in the signal, it needs to be explicitly added to the "decode-repackage-transmit" routines.
"Pass through" is a misnomer, because there is no bypass: only "decode-repackage-transmit" - whether the AVR adds an on-screen menu, or not. So you have some "video processing", whether you like it or not, regardless of what wording the on-screen menu is using. "Bypass" is the traditional term people (including me!) used to mean "don't touch it at all" - but see above. It's definitely going to touch it - a LOT - even with "bypass mode".
What this means is, yes to get the overlay for volume, you must enable "Video Conversion" (and I of course turn i/p scaler off). I consider, and yes this is an assumption, that the AVR won't change the video until and unless I press a button which puts an overlay onto the screen. Each and every pixel will be the same colour at a digital HDMI level that it should be, the vast majority of the time (when there's no overlay). I use it for convenience, and whilst I haven't measured the digital pixel levels coming out in the HDMI stream with no menu showing, with "Video Conversion" on/off - I don't have the equipment to do this - nobody has ever accused Denon of changing any pixel [when there's no menu overlaid and "i/p scaler" is disabled]
. If they have, I would like them to back it up with evidence and we could all be informed.
You make an excellent point about lip sync, and for some people with some equipment, the "bypass" mode might do something at a low level that merely turning the I/P scaler off does not do. Regardless, the bottom line is that it's still definitely doing "decode-repackage-transmit" processing to the signal. We trust that all the pixels keep their original colours, unless there is an overlay present at that exact moment.
That screenshot you posted - where the AVR examines the content to decide whether it's a Game, or a Movie. It's looking for a particular flag in the HDMI bitstream which may or may not be set. The AVI InfoFrame data in this case. The source might not even set it! With my x4200 I have no "Bypass" option, I can only set "Auto". Perhaps for me "Game" may do "less" processing*, but I have no evidence for that and see above, it's not set to do any anyway
*other than "decode-repackage-transmit", argh, so difficult to write this post clearly