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Does HDMI effect blacks on HD-A2?

post #1 of 5
Thread Starter 
Since I can't ask this on the HD-DVD forum, I'll ask it here: I have my Toshiba HD-A2 is connected via HDMI and when the player turns on, the screen turns REALLY black. Is the same true when you connect the A2 through component cables? Or is dark level different between connections?
post #2 of 5
What display? Connecting to a DVI input (or some displays with HDMI input) the Tosh players will output PC RGB levels which usually result in a darker image if the the input was previously setup with a device that output (correct) video levels. Search the HD-DVD player forum for BTB or PC RGB or black crush.

larry
post #3 of 5
Thread Starter 
It's a Sony direct-view XBR970. The rest of what you wrote is a little above my technical expertise.
post #4 of 5
Ok. When ever you connect a different player to a display or even the same player via 2 different connection types you should (re)calibrate the TV to match the input of the player. There's a whole forum here dedicated to display calibration and there are discs like Digital Video Essentials that explain the basics of display (video) and HT audio calibration. Even the basic calibrations are essential for you to get the best (and proper) picture displayed. Or you can have a professional calibrate your TV.

What I was getting at in my post was that the A2 may be sending different video "levels" than the TV is expecting, for example sending PC video levels instead of "studio" video levels. This has been an issue for Toshiba players for some displays, most of them being DVI input displays. The issue is that "black" for PC levels is at 0 and "black" for studio levels is 16. So if the display outputs black (or doesn't output anything actually) when it sees 16, it will output a little bit more brightness for 17, a little more for 18, etc. But if the input video has been set to send 0 for black, 1 for a little brighter, etc. 16 should be a fair amount brighter but the TV may be expecting 16 to be "black". Basically, all dark video information will be displayed darker than it should be. I'm not say this it the case for you, but it's a good chance.

In order for a lot of this to "sink in" and if you are interested, you need to do some digging here and maybe at the Wiki site about digital video. PC RGB, studio RGB, YCbCr, brightness, contrast, component video, "blacker than black". The Digital Video Essentials DVD has some good tutorials while explaining calibration. It's a lot of stuff to digest, biting off a little at a time is the best way.

larry
post #5 of 5
Thread Starter 
Cool, thanks for the info. Yeah, I've been trying to re-calibrate my TV and noticed the player is much darker when turned on. I'll be getting the most updated DVE soon, so I'll try to get my perfect settings.
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