Originally Posted by sspears
Mark,

When we get to our color space article, I will include a waveform showing what happens when it gets dim. That may help. Images usually begin and end as RGB. The YCbCr is just for transport.

I look forward to reading the article. Its stuff like that which helps to expand the consumer's knowledge of the formats we are using.

Quote
A lot of filter occurs on both sides and its up to the content creation and playback to do it however they like. Really wish someone would have spec'd how to do it. Some are doing it so poorly it is shocking! smile

This is a discussion we've already had here. Video *decoding* should be deterministic, so all players, as a minimum (assuming no gross errors), should be capable of delivering the same image from the same source encoding. This is why I was sceptical about your Panny claims (and indeed any such claims that a particular player has a better image than it's competitors). To me it means that Panasonic are breaking the rules, backed up by your comment that other manufacturers are filtering to stay within the Nyquist sampling limits. On the other hand, we've all seen the benefit of breaking this rule with SDI for DVD (typically a sharper image with less filtering - although in that case it's more likely an argument for digital delivery vs analogue). But one can argue that correctly mastered DVD video should not have information above the Nyquist limit for the format anyway, so there shouldn't really be any benefit to breaking the rules. Is this not the same for Blu? In other words is your test pattern supplying chroma frequencies above the spec for Bluray video encoding and that such frequencies are generally not found in Blu material? Or is it really that other manufacturers are filtering too aggressively and losing genuine chroma detail?

Have you done A/B tests with movie material on the chroma issue? Are improvements easily visible? The Panny players are cheap enough that I'm tempted to buy one to see for myself but it seems a waste if the video material doesn't contain the information the Panny is capable of displaying?

Many thanks,

Mark

My Music : My Cinema