Is it OK to calibrate the gray scale using the blu ray Video Essentials, and then use one of the DVD calibration discs to adjust primary and secondary colors? The color gamuts are of course different for DVD vs. blu ray...

The reason I'm asking is (as far as I know) none of the currently available HD calibration discs have windowed primary/secondary color test patterns. (I know the avs hd 709 disc has them, but my Denon 2500btci transport can't seem to play the avchd format...)

I've been waiting for the Avia II blu ray disc to come out, but it's taking forever. The last I heard it was due out 1Q 08 and that's long past...

I typed BDMV in search for the player thread you had posted to, and it returned http://www.avsforum.com/avs-vb/showthread.php?p=14392180#post14392180 Based on that I figure there's a good chance the player will play the BDMV version if you can find a way to write to a Blu-ray disc. If it was me I might write BDMV to DVD to see if it would work, but odds are that's a very long shot because I can only think of about 3 or 4 players that can read BDMV on DVD.

What you're asking is somewhat player and display dependant. You don't say what display you're using and I'm not familiar with the player, so my response is somewhat limited in that regard. Blu-ray and DVD are encoded differently, and what you're getting at really has nothing to do with gamut from everything I've seen and read. I'm just going to link to http://www.avsforum.com/avs-vb/showthread.php?t=1083558 because it is a related question and my response there explains the ColorHCFR measurements from my BDP-S1 player on my display. You'll see that my Blu-ray player and TV measure very similar regardless of source type. It's not necessarily a given that will be the case will all player & display combinations, so all I can think of to get an idea of possible error would be to measure common items. For example if DVE has fields then measure those and compare how they measure against fields on the SD DVD you're using for window measurements.

Thanks for the reply! There doesn't seem to be any easy way to get a copy of the BDMV file on blu ray disc (unless you know someone with a blu ray burner, and I don't).

Let me ask the question again, a little differently.

Assume I do a gray scale and primary/secondary color calibration using a standard definition calibration DVD (Avia, for example) and the rec. 601 CIE chart in HCFR. Will I also end up with a good gray scale and color decoding when playing a blu ray disc (in the same player using the same input on the projector)? Or must one use HD test patterns to get a good calibration for blu ray?


I typed BDMV in search for the player thread you had posted to, and it returned http://www.avsforum.com/avs-vb/showthread.php?p=14392180#post14392180 Based on that I figure there's a good chance the player will play the BDMV version if you can find a way to write to a Blu-ray disc. If it was me I might write BDMV to DVD to see if it would work, but odds are that's a very long shot because I can only think of about 3 or 4 players that can read BDMV on DVD.

What you're asking is somewhat player and display dependant. You don't say what display you're using and I'm not familiar with the player, so my response is somewhat limited in that regard. Blu-ray and DVD are encoded differently, and what you're getting at really has nothing to do with gamut from everything I've seen and read. I'm just going to link to http://www.avsforum.com/avs-vb/showthread.php?t=1083558 because it is a related question and my response there explains the ColorHCFR measurements from my BDP-S1 player on my display. You'll see that my Blu-ray player and TV measure very similar regardless of source type. It's not necessarily a given that will be the case will all player & display combinations, so all I can think of to get an idea of possible error would be to measure common items. For example if DVE has fields then measure those and compare how they measure against fields on the SD DVD you're using for window measurements.

Here you can do some testing for us. http://www.sendspace.com/file/6remec includes 75% windows from a tsmuxer output. You'll need the 7-zip software to decompress, and then burn the iso like with the AVCHD version. It doesn't have a menu, but there's a chance your player might run it from DVD media.

Assume I do a gray scale and primary/secondary color calibration using a standard definition calibration DVD (Avia, for example) and the rec. 601 CIE chart in HCFR. Will I also end up with a good gray scale and color decoding when playing a blu ray disc (in the same player using the same input on the projector)? Or must one use HD test patterns to get a good calibration for blu ray?

Like I said, different players or displays could react differently. The measures attached at http://www.avsforum.com/avs-vb/showthread.php?p=14520435#post14520435 shows that my player and display combination measure very similar regardless if the source is SD DVD, upconverted SD DVD, or HD. It's not a given that all player and display combinations work that way.

The only way I can think to verify how your electronics function (if the attachment here doesn't work and you cannot get a Blu-ray burn) would be to make a comparison with the same pattern from the different encodes for both standard DVD or HD video. Because DVE doesn't have windows, to make sure that the measurements match you would have to compare field measurements from both video encodes. If they match, then yes what you're talking about seems reasonable.