AVS HD 709 - Blu-ray & MP4 Calibration - Page 27

I consider the simple answer to be somewhere along the lines of the last part here http://www.avsforum.com/avs-vb/showt...4#post14237474

There are basically three places where problems could come up - download, uncompression, or burning the iso. Based on what you wrote, I would think it's likely either the first or the second if two programs report the same thing.

1) Generally I would suggest to try the other download type. So if you had downloaded the .exe before, then try the .7z and see if that changes anything. If things are working correctly on download and uncompression then the file size for the resulting iso should be the same regardless of which download type is used, but it's possible that might not be the case if something isn't working right. So basically where I would start is to try the other download (.exe or .7z) and see if you get the same error.

2) If you try the other download and you still get the error, and the two resulting .iso files are the same file size regardless of the download type, then at that point I would suggest to try Imgburn instead of the programs listed.

Basically DVE HD does the same thing in how it provides one filter for both SD and HD patterns. From what I've read it seems the accuracy of using a filter to set color and tint will vary depending on the display, so my opinion is that the question to be asking here is - how accurate might a color filter be in comparison to maybe using a spectroradiometer for my display? That's a question I can't really at all address for any displays other than what I own, but if you want to read through what follows I'll describe what's going on in regards to the media and how color gamut you mention relates.


SD (Ex: commercial DVD) and HD (Ex: Blu-ray) both store color information in terms of YCrCb. For SD, Rec. 601 defines an encode/decode relationship for YCrCb to RGB, and Rec. 709 relates YCrCb to RGB for HD. Although either video format stores color information as YCrCb, how to convert YCrCb to RGB differs between Rec. 601 and 709. This conversion difference matters because typically at some point YCrCb will be converted to RGB.

In a simple player and display setup, often either the display or player can be set to handle the conversion to RGB. One complication arises when upconverting or playing back both SD and HD, that being how to output YCrCb for another device to decode. Typically in such a setup, the expectation is that by outputting YCrCb at HD resolution (such as playing HD video or upconverting a DVD) Rec. 709 will be expected for decoding. One way to handle this is to use a conversion matrix on the YCrCb for the upconverted DVD so when it's decoded with Rec. 709 the resulting RGB values are similar to what would have been expected if Rec. 601 had been used with the original material.

Both of my players appear to simply use a standard conversion matrix for YCrCb in DVD upconversion as described (See Note 1). This assumption comes from how I measure similar color results at the display regardless if the player is outputting YCrCb from DVD, DVD upconverted to HD resolution, or native HD video (See ColorHCFR file attachment for measurements). While I do understand Rec. 709 does define intended color points that differ from what's defined by SMPTE-C, in terms of what information actually appears on the disk (YCrCb) and how that information is typically decoded (converted to RGB) Blu-ray really does not have any different color gamut from DVD. In practical terms a 75% blue is generally expected to be similar at the display, regardless if the source is DVD or HD media (See http://www.avsforum.com/avs-vb/showt...2#post11877342 for further discussion). This is why I'll generally suggest the video type is somewhat irrelevant, and what really matters is to ask - how accurate are filters in relation to the display I'm using?


Note 1 - It would be possible to modify YCrCb or RGB in different ways, but as far as I can tell this is not commonly done with standalone players so it's irrelevant for general discussion.

 

Color.zip 3.2919921875k . file

I don't own a PS3 so I can't say how it operates. If I was to guess I would figure it works in line with what I attempted to describe. I haven't seen anything where I would expect the PS3 would do anything that would alter the gamut produced by your display. There are a lot of different items brought up in the linked thread such as http://www.avsforum.com/avs-vb/showt...6#post11890066 That might suggest it wouldn't necessarly be "proper" to alter gamut even if your electronics allowed for such a thing.



I would suspect you should find settings to be similar.