Let me try this another way (I'm not on your ignore list, am I? : :confused:
Here is a post by "dr1394", Ron, who I don't know but have read some of his posts and seems to know his stuff:
|The firstname.lastname@example.org video bitstream structure of HD-DVD prevents decoders from generating email@example.com output. Although the telecine flags may describe a perfect 23.976 coded pictures per second on current HD-DVD movies, there is no specification (MPEG-2, VC-1, H.264 or the HD-DVD specification itself) that says this must be so. In fact, the telecine flags can describe a bitstream with any amount (between 23.976 and 29.97) of coded pictures per second.
Because the telecine flags are variable, the decoder cannot ignore them and hope to properly decode all legal firstname.lastname@example.org bitstreams. The decoder must pay strict attention to repeat_first_field and top_field_first flags. Therefore, for HD-DVD the decoder will always output at email@example.com by repeating fields as instructed from the 23.976 coded pictures per second on the disc.
firstname.lastname@example.org output from HD-DVD is a non-starter. However, email@example.com is definitely possible from the next generation of HD-DVD players with the inclusion of a deinterlacing chip (like the Samsung Blu-ray player).
Here is a post by me in which I was asking for input on this issue, as it contradicted what I'd previously believed wrt HD DVD and progressive output:
|I would also like more insider opinions on this 1080p issue; it's been discussed in several other threads, but I'd be interested in opinions from folks like Stacey, Ben, Amir, Keith, and Tom (and anyone else I may have left out with experience in this area). I have two concerns:
1-I'd like to know that an HD DVD player could one day output 1080p without the player going through an interlace phase (not suggesting this will be possible with the current Tosh; just in general for the format). In my case this would be for future use, as I don't currently own a 1080p compatible display.
2-I'd like to know if there is a reasonable possibility that a future HD DVD player could produce 720p without going thru an interlace mode (if that's the correct word). In other words, take the 1080p/24 that's encoded on the disk, scale to 720, and perform whatever framerate conversion is necessary to output 720p (which presumably would be 720p/60 at the output for compatiblity with current displays). This is a more immediate concern of mine; I have a Pio plasma that is (approx) 720p; and I would prefer that it receive a pure progressive source. Is that possible, or is all this flagging talk (most of which I don't understand) going to make that impossible or unlikely. From some of Stacey's posts of a year ago I thought that HD DVD had no issues with regard to getting a "true" progressive output, but after Don's post I guess now I'm not sure whether that was actually explicitly stated.
Here is another post by me directed to you, as no one had responded (maybe I'm on everyone's ignore list :p ):
While you're here , any comments on this post of mine (from yesterday in this thread)? No one has responded to it, and am curious as to the position of the insiders wrt getting progressive video off of an HD DVD without going thru a interlace-de-interlace process somewhere in the chain. From previous posts by Stacy (from a year ago) I had gotten the idea (perhaps mistakenly) that this was trivial for HD DVD; a recent post by "dr1394" (Ron) seems to suggest otherwise.
Finally here is my last post on the subject:
Originally Posted by amirm
|OK, someone please ask an HD DVD/BD question before we all get in trouble ....
OK, maybe the third time will be the charm
How about this one?
The last just links back to the previous. I'd just like some input. It doesn't have to be the last word, can be clarified later, etc; but basically when everyone on here pretty much came to an agreement that "HD DVD is encoded 1080p", despite the flag or header difference to BD; and I had assumed that there would be no issue in getting "pure" progressive material off the disc; now Ron seems to be saying that the only way is to de-interlace ala the Sammy.