16:9 DVD problem

[symonjfox]

Hi, I'm pretty a newbie about DVD authoring. I was triing to create a DVD that contains really a lot of video.

I like DVD quality, but for my purpose, this is a waste of space.
First, I tried to create low resolution clips (ex 352*576 or 480*576). I know that in many cases this is a NON standard compilant res, but I don't want to waste space with 704*576 or 720.

I was triing to create a 480x576 16:9 movie. I encoded the video using CCE, setting all perfectly.

I was triing to include this file into TMPGenc DVD autor, but the program says there's an error so 16:9 stuff is avaiable just for 704/720 * 576 resolutions.

I know that I can patch the MPV file to 352*576 4:3 and then repatch the VOB, but is it really true that there can't be a 480*576 16:9 DVD? I played it fine using WinDVD.

Thanks for the replies

PS: I searched a lot but nothing was the answer I was looking for.
PS2: I have NO DVD RW to test ATM. I was also looking for good compatibility with other DVD players than mine.

[oddyseus]

resolution of 480x576 is svcd. Dvds r not compatible with it, u have to patch and pray that it might work. It doesn't always and in all standalones.

DVD specs require full 720x576 or 352x576 or 352x288 only.

[Kika]

DVD specs require full 720x576 or 352x576 or 352x288 only.

You have forgotten the 704x576-Resolution, which is also defined in the Specs.

16:9 is only alowed on the both Full-D1-Resolutions (720x576 Full-D1, 704x576 Broadcast-D1).

Files with other resolutions can be patched, and most DVD-Players will play them correctly, but not, if you are using 480x576. Try it with Half-D1 (352x576), if you want a smaler Video to spare Bitrate.

[oddyseus]

Thanks Kika, I sure skipped the broadcast resolution :)

[symonjfox]

Yes, I know that 480*576 is NOT standard compilant. My question is a little different.

I'm SURE that SVCD spec allows also 16:9 (http://www.uwasa.fi/~f76998/video/svcd/overview/#technical_features) but many players won't resize the video, so it will result in a "egghead" video.

I wonder if a 16:9 DVD MUST be 704/720 * 576 or is it possible to use NON standard res to keep it 16:9.

[Kika]

I have done anamorphic Encoding with other Formats like Half-D1 or 352x288. Both of my Players do play such Videos correctly. But it's out of Specs, so it might work for you... or not.

[mpucoder]

Exactly, 16:9 is permitted only on 704 and 720 width video. So no guarantees that any player will display it properly. The restriction is there so that players need simpler resizing. The required resizings are:
16:9 auto-letterboxing requires 3:4 height reduction
16:9 auto-Pan/Scan requires 4:3 width enlargement
352x480 or 352x576 uses 2:1 horizontal doubling or blending
352x240 or 352x288 uses 2:1 on horizontal and vertical
Using either of the last 2 resolutions in 16:9 would mean that in order to use a standard display both 2:1 and one of the other resizings would have to be used in combination.

It will most likely work on widescreen displays, where only 2:1 resizing is required.

[symonjfox]

OK, understood. Thanks for the replies.

I think that my player won't play them correctly, since I tried to create a 16:9 SVCD but it played it as a normal 4:3 stuff ... maybe DVDs also.

It's better to don't risk, 704*576 ... let's hope to not to see thousand of macroblocks :rolleyes:

[Kika]

@symonjfox

SVCD and DVD are different stories. Anamorphic Videos on SVCD won't work on my Player too, except, i played a DVD just before the SVCD.
On DVD, my Player accepts Non-Standard-Anamorphic Videos (but NOT anamorphic 480x576...)

But you'r right. It's always better to do Standard-Resolutions.

[mpucoder]

I would rather spend some time playing with resizing and filters to get the video to look the way I want, at a standard resolution, than to trust the resizing to the player. While the players use some really good DSPs, it is a real time operation, without any human guidance. And it does vary, some players use simple doubling, some reduce the pixel clock, while others use bilinear or bicubic algorithms.