Actual "Widescreen"

[humet]

Could anyone tell me how to make a actual "Widescreen" movie during the AVI > MPEG2 process. Because at the moment my Panasonic widescreen TV doesn't recognise the DVDs I've made as being widescreen, it goes into "Just" mode which stretches and skews the picture to fit without the black bars and sometimes the picture gets cut off.

Do i need to adjust anything in the IFO file or is it the "Video arrange method" in TMPGENC??

Any help is appreciated

thanks

humet

[DJ Bobo]

Suppose we have a 2,35:1 DivX movie with 640x272 resolution (this resolution doesn't really matter, it's just an example)

You want to make a 16:9 anamorphic PAL DVD out of it with a 720x576 resolution.
As it is 16:9 anamorphic (widescreen as you call it), the virtual resolution is 1024x576.
So Y = 1024 / 2,35 = 436
So this is how your AVS file will look like:
avisource("blabla.avi")
bicubicresize(720,436)
AddBorders(0,70,0,70)

For an NTSC-DVD with 720x480 resolution, the virtual resolution is 854x480
So Y = 854 / 2,35 = 364
So this is how your AVS file will look like:
avisource("blabla.avi")
bicubicresize(720,364)
AddBorders(0,58,0,58)

You load this in TMPG and be sure to have:
in the video tab -> aspect ratio: 16:9
in the advanced tab -> source aspect ratio: 1:1 & video arrange method on center.

Encode in progressive mode (instead of interlaced) for highest quality.

[humet]

Thanks alot, seems to be working at moment, will see in morning. I was just wondering if the menus have to be animorphic or if they can be in 4:3.

I LOVE THIS FORUM!! :D

Thanks

humet

[humet]

Do i need to change the aspect ratio in the IFO file from 4:3 to 16:9 or not??

[DJ Bobo]

Don't know, guess it would be 16:9.
Any external help would be welcome here please.

[divxcollector]

How can we crop the non-anamorphic widescreen movies (4:3 but letterboxed) to make anamorphic SVCD's? What do we have to add to the avisynth script to crop some of the black bars to convert non-anamorphic 2:35.1 movies to anamorphic?

[DJ Bobo]

SVCD must be non anamorphic.

[Jafco]

humet,

In order for the dvd player/TV to properly recognize that it's a true 16/9 anamorphic widescreen, the ifo file needs to be properly set to 16/9 (either P/S or letterbox -- try it both ways -- I use letterbox most often and it's fine).

The menu can be 4:3, while the movie is 16:9. You can easily see it when you open the VIDEO_TS.IFO file and *also* the VTS_0x_0.IFO file in IFOEDIT. Make sure you set both of those (for the appropriate VTS number) to 16:9, and *Save* the IFO's afterwards.

Always do a "Get VTS Sectors" after any modifications just to be sure.

-J

[humet]

Jafco:

Do i still need to do DJ Bobos method or do I just encode the movie in full screen mode on TMGENC?

Thanks

[Buttfreak]

Here's my two cents on the subject and also a couple of questions for you Doom9 regulars out there. I'm proficient enough with DivX but am still coming to grips with all the finer elements of VCDs. In creating VCDs, I always want anamorphic widescreen (even though I know this flag isn't supported because as hakka504 says:

if you have a TV where you can change input aspect ratio manually then I recommend that you use that. More active pixels => better quality as mpeg1/2 will waste some bits on the black areas.
To this end, I use TPMGEnc's "Center Custom" arrange mode and work out the size of the video area using the math in Doom9's excellent DAR guide (http://www.doom9.org/aspectratios.htm) and shown in this thread by DJ Bobo.

To help me with the math, I've set up a little Excel sheet (attached) which I hope can help the rest of you out as well - even those of you creating SVCDs and DVDs. If someone can have a look and let me know if it's correct, that'd be great. I know it doesn't conform to mod-16. Perhaps the next version will.

/Buttfreak

[Buttfreak]

Now to the questions...

I'm having trouble understanding exactly how a video feed is treated by the VCD system. Let's take a NTSC VCD (352x240) as an example.

1. According to the DAR guide, if this feed is carrying a 16:9 image then it is stretched to 423x240. OK, I can buy that. But if it's carrying a 4:3 feed, is it compressed to 320x240?

2. If I start with a 4:3 720x480 DVD feed and want to convert this to VCD, the math of the DAR guide tells me the size should be 352x213. In fact, checking this by allowing VCDEasy to resize a white 720x480 BMP to NTSC still-MPEG, I get the same thing:

http://members.roadfly.com/jarborra/white43.gif

How can this be? If I encode this same feed (using 4:3 source, 4:3 video stream, and arrange mode full screen) I get a perfect copy...don't I? Should I be introducing these thin borders on my 4:3 movies or are these just lost in the overscan anyway?

Any help you guys could provide would be much appreciated. I think I'm on the cusp of understanding this. Reading hakka504, DJ Bobo's posts and all has been really helpful so far. Just a few more bits of information and I think I'm there! :D

[rmatei]

In addition to the "just" mode, your Panny should also have something like a "zoom" mode (forget what it's called but I've seen it on Panny plasmas & RPTVs), that stretches the 4:3 picture linearly and cuts off the top and bottom letterboxes.