Stretched Picture ?

[iparout]

Hi there,

I have encoded some DVDs into SVCD but I figured out that the SVCD picture turns out stretched vertically (the faces are longer than normal).

I am wondering if this is something I'm doing wrong or is it inevitable because of the DVD to SVCD rescale (i.e. 720x576 --> 480x576) ?

Thx in advance.

P.S : I use DVD2AVI to clip the black bars and then in TMPGEnc the specs are :

VIDEO : Aspect Ratio : 4:3 Display
ADVANCED : Source Aspect Ratio 4:3 625 Line (PAL)
Video Arrang Method : Center

<font size=-1>[ This Message was edited by: iparout on 2001-11-11 07:47:34 ]</font>

[Raa]

When you clip the black bars that's not 4:3 anymore, but 16:9 and then you shouldn't specify input ratio as 4:3 but 16:9. If you wish it to actually be 4:3 (just like I do, because 16:9 SVCD's don't work well for me), don't clip the black bars and it should be fine!

[SH0CKER]

It also depends on your player. My Panisonic DVD player has problems with diffren resolutions. I go to Advanced, Clip Frame and then Arrange Setting, then Centre custom size and adjust the pictrue. Use 480x480 resolution cause 480x576 takes longer to encode and does not have enough of a diffrence to waste time encoding at a higher resolution.

[iparout]

Bottom Line :

Is there a way to create non-stretched SVCD with the black bars clipped out ?

[Kdiddy]

yes, use Full Screen

[vitualis]

<TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font size=-1>Quote:</font><HR size=1 color=black></TD></TR><TR><TD><FONT SIZE=-1><BLOCKQUOTE>
On 2001-11-11 10:45:41, iparout wrote:
Is there a way to create non-stretched SVCD with the black bars clipped out ?
</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR size=1 color=black></TD></TR></TABLE>

What do you mean by "non-stretched"? A SVCD when played on the PC with a 1:1 pixel aspect ratio will always look "stretched". This, however, is irrelevant as SVCD play with a "display aspect ratio" (DAR) or 4:3. So assuming you havn't done anything funny, it should be the correct aspect on the TV.

<TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font size=-1>Quote:</font><HR size=1 color=black></TD></TR><TR><TD><FONT SIZE=-1><BLOCKQUOTE>Use 480x480 resolution cause 480x576 takes longer to encode...</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR size=1 color=black></TD></TR></TABLE>

I presume that iparout was making a PAL SVCD and thus the only resolution he can use that is compliant is 480x576.

Regrads.

[stanwebber]

you need a 16:9 widescreen tv to correctly display 16:9 svcd

[iparout]

Vitualis,

thx for the info man. I hope I haven't done anything funny, My encoding specs are mentioned in my first post so if anything looks wrong, then please tell me so as to fix it.

And yes, I am doing PAL SVCD but unfortunately I don't have a standalone DVD player as to check it on TV.

[Truman]

If you crop the borders with dvd2avi, you have to do the resize math by yourself. Let's say you have a DVD 16:9 (1:2,35 widescreen). Then you will crop 72 pixels top and buttom and get 720x432, but you still need to resize.
So use video arrange method "center(custom size)" and type 480x320. At the video tab set 480x576 aspect ratio 4:3.

This sounds quite complicated and yes, it is. Since dvd2avi can not resize when you use it as a frameserver, I suggest to do both crop and add borders in TMPG (advanced> clip frame) or even better use Avisynth to do this task.
Hope this helps.