How do I handle 544x576 4:3 MPEG2

VS88 · Post by **VS88** » Mon Dec 04, 2006 3:50 pm

Hi, I regularly use my PC as a form of TV Timeshifting and record off-air to edit and DVD - to play on DVD player in lounge. Strictly for personal use only and recording for Timeshifting is allowed in the UK.

The problem I am having is how to process recordings which VS10+ shows as having properties of 544x576 4:3 MPEG2. When these recordings are viewed via PowerDVD they appear Widescreen in perfect proportion - these recordings come from various Digital TV channels

VS10 displays them as 4:3 recordings and no matter what changes I make to the Project Properties when outputting via Create Video File it never outputs a true Widescreen file.

I have tried all combinations of setting 16:9 and selecting various nnnx576 formats available in VS10

Does anyone have a solution for this problem

Trevor Andrew · Post by **Trevor Andrew** » Mon Dec 04, 2006 4:45 pm

Hi

Just a few thoughts

When viewing in power dvd hit the info button to view the file properties.
Do they indicate 16:9?

When viewing the clip in VS is it in proportion (not distorted)

The 544 x 576 is not afaik a standard dvd format, VS may have trouble viewing.

You can use VS to distort the frame and keep in aspect ratio.

Also try un-checking File-project properties-edit- perform non square pixel rendering.

Without seeing the actual video it is difficult to comment more.

Trevor

maddrummer3301 · Post by **maddrummer3301** » Mon Dec 04, 2006 4:57 pm

VS88 · Post by **VS88** » Mon Dec 04, 2006 10:18 pm

Hi Trevor

1. PowerDVD does show 16:9
2. Viewing in VS10 shows distorted perspective - too tall

Am unable to correct distortion in VS so am going to try a couple of other editors

heinz-oz · Post by **heinz-oz** » Mon Dec 04, 2006 10:44 pm

I wish you luck. Since you are creating a DVD and your frame size is not compliant to the DVD standard, any decent editor is going to recode your video to make it compliant. That is where, IMHO, you problem lies.

You should try to use a 2D static path over a color clip in true PAL 720 x 576 px (as a background) and put this video into the path frame, keeping the aspect ratio.

That might work.

Sektionschef · Post by **Sektionschef** » Tue Dec 05, 2006 2:51 pm

Hi
In Europe it is common that DVB-T(digital terrestric) or DVB-S(satellite) TV stations send out their TV programs in 544X576 mpeg2 format.
The content of the frames is already squeezed horizontally which means if you just enlarge(stretch) 544 to 720 WITHOUT keeping the aspect ratio then the picture would be fine and the aspect ratio will be OK(no long heads

)
In other forums some people have posted that patching the mpeg2 sequence headers can fix the problem because then the DVD-players would stretch the 544 frames to 720 and the picture would be fine.
However, I have tested this and had no luck, my DVD player did not accept this patching method(perhaps this depends on the tolerance of the DVD player).
I found no other solution than resizing the frames to 720 and then reencode to mpeg2 to burn a DVD.
I do this by using virtualdub-mpeg2(freeware) as a frameserver and reencode with TMPGEnc where I use virtualdub's resize filter to stretch the picture horizontally.
Would this also work somehow in VS10?
Regards
Sektionschef

VS88 · Post by **VS88** » Tue Dec 05, 2006 5:31 pm

Thanks Sektionschef, I will try your method using Virtualdub