FLV to mpeg - what pixel aspect ratio?

[gsh]

I have a number of widescreen flv I'd like to burn to DVD to watch on tv. I have never dealt with flv files before - my process is as follows
flv>Virtualdub>deblock filter/resize to 720x480
frameserve toTMPGenc>encode source ar=16:9 display output ar=16:9 display
The resulting file looks ok on pc but seems slightly stretched widthwise on DVD playback.
I'm guessing it has something to do with pixel aspect ratio. I have tried frameserving to 16x9 project in Adobe Premiere and interpreting the footage as square pixels but that just ends up with the picture in the centre of the screen.

I don't know of a programme to find the par of an flv file. The only thing I have is Quick Converter, which has the option of showing the technical details of the file. This is what it says.

Video
Format : VP6
Duration/String : 3mn 52s
BitRate/String : 1 Config_Text_ThousandsSeparator216 Kbps
Width/String : 600 pixel3
Height/String : 338 pixel3
DisplayAspectRatio/String : 16/9
FrameRate/String : 30 Config_Text_FloatSeparator000 fps3
Bits-(Pixel*Frame) : 0.200

When importing into VDub, for some reason pixels are added - 14 at the bottom and 9 on the right. (608x352) These show as an elongated section on the screen outside of the original frame. No idea why this is. I have been cropping it so the framesize is 600x338 before resizing.
What should I be doing in order to convert to mpeg/DVD and maintain the correct display?
Should I be cropping the extra pixels then letterboxing back to the original framesize before resizing to 720x480?
Thanks for any help you can give.

[Baldrick]

After you resized in virtualdub it doesn't contain any black borders right? It should be full frame and then when you add the 16:9 flag it SHOULD look correct(600/338=1.77 =16:9).

What do you use to author?

[poisondeathray]

I suspect the "extra pixels" are added because internally the dimensions are mod16 (evenly divisible by 16), so there is padding. Many codecs work like this

[gsh]

After you resized in virtualdub it doesn't contain any black borders right? It should be full frame and then when you add the 16:9 flag it SHOULD look correct(600/338=1.77 =16:9).

What do you use to author?

No borders - full frame 720x480. The 16:9 flag is being correctly set in MPGEnc ans shows as correct when authoring in DVDLab Pro. Everything seems to be correct, yet they look slightly stretched, which is why I thought it may be due to the PAR.

[poisondeathray]

600/338 will only look right at 1:1 (16/9 = 600/338 x 1/1), when you apply the 16/9 flag for widescreen dvd, it will stretch the image

you can use fitcd or resizecalc to figure out what you should adjust it to

[gsh]

Thanks.
Using fitcd, source 600x338 1:1 monitor, destination 720x480 DVD 720 anamorphic, it shows resize of 656x448.
So I resize the original and add borders to make it to 720x480, and set the 16:9 flag?
Have I got that right?

[jagabo]

What you did originally looks right to me. Resize 600x338 to 720x480, convert to MPEG2 with 16:9 source and 16:9 DAR. Are you sure the FLV has the right AR to start with?

[gsh]

I guess the flv AR is correct - it plays/displays fine on a pc.

[gsh]

Thanks.
Using fitcd, source 600x338 1:1 monitor, destination 720x480 DVD 720 anamorphic, it shows resize of 656x448.
So I resize the original and add borders to make it to 720x480, and set the 16:9 flag?
Have I got that right?

Quoting myself here - should I add borders, or should I resize to 656x448, then resize that to 720x480 and set the flag?

[jagabo]

FitCD is adding overscan compensation. And using 704x480 as the frame size for the 16:9 DAR (with 8 bits of padding left and right).