Other Original PAR vs PAR 1:1

[soyin]

I always wondered why DVDFab changes the original PAR (pixel aspect ratio) which is responsible for the Display Aspect (4:3 / 16:9) to a PAR=1:1

By doing this I have to get the wide screen by changing the movie itself. Does this give a BETTER quality then just using the original PAL (720x568) with its pixels/PAR definition?

Hope th get some answers about the why(s)..

[glenns]

The black bars are not encoded if the video is letterboxed it wastes space and time.

[fengtao]

It's mainly because some players don't follow PAR in video file.

[soyin]

It's mainly because some players don't follow PAR in video file.

OK. But than again, that must be old players? My point is, that if I use a program that does handle PAR=1.4222 for a 16:9 PAL display I get much higher Bits/(Pixel*Frame).
Bit rate mode: Variable
Bit rate: 4 740 Kbps
Maximum bit rate: 7 500 Kbps
Width: 720 pixels
Height: 576 pixels
Display aspect ratio (DAR): 16:9
Standard: PAL
Bits/(Pixel*Frame): 0.457

The latter is only 0.327 using DVDfab with the same bit rate but creating the movie with 1024x576 with a PAR 1:1

That's why I asked if the quality suffers by changing the original PAR.