No aspect ratio 5/4 in Tmpgenc Xpress

[sychern]

Video
Format : RealVideo 4
Codec ID : RV40
Codec ID/Info : Based on AVC (H.264), Real Player 9
Duration : 2h 0mn
Bit rate : 534 Kbps
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 5/4
Frame rate : 25 fps
Standard : PAL
Resolution : 12 bits
Bits/(Pixel*Frame) : 0.051

I customize my mpg from rmvb in actual width and height.
How about aspect ratio 5/4?
I can't find it at Tmpgenc xpress. It got 1:1, 4:3 and 16:9 only.
Should I put 1:1?

[manono]

No, you make it either 4:3 or 16:9. It'll still be 720x576.

Bits/(Pixel*Frame) : 0.051
Bit rate : 534 Kbps

This thing must look like utter garbage already.