Fix some video hang issues

[dbz400]

Looks like the original assumption is not good enough and return not expected pts value .This fixes video issue in "The Warrior" and "Dead Head Fred"

This fixes #5003

[hrydgard]

Hm, returning video pts as audio timestamp also feels wrong... it doesn't break anything else, does it?

[dbz400]

I did try return m_audiopts , seems to be not working .I tested few other games with CG playback and looks fine though .

[unknownbrackets]

I'm assuming, since you were so sure Wild Arms XF is fine, that you have not bothered to check any of the games you tested to see if this causes audio desync issues. I don't think it's right to just blindly return obviously wrong values.

-[Unknown]

[dbz400]

Yep, i do think it is somehow not correct and may be only work in some cases though.However , at least we know they are related to pts .