theoretical 2pass VBR question here

[menace]

Ok, say I have taken a laserdisc, captured in Huffyuv, converted to Mpg in Tmpgenc at 4800kb/s using 2-pass VBR and burned to a dvdr..

Now what if I was to rip that same dvd and run it through tmpgenc again at the same bitrate and 2-pass VBR--Would there be any quality gains?

Opinions?

[SLK001]

No quality gains are possible... Where would it come from?

[Gazorgan]

NO !
Absolutley not. Everytime you re-encode (with a few exceptiosn for noise filtering) you lose quality.

You have the original Huffyuv capture, always work with that. If you need to improve the quality, try frameserving from VDUB and apply some filters. There's a number of things you can do to improve a laser disk capture quality. And I believe there are a number of guides to help you (search laserdisk and VHS capture).

[menace]

I was wondering if a another time through the encoder would smooth any spots it missed the first time--kind of silly I know but in this game, one never knows

[ZippyP.]

Rule of thumb: Avoid re-encoding whenever possible.

It's sort of like copying cassette tapes, there's always a loss from generation to generation.

[MrKGB]

vbr is good only for saving space. qulity will never be better than cbr with bitrate equal to max bitrate of vbr.