Why is the DVD Rebuilder time consuming?

[coody]

Having tried the DVD Rebuilder to back up but it is very time consuming. Probably it is due to the Hcenc 0.19.0.1 passes every VTS segment two times. Can it be set to pass one time only? If so, will it have an effect on the picture quality?

[guns1inger]

DVD Rebuilder is slower than something like DVD Shrink because it actually re-encodes the video, rather than just screwing around with the data that is already there. For larger reductions, this produces a much higher quality result.

You do have a couple of options. First is to update your version of DVD Rebuilder. HCEnc is not up to 0.22, and Rebuilder is using at least 0.21. There have been substantial speed improvements over the past couple of versions. 0.22 even uses multiple cores if you have them.

You can also use Rejig instead of HCEnc, which is a transcoder like Shrink, and therefore substantially faster.

Or you can buy CCE Basic and use that. It is faster than HCEnc, although you will still have a wait.

HCEnc is primarily a 2-pass VBR encoder. It can do CQ (Constant Quality) encoding as well, but DVD RB doesn't support this yet (perhaps the latest version does ?).

Otherwise, your only choice is to upgrade to system to something much faster

[AlanHK]

Having tried the DVD Rebuilder to back up but it is very time consuming. Probably it is due to the Hcenc 0.19.0.1 passes every VTS segment two times. Can it be set to pass one time only? If so, will it have an effect on the picture quality?

HCEnc can be made to do one pass, but then the size becomes unpredictable.
So if you need it to fit snugly on a DVD, that won't work.

If you only need to reduce size by 5% or so, try ReJig, it can squeeze MPEGs very quickly. But for higher compression, better to reencode, which is time consuming.