Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I would like to do a backup of some movies on DVD with File Factory.

In the output setting, by default the option 2 pass encoding is disabled. Do I need to enable it for better quality and does it worth?

share|improve this question
up vote 2 down vote accepted

Yes, 2-pass-encoding will give you better quality (for the same file size). Whether it is worth it is impossible to tell. The actual quality/size gain depends on the material to be encoded (and the encoding). You might save maybe 10%-30% (maintaining identical quality) for average material.

But to really know it, you can only try...

BTW, Wikipedia has a good explanation of the tradeoffs involved in multi-pass encoding:

share|improve this answer
thank you for the link, I will do some tests – Drake Mar 3 '10 at 9:40
Basically you pay with your time for quality. If you got time, then do 2-pass. That's it. – Shiki May 24 '10 at 20:49

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.