DivX 5.0.5 Pro - 1-pass vs dual (multiple) pass encoding

[Booster]

Is there any difference in visual quality between performing single vs dual pass encoding when using the DivX 5.0.5 Pro video codec? I'm very curious. You may ask why don't I just encode in dual pass and check it out myself, I would, but my PC is very slow at encoding, the max I'm getting is about 8 FPS with single pass (Celeron 1.7, Radeon 7K).

I'm just backing up some old DVDs I own, and I want the best quality possible. My goal is to fit them on 1 700MB CD (each movie), and I have encoded several movies like that. The quality is fairly acceptable to my standards. But maybe the dual pass is better, worth extra time? What do you think, is it a significant quality improvement?

 

[Zugzwang152]

for a big action movie, i would say go with 2 pass. the difference is noticeable, in complicated scenes. if it's just a drama or a comedy, then 1 pass might be fine. i use 2 pass all the time anyway

 

[Confused]

Dual pass will allow the encoder to see which bits it can use a lower bitrate for bits that need it (large flat colours, low movement scenes), and higher bitrates for the bits that need it (fast action scenes, complex scenes etc)

2 pass will make best use of the codec and allow it to fit on your CD best 🙂


Confused

 

[Miramonti]

definitely two pass, much better quality. to speed things up use yv12 color over rgb32, its much faster.

 

[Vickas]

The first pass takes much less time anyway, it usually goes 40+ fps on my Duron 750 depending on resolution.
The Second pass would go just like singles anyway, not much extra time.
Go for dual!!