Does TMPGenc go past the 2 pass VBR ?

[Xtreme]

I was wondering if TMPGenc goes past the 2 pass VBR ? Or is there something i can do to get 3, 4, 5 , or even 9 pass VBR ? Or should i buy CCE to get this kind of VBR passes ? What is all of your expert opinions ?

[Cornucopia]

TMPGEnc only does up to 2pass.

CCE can do more.

If you set the settings right, you really don't need to go above 2-ass (whoops!) 2pass.

1 pass is to analyze, 2nd is to encode. Any more is just comparing the "error" or difference between that encode vs. the original, and adding a few coefficients to minimize this difference. It's one of those Entropy/Hyperbolic function things, which will provide diminishing returns with successive passes.

A slight change in the bitrate or matrix probably makes as much difference. (Ooh, that sounds like flame material!).

Look at what the Heavy-duty hardware encoders do (Zapex, Sony, Spruce, etc). 2-pass is the max. They just do segment re-encoding to fine-tune the bitrate on particular sections of the video.

If you're careful with quality source material (uncompressed 601, DV, or maybe even high-bitrate DVD), and with judicious use of pre-filtering, a 2-pass encode should be all that you need. But don't just take my word for it--do lots of tests with DVD-R/W's and CD-R/W's (ok, +R/W's too ) What have you got to lose-you don't need to encode 2 hours worth. Just try 30 seconds here, 2 minutes there. And you can always erase your coasters and start again. Then you could impart your knowledge and experience onto the rest of this group.

Happy encoding!

Scott

[Xtreme]

Well said Cornucopia,
Much appreciated advice. But what is better to encode in 2 pass VBR, TMPGenc or CCE ? Right now i use TMPGenc, but is CCE better or faster ?

I have not used CCE at all, but i have heard some excellent things about it. Are they all true or is it someones figment of imagination ?

[BJ_M]

you can get excellent results with either of them .. CCE is faster though ..
A lot of people feel CCE is better - but doesnt do so good at lower bit rates ...
The biggest single factor is source materal and bit rate .. well thats two factors ..

[vitualis]

Yes, there are diminishing returns with additional passes, but 2-pass is not the be all and end all. Certainly 2-pass makes a big difference over any 1-pass method and the yield from doing 3-pass is not as great. However, you will see benefits doing doing additional passes if you are willing to make the time/processing commitment.

A slight change in the bitrate or matrix probably makes as much difference

Perhaps, but these things are independent to multipass encoding...

Regards.