Encoding credits.. what value for "encode credits at average quant"?

[SnotRat]

Hi. I'm using gknot .27 and divx 5.02. When encoding credits what value should i choose in the "encode credits at average quant" dialogue? The default is 20. When i add the job to the encoding queue the first line of the queue in the encoder tab says "Quality 20%" followed by the credits.avs. If i change the value to 30, it says 30%. Does that mean i'd get better quality by choosing higher than 20? Somebody please explain this to me. Thanks.

[manono]

Hi and welcome to the forum.

Using the default of 20 is fine. It's the quant value, and if I'm not mistaken, that precentage figure is incorrect. So raising the number to 30 lowers the quality of the credits, and lowering it (to 10, for example) raises the quality of the credits.

[SnotRat]

Thanks.

In another post i noticed people are using certain values like 12, 27, 28 and 31. Is that just personal preference or can it be anything like 15, 20, 25, 30?

[manono]

Hi-

It depends on what kind of credits they are. If there's video playing behind them, then you might not want to raise the quant for them at all. If they're the kind that don't move until replaced by more credits, you can probably go all the way to quant 31. Scrolling white on black credits can be a problem. With quant 20, you will probably see that they don't look so good. If you don't care how they look, then fine. If you do care how they look, you can take other steps to make them look better (the coring filter in VDub combined with a high setting for a Temp Smoother, for example), or give them a lower quant (I find that quant 10 saves a lot of space and they still look pretty good). You'll just have to experiment and see what looks good (or less bad) to you. They can be any quant between 2 and 31.

[N_F]

Personally I leave it at 20 if I think I need the extra bits, if I do a 2CD rip (or another movie that compresses really well) I often find myself using 12-14.

[SnotRat]

I was having problems encoding the credits for the movie Fight Club (ntsc) at even a average quant value of 2. I kept getting strange artifacts all over the place. After messing with the different levels of noise filters and trying c3d and fluxsmooth I found I got the best results by editing the avs with only TemporalSmoother(3) repeated five times followed by Lanczos resize. I don't fully understand the way all these things work yet and i'm wondering if there was a better way for me to achieve this.

[SnotRat]

Ah.. I found a better way. I found this little box that said "GMC" with a check in it and when i made the check go away so did my problems. :)