OPV success stories with D2Sroba

[r6d2]

Hi, I have been using these settings for the last few days and I have got about 50 percent success on the sizing of the first pass (i.e. no need for second pass):

GOP 3/4, Sample size 2 percent, below 3 percent, above 0.4 percent (same as the cut image parameter), adjust Q 0.5.

It would be interesting if some of you can also provide systematic similar data to converge into something optimal.

[Crackhead]

my last encode (the first in a rather long time without encoding) was at 98,7% opv!

settings: gop 3/5; sample size 1%; limit 3%<>1%; adjustQ 1,0;

will have a look at my next encodes with these settings!

Greetz, Crackhead

[ralphthedog]

I must be getting somewhere around 50% one pass only(doing almost all DVD)

I use: GOP 3/4, sample size 2%, limit 2.5%< >0.2%, adjustQ 0.5

I found changing the adjust Q from 1.0 to 0.5 really made a big difference to the success rate.

[r6d2]

Originally posted by ralphthedog
I found changing the adjust Q from 1.0 to 0.5 really made a big difference to the success rate. Me too! Well, along with jonny's trick of course. I also decided to decrease the GOP to 12 to remove "unpredictablity" of frame sizes (well, sort of). You seem to have done the same.

Have you tried bigger samples?

[ralphthedog]

@r6d2, gave smaller samples a go after reading you and Tylo arguing about it:), without much luck accuracy wise......Have to try bigger.

GOP's to 12.....Yes it's deliberately in my CCE templates for D2SRoba to smooth out the frame sizes(or something like that?). I have no idea if it's really worthwhile or not.

[r6d2]

Originally posted by ralphthedog
Yes it's deliberately in my CCE templates for D2SRoba to smooth out the frame sizes(or something like that?). I have no idea if it's really worthwhile or not. Me neither, but since it's working, I don't fix it. :)

Anyway, you don't need to change the templates. That setting is modified by DVD2SVCD AFAIK.

[ralphthedog]

Originally posted by r6d2
Anyway, you don't need to change the templates. That setting is modified by DVD2SVCD AFAIK.

I thought the settings in the CCE templates took precedent over the settings in DVD2SVCD(although the values on the encoder tab still appeared in the log)? I seem to remember people complaining that the templates were being ignored based on what was in DVD2SVCD's log?

All that modifying of different templates for nothing!:rolleyes:

[r6d2]

Originally posted by ralphthedog
I thought the settings in the CCE templates took precedent over the settings in DVD2SVCDThey do, but those that can still be modified and are not greyed out, are stil controlled by DVD2SVCD.

Please do me a favor, just so everyone gets out of doubt... Use a template with GOP12 and change the settings in DVD2SVCD to 15. Then look at the CCE_Project_file.ecl generated by DVD2SVCD and search for the GOP parameters... Which ones take precedence?

I did it and it worked, but it may just be my version, which is an unreleased beta.

[ralphthedog]

I think the key is like you say, not greyed out.

Will give the GOP test a go when I get a moment and report in.

EDIT: You are right, did a quick test.....GOP values are from DVD2SVCD, not my template.

At least adjusting the settings in DVD2SVCD to match my templates (just in case) wasn't fruitless....

[ADLANCAS]

Sorry if I make a question that is already made, but I've made a search and have some doubts:
1- Can D2SRoba make only a single pass (1pass OPV) ?
2- If yes, how can I configure setting to do that ?
3- Everytime search of Q value starts with 32. If I "know" that is a small value, is it possible to change the first value of Q ?

I already used D2SRoba before, but I'd like to use it "faster".

Thanks,

Alexandre

[r6d2]

:readfaq:

[ADLANCAS]

I've made a search and have some doubts
Everytime when I have some doubt about something I read posts, FAQs, search and so on.
Unfortunately, sometimes I need to ask even after spending time here and there, just because I don´t understand such thema.

[tylo]

1. yes
2. uncheck 'Conditional sizing pass'
3. using 'auto' will use the Q in 'Auto Q' as first, otherwise 32 - which is a good starting value, there is no need to change that.

[ADLANCAS]

Thanks a lot for your attencion!

Alexandre