Yes, I believe so

-kwag

Burning right now...
I'll let you know in a second or two...

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AudioSlave

YES That was it. Works like a charm Damn, this looks good. The quality of QuEnc 0.45 is really something else
Thank you for the tip Kwag.

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AudioSlave

Now try encoding the complete movie using CalcuMatic (or other bitrate calcs) to get your average bitrate. Then see if the final size matches closely the wanted size

-kwag

Kwag, the GOP 3 Frames issue to me seems like an Scene Change issue.

Yes it does. But only when very close scenes are detected. If you look when the GOP was 6, there is no problem. There should be a constraint in the encoder to limit the GOP size to a minimum of IBBP (4 frames), and that should correct the issue. Or really: minGOPSize = number_of_B_Frames + 2

-kwag

I think this issue can be resolved. ffvfw has an option for minimum interval between I frames and since is also libavcodec based I think that nic can expose that setting as an advanced option.

Anyway, QuEnc made a lot of progress but it's output is still under the quality of ffvfw (ffdshow actually) and the gain in speed does not pay the quality loss. But it's still 0.45 release...

Edit: Well, I forgot, another big advantage of QuEnc is VBV compliancy. I wonder why ffvfw is the only libavcodec incarnation thas has this issue, why milan does not fix it...

marcellus

As I got the actual QuEnc vers. .... where can you see a command line option??? My vers. does not show one, neither shurely to alter it as its not avaiable.

He should offer more options of ffmpeg in his GUI .... for example processing interlaced sources.

Man, it's very fast!!!!!
I am currently encoding a AVI movie using the latest Dialhot v4 script:
With Trellis, GOP 18 and KVCD Notch I get 19.5 fps,
Without trellis, it goes up to 24 fps (realtime!)
Amazing speed.
Can't comment on quality yet, let's wait for the outcome. I am doing 2 pass VBR. I had previously encoded this movie using CCE so I'll be able to do a good comparison.

@incredible:
Do this:
QuEnc /?
A window will pop up with command-line options.

I have to retract what I said. In ffvfw the minimum I interval setting doesn't work as expected. With any value other than 1 for min I interval all GOPs are screwed, it puts a lot of consecutive P frames
Normal GOP: IBBPBBPBB....
Screwed (example): IPPPBBPPPPPPBBPPP..

Well, you can use VBVPatcher on your ffvfw encodes, and then the MPEG file will be "branded" compliant.
But the way I see it, I find QuEnc much more simpler and flexible than ffvww, and I'm getting extremely good results.
I think we will all be using QuEnc more often

-kwag

@kwag
I agree with you, QuEnc is very good. I would like though to have all the libavcodec options out to play with them. I hope it will be in 1.0 release.
I know that QuEnc has a very good quality right now but I'm targeted on small resolution (352x28 and any artifact is more annoying than with full resolution (I have double size blocks on TV screen). So thats why I am very picky and since the speed of ffvfw is acceptable at 352x288 (25-30 fps) and VBV issue is ignored by my player, you know what I choose for the moment. I am sure that QuEnc could do a better job with the right settings but we still have not access to them.
marcellus

As I posted earlier; my encode of Shrek looks amazing! Even though I encoded it in MPEG-2 and SVCD resolution (480x480). Have anyone tried QuEnc with MPEG-1 output? Results

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AudioSlave

I did, and I also liked the MPEG-2 results better. Seems the encoder creates better results at MPEG-2.

-kwag

Yes. And another thing that's great about being able to encode good looking KSVCD's (MPEG-2) is that they're playable almost everywhere - on almost everybody's stand alone DVD players Even at my parents' house...

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AudioSlave

From what I understand it's best to use a closed GOP?
The setting I used for Shrek (NTSC) were the following:

Main window
* MPEG-2
* Use VBR - Checked
* High Quality - Checked
* Use Trellis Quant - Checked (But have no clue what this is )
Advanced options
* Force Closed GOP - Checked
* Use KVCD "Notch" Matrix - Checked
* GOP Size=18
* Max B-Frames=2
* 4:3 Aspect Ratio

Then, in the main window, I simply pasted the average bitrate I got from CalcuMatic and clicked Encode. Ta-da!
Please, inform me if I should use some other settings for my encodes.

Question: Can we use the GOP from the TMPEnc templates with QuEnc (PAL=25, NTSC=30, Film=24)?

@Kwag
Very nice quality on your Red Planet clip

EDIT: If you use HybridFuPP to encode your movies - Take the average bitrate from CalcuMatic and multiply it by 1.05

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AudioSlave

Well, my test got a very wierd result. I asked to encode 480x480 at 976 kbps, and used trellis, 2 pass VBR, Notch, GOP 18.
The file came out at 725 kbps. I opened it with BitrateViewer, and The Q line was constant at 2.67. I have the same file encoded with CCE at "real" 976 kbps, but still could not do a side by side comparisson. I opened the encoded file and it looked good, but in 17" monitor most stuff do.

You got them all right Yes, but I think this encoder doesn't like longer GOPs very much. Stick to 15(PAL) or 18(NTSC) Thanks No. It shouldn't make any difference, because the encoder is trying to maintain average bitrate.
BTW, what was your final file size on "Shrek", compared to the size wanted by CalcuMatic

-kwag

kwag wrote Actually, when I first encoded Shrek (my first try with QuEnc) with the average bitrate from CalcuMatic the final vide file got about 40 MB too small. But then I multiplied the avg.bitr. by 1.05 and the final movie - muxed - is 806 MB, perfect!

Note: When I use Incredible's Slicer routine to predict I also have to multiply the wanted sample size by 1.05 to get the final encode right.

EDIT: This is when I use HybridFuPP to encode the DVD's

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AudioSlave

Wait a minute....
So the average bitrate is not the average bitrate that the movie will be encoded?