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-   -   Do divx settings affect mpeg output? (http://www.digitalfaq.com/archives/encode/5524-divx-settings-affect.html)

Dialhot 09-15-2003 05:44 PM

Quote:

Originally Posted by vmesquita
How do I enable post-processing during decoding in XVid? I was trying to do that changing XVid settings during playback, but I guess I was only changing DirectShow Decoder properties...
[]'s
VMesquita

Grrrrr.... Vmesquita, Xvid codec is a CODEC. A codec can't be a directshow filter at the same time. They aren't called in the same order by Windows !

If you do not see the modification is probably because they can't be changed on the fly. You have to restart the player to take in account the new settings.

vmesquita 09-15-2003 05:49 PM

Quote:

Originally Posted by Dialhot
Grrrrr.... Vmesquita, Xvid codec is a CODEC. A codec can't be a directshow filter at the same time. They aren't called in the same order by Windows !

If you do not see the modification is probably because they can't be changed on the fly. You have to restart the player to take in account the new settings.

Yes, like I said, I now realized that. But the question remains: how do I change XVid codec post-processing settings? How exactly you accomplish that? :?

[]'s
VMesquita

Dialhot 09-15-2003 05:58 PM

Didn't you find them in the configuration box of Xvid ?
That is in the middle of the box, in a area called : post-processing :-)

Or are you saying you do not know how to access to this box ?

vmesquita 09-15-2003 06:27 PM

Quote:

Originally Posted by Dialhot
Didn't you find them in the configuration box of Xvid ?
That is in the middle of the box, in a area called : post-processing

Or are you saying you do not know how to access to this box ?

Yes! I have no idea about how to access this box. I know how to change this settings when playing a movie, but of course, this way I am changing only the directshow filter options. Do I have to run any specific file? What would be?

PS: I also tried changing in VirtualDub but at least my XVid has no "Post-processing" box. What XVid version are you using, maybe the problem lies here... I am using the latest Nic's build.

[]'s
VMesquita

Dialhot 09-15-2003 06:53 PM

Quote:

Originally Posted by vmesquita
I know how to change this settings when playing a movie, but of course, this way I am changing only the directshow filter options.

NO !
There is NO directshow filter options in Xvid configuration box because Xvid is a CODEC ! I can't be more clear that this !

The title of this box is very clear : XVID MPEG4 VIDEO CODEC
In this box you have 4 parts :
- a slider for brightness
- 6 box for post processing (horiz deblock Y - Vert Deblock Y - Horiz Deblock C - Vert Deblock C - Dering Y - Dering C)
- 2 boxes to enter threshold of the PP (default 20 and 40)
- an area where you can force the codec to output in YV12
(how did you force it if you can't open this box ?)

I can't post a screenshot of the configuration box but I can send it to you by mail. This way we will see if you are talking about the same thing I do.

Quote:

Do I have to run any specific file? What would be?
I access this box while playing via zoomplayer or externally grant to the soft DXman (www.analogx.com)

Quote:

What XVid version are you using, maybe the problem lies here... I am using the latest Nic's build.
I do not have the slightest idea. I use the one included in ACE codec pack but nowhere is indicated which version it is.

Dialhot 09-15-2003 06:58 PM

Quote:

Originally Posted by Boulder
There's two different places where you can set the postprocessing. One is in the codec settings in the screen you use when you're encoding something to XviD, the other's available when you play XviD material in some media player. I'm not sure which one is used with AVISource.

By definition : what is included in the encoder part of a codec can't be used by avisynth that call the decoder part of the soft ;-)

As Vmesquita thought, the problem is probably in Xvid version (there are more than one version unfortunally).

vmesquita 09-15-2003 07:05 PM

Dialhot,

What you described is exactly what I did, and it made no effect in CCE. In changed properties while playing in Media Player, closed the player and reloaded to see if the post-processing options stand. And they did. The box is exactly with the options you described.
So I encoded with all of them enabled and with all of them disabled and got exacly the same output in bytes, using the same Q factor.
I know it makes no sense that CCE and TMpgEnc gives different results, but I am only reporting the result of my test. I plan on doing it again with TmpgEnc just for checking. :?

[]'s
VMesquita

Dialhot 09-15-2003 07:13 PM

Quote:

Originally Posted by vmesquita
I know it makes no sense that CCE and TMpgEnc gives different results, but I am only reporting the result of my test. I plan on doing it again with TmpgEnc just for checking. :?

So its what you said some days ago. But like you I really don't understand how CCE works to obtain same result in both cases :?:

vmesquita 09-15-2003 07:15 PM

Dialhot,

Sorry but I think you're mistaken. I was just walking aroung XVid Nick's builds and found this:
http://nic.dnsalias.com/xvid.html

So as you see, you can download only the DirectShow Decoder, instead of the full codec. If that is possible and you would still be able to play XVid movies using the directshow decoder, then I guess your theory is wrong... :wink: It's like FFDShow which is a directshow filter and can be used to playback DivX and XVid content, without installing both codecs. But only with FFDshow installed (no DivX/Xvid) you can't use AVISource, altrough you can play content.

[]'s
VMesquita

Dialhot 09-15-2003 07:25 PM

I know what is a direct show filter, and I know about ffdshow (because i use it to test my avisynth script on the fly :-)).
I just didn't know there was a directshow filter existing of xvid ;-)

But I also know what is on my disc and I can tell you : it is the CODEC version of xvid. For instance, the field to force the output colorspace do have an effect into avisynth. If I change it I can see a difference in the hints given by the avs command "Info()". Can you check this point on your PC ?

By the way : do you have zoomplayer ? If yes you can see with it that codec and filters aren't called in the same place by windows : codec is called in first place, before the splitter. filters (like ffdshow or directvobsub) are called after the splitter and you can have more than one.

Note: How the hell do you manage to read Xvid video in avisynth if you do not have codec installed ? Avisource does not use directshow filters :!:


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