NEW Guides and AmvApp BETA

[Tiiscool]

Hello,

I would like to have an overview of the DAR and PAR in the new Guide
Are the numbers right ?

Code: Select all

                TV/DVD				           Monitor	
                            4:3								
NTSC	720 x 480					       	  640 x 480
PAL	 720 x 576					       	  768 x 576
                           16:9								
NTSC	720 x 480		 960 x 480	   	  853 x 480
PAL	 720 x 576		1152 x 576	  	  1024 x 576
					    (stretched)			

                           Pictures								
                            4:3								
NTSC	720 x 540 (528)		rezise to	   720 x 480
PAL	 768 x 576				rezise to	   720 x 576
                           16:9								
NTSC	848 x 480				rezise to	   720 x 480
PAL	1024 x 576				rezise to	   720 x 576

Best regards,
Ti

[Beefy_Suavo]

I looked through the Pre-Processing, Post Production, and Online Video Distribution sections and I did not see any mention of adjusting the brightness and contrast of the video using AVIsynth.

Would this be useful for the guide, or would adjusting the brightness and contrast of the video be better to do during playback in the user's video player?

[angelx03]

Uhhh, I thought that's already listed here:

http://www.animemusicvideos.org/guides/ ... html#color

[Beefy_Suavo]

Uhhh, I thought that's already listed here:

http://www.animemusicvideos.org/guides/ ... html#color

D'oh.

[Beefy_Suavo]

While I'm busy making a fool of myself...

Tweak also has some other parameters for things like brightness and contrast, but I strongly recommend against using these. Instead, you should use levels.

Maybe include a short explanation for why Levels should be used for adjusting brightness and contrast? The AVIsynth guide for Levels suggests to adjust them using Tweak.

For adjusting brightness or contrast it is better to use Tweak or ColorYUV, because Levels also changes the chroma of the clip.

[Zarxrax]

While I'm busy making a fool of myself...

Tweak also has some other parameters for things like brightness and contrast, but I strongly recommend against using these. Instead, you should use levels.

Maybe include a short explanation for why Levels should be used for adjusting brightness and contrast? The AVIsynth guide for Levels suggests to adjust them using Tweak.

For adjusting brightness or contrast it is better to use Tweak or ColorYUV, because Levels also changes the chroma of the clip.

I assume when the avisynth manual says that, they mean it in the literal sense of actually changing brightness and contrast. Brightness and contrast adjustments mean very specific things, and are usually NOT what you intend to adjust on your video. Brightness and Contrast are terms that everyone is very familiar with, but few people really understand them.

Let's take Brightness for example. Adjusting the brightness is basically the equivalent of taking a solid white or solid black image and overlaying it on top of your video. It doesn't really make your video "brighter" or "darker" according to what most people's perception's are--it merely makes it "more white" or "more black". A basic "contrast" control has similar problems. By using Levels, we can make the image look more visually darker or lighter, not simply whiter or blacker.

Here are a few links with some more information about levels, hope this helps.
http://www.cambridgeincolour.com/tutorials/levels.htm
http://www.biorust.com/tutorials/detail/198/en/

[psyimn]

I think I did something wrong installing the AMVappBeta. After installing the AMVapp, I tried to run VirtualDubMod, only it won't open. It's installed, it just won't open. I even re-installed the app. Any suggestions?

[Scintilla]

First thing to try: Move all your AVISynth plugins to some folder that's NOT your default plugins folder, and see if VDubMod works. If it does, move the plugins back one at a time and test VDubMod after each one until you find the one that breaks it.

[psyimn]

Thanks Scintilla. That fixed my problem. It was the setmemorymax script that was causing the problem, and for the record, what does the "setmemorymax" script do specifically?

Thanks again.

[Zarxrax]

Thanks Scintilla. That fixed my problem. It was the setmemorymax script that was causing the problem, and for the record, what does the "setmemorymax" script do specifically?

Thanks again.

That's VERY odd. Could you please paste the contents of that setmemorymax script?
It just tells avisynth how much memory it should try to stay within.