Converting FPS

[Kawatta-kun]

First of all, does VirtualDub, when compressing, maintain the original FPS of the video?
It seems to me that he does, dunno.

How can I change it?

Another.
If it isn't advisable to change it, does masking works on 23,976fps (cause or is it 25 or 30, no ',000' there)? Cause that is mostly why I change it. And cause I like to maintain my vids PAL (25fps).

[Mister Hatt]

Why should it? You should be using avisynth anyway so vdub will use whatever you've told it to. You can change the framerate either in your avisynth source script (easymodo) or in the video menu in vdub (retardmodo).

I have no idea what you are talking about by masking and it seems neither do you.

[Kawatta-kun]

I can't explain it in english dude, kay?

What is the script?

[Enigma]

Text file with Avisynth commands.

[Phantasmagoriat]

First of all, does VirtualDub, when compressing, maintain the original FPS of the video?

yes vdub should keep the input fps. However, depending on your method of removing interlacing, you may end up with a different final fps.
ex) [29.97].tfm().tdecimate() = [23.976]

I can't explain it in english dude, kay?

English sucks. I leik piktuors
http://www.animemusicvideos.org/forum/v ... 1&t=101821 (look to the part on the right side.)

How can I change it?

Code: Select all

changfps()
assumefps()
convertfps()
tdecimate()
mvtools
... etc... 

There are a number of commands for changing the framerate with avisynth, and if you want to know the differences, you'll have to read their respective documentation floating around on the internet. As a word of caution, assumefps() literally speeds up/down your footage to get the desired framerate. You may or may not want this in an AMV. Maybe for a fast action video, but usually not. If possible it's generally best to use the original fps of the animation, which is sometimes different than what's on the DVD. Most animation is 23.976fps.

does masking works on 23,976fps (cause or is it 25 or 30, no ',000' there)? Cause that is mostly why I change it. And cause I like to maintain my vids PAL (25fps).

?...regardless: in terms of masking, any framerate should work as long as the following framerates match:

• source fps
• timeline fps
• export fps

This has always been the key to frame-accurate editing, which is extremely important for masking.


Lastly, (and maybe this relates to your question), I know some people that use 23.98fps instead of 23.976 because some programs don't support the last digit.


hope this helps

[BasharOfTheAges]

Most animation is 23.976fps.

Really? I thought most animation was about half that - what with all the duplicate frames and whatnot.

[mirkosp]

Pans and zooms and other stuff that is automated by the pc is done at 23.976 generally, though. Well, aside for the stuff actually done at 60i...

[Kawatta-kun]

And I thought most of them was at 25fps ou 30 x)

Thanks, it helps a lot ^^ will test later!

[Phantasmagoriat]

Most animation is 23.976fps.

Really? I thought most animation was about half that - what with all the duplicate frames and whatnot.

wut mirko said. It's a blend, especially when using CGI (which sometimes bothers me seeing something so fluid in the midst of regular animation...)
So yeah, generally you are right about the animation itself being less. I don't think the animators would want to draw all those frames manually

And I thought most of them was at 25fps ou 30 x)

This is a common misconception amongst AMVers since that is what it says on the DVDs. Usually, companies convert to NTSC(29.97) or PAL(25.00) to meet DVD standards. So they will do a number of crazy things to the footage to meet those standards. This is why creating AMVs can sometimes be a challenge, since you usually want to reverse all of that. It's like a puzzle