Hello. I'm not experienced with xml, so I can't make my own efects.
Does anyone know where I can find more effects for Kdenlive?
I'm looking for a spiral rotation effect, some hue effects such as the rainbow effect in Windows Movie Maker.
The only hue effect kdenlive has does not change and you can only set it to one color.
I'm also looking for an effect that'll remove the background if the foreground is moving.
And an effect to reverse the video and audio.
And an effect to make black or a specific color transparent.
For instance if I have a video clip of an animated explosion but the background is black, I can put it on top of another video clip.
Please help. Thanks.

chrishvide wrote:Hello. I'm not experienced with xml, so I can't make my own efects.

This would not help you. They are not written in xml.

chrishvide wrote:I'm looking for a spiral rotation effect,

Look in the transitions section.

chrishvide wrote:some hue effects such as the rainbow effect in Windows Movie Maker.
The only hue effect kdenlive has does not change and you can only set it to one color.
I'm also looking for an effect that'll remove the background if the foreground is moving.

Can't help here.

chrishvide wrote:an effect to make black or a specific color transparent.

https://userbase.kde.org/Kdenlive/Manua ... lue_Screen

chrishvide wrote:I have a video clip of an animated explosion but the background is black, I can put it on top of another video clip.

For this you can use https://userbase.kde.org/Kdenlive/Manua ... ons/screen it works nicely for exactly this purpose.

chrishvide wrote:And an effect to reverse the video and audio.

reverse video with this
https://userbase.kde.org/Kdenlive/Manua ... verse_Clip

reverse audio with Audacity and import it back to Kdenlive

rainbow
https://userbase.kde.org/Kdenlive/Manua ... itions/Hue

for your spiral effect you might look at using https://userbase.kde.org/Kdenlive/Manua ... tions/Wipe and https://userbase.kde.org/Kdenlive/Manua ... _and_Shear in combo.

@ttguy thanks for your replies.
That hue effect is for single color only.
I could do frame by frame, but that's gonna take forever. Any suggestion?
And the spiral effect is transitions-only. Not for rotating a video. That's what I want. An effect that does spiral rotation.
The alpha blue screen effect doesn't seem to remove the black color fading from the other colors. It only removes the 100% black color if you know what I mean.

Also, is there a way of making these effects work under KDENLive?
http://www.thefxarchive.com/
Would've been nice if someone could create a plugin for kdenlive that'll "translate" these effects to kdenlive readable effects.
Those are xml files and should technically be possible to port over to kdenlive, right? If not, would it at least be possible to install the windows dependencies through Wine and somehow send that to Kdenlive? I know you can do that with VST files in LMMS (Linux multimedia studio), so it should be possible.

The alpha blue screen effect doesn't seem to remove the black color fading from the other colors. It only removes the 100% black color if you know what I mean.

Yeah chroma keying is difficult. You need a really good green screen that is even in colour and you need to light the scene so so that there are no shadows on the green screen - at least that is what I have found.

But for black backgrounds - like explosion footage that is out there - I used the "screen" transition.

You could also look at https://userbase.kde.org/Kdenlive/Manua ... _Selection which also does chroma keying. Play with the delta parameters to see if you can key out the background and leave the subjects in the picture.

But in either case if your footage has gradients of your key colour on your subjects you have a difficult time.

I don't know what effect you are looking for but the hue transition can create a rainbow type effect - check this out:



Maybe you are looking at the "effect" Hue Shift. I am talking about the "transition" Hue. These are two different things.

And the spiral effect is transitions-only. Not for rotating a video. That's what I want. An effect that does spiral rotation.

Did you read my post on what I said about that .

"for your spiral effect you might look at Wipe and Rotate_and_Shear in combo."

Did you try the combination of the two ?

Those are xml files and should technically be possible to port over to kdenlive, right? I

As I said. Kdenlive effects are not written in XML. So - no - it is not possible to do this.

The transitions are provided by the mlt project http://www.mltframework.org/bin/view/ML ... ransitions . So you need to write a mlt transition if you want to add a new transition to kdenlive.

Thanks for your help. I'l look into that.
But aren't the effects in XML?
If you go to /usr/share/kde4/apps/kdenlive/effects you can see for yourself that those are XML files.
So how do I port the effects over from WMM or how / where do I find more effects online?
I want more color effects
Like the rainbow effect they use in this youtube poop @ 0:09:
https://www.youtube.com/watch?v=DAPFfoc6-Zs
And use some cool water/wave effects here: https://www.youtube.com/watch?v=ipJdQTTZ56M
And I want to be able to remove a background if the foreground is moving.

Btw. By spiral effect, I mean like the one they use in this YouTube Poop @ 0:07: https://www.youtube.com/watch?v=5TaH8-6B5bU

Edit: The hue transition doesn't do anything.
How do I get different colors? I put the hue transition effect on the first video but nothing's happening.
Same with wipe. I have the latest stable (supported) version.
Besides. I thought transition meant between two videos. So how do I make the transition effects work on only one video?

chrishvide wrote:But aren't the effects in XML?
If you go to /usr/share/kde4/apps/kdenlive/effects you can see for yourself that those are XML files.

AFAIK, Kdenlive uses xml to build effect's user interface, not the effect itself.

chrishvide wrote:And use some cool water/wave effects here: https://www.youtube.com/watch?v=ipJdQTTZ56M

I can't see any "cool water/wave effect" there...
I only see ugly colours, but that's sure a matter of taste

hftom wrote:

chrishvide wrote:But aren't the effects in XML?
If you go to /usr/share/kde4/apps/kdenlive/effects you can see for yourself that those are XML files.

AFAIK, Kdenlive uses xml to build effect's user interface, not the effect itself.

That's what I suppose them to be, too.

I have written some more words about doubting answers of developers and the way of asking questions in open source projects and that kdenlive is quite mighty if you combine two or three of the given effects, but the forum stalled when I sent it in yesterday afternoon... Maybe it was better that way...

@chrisvide
Take a look at the files at the frei0r project: http://code.dyne.org/frei0r/tree/src/filter
That is the program code for all the frei0r effects, the files ending in .c are the programcode, e.g. http://code.dyne.org/frei0r/tree/src/fi ... ightness.c You do not need to understand what the code does, but the file size will show you, that an effect is not done with some hundred bytes of xml.

capslock wrote:

hftom wrote:@chrisvide
Take a look at the files at the frei0r project: http://code.dyne.org/frei0r/tree/src/filter
That is the program code for all the frei0r effects, the files ending in .c are the programcode, e.g. http://code.dyne.org/frei0r/tree/src/fi ... ightness.c You do not need to understand what the code does, but the file size will show you, that an effect is not done with some hundred bytes of xml.

Sure. Thanks.
So are there any effects available on the web that I can implement to kdenlive? Referring to my video examples mentioned above.

>So are there any effects available on the web that I can implement to kdenlive?
If you mean implement in sense of plugging in, the answer is no.
If you mean implement in sense of writing code and if you can program c or c++ the answer is yes.

As far as I know, frei0or plugins is the only supported effects bundle in kdenlive. And my understanding is that some more effects come with melt and maybe some are implemented in kdenlive itself. kdenlive is not a program like AfterEffects and that's why it brings some effects that can be quite powerful if put in combination. I bet that many of the sequences you pointed to are also a combination of several effects and not just only one that does all the fancy things to the pictures.