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How to slow down an effect? [ANSWER]

Posted: Thu, 23rd Feb 2006, 8:48pm

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FXhomer1369

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Hi everybody, I would like to know, how can I slow an object???. First of all I've tried to move both the extremities on left and on the right, but I can't, as you can see in this picture, probably because it's a fx preset:
http://img479.imageshack.us/img479/3567/immagine54rr.jpg
Second I tried to slow an alam dv plug-in, and the effect worked, but, it' stranger.
Posted: Thu, 23rd Feb 2006, 9:35pm

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Oeyvind

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I think you'll need to use the crop-tool. (Not sure if that's what it's called, but it's next to the speed-tool you just used). Then you have to move the keyframes to match the length of the effect. Hope that works for you! wink

Oeyvind
Posted: Fri, 24th Feb 2006, 5:52am

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Wizard

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If this were a video you were trying to alter the play rate of, you would have selected the correct tool. However, because the object in your timeline you are trying to use that tool on is an effects engine, Oeyvind is correct in suggesting the crop tool, and the repositioning of the key frames. Reason being, the speed tool is not intended for use on effects, and is used only for play rate manipulation.

With this in mind, you could render the effect on a black background, and import it as stock footage. This would allow you to make use of the speed tool to alter the play rate, just as any other media. Although this method is some what more involved than Oeyvind's suggestion, you may find it works better when dealing with presets that contain more key frames, or presets that have a more complicated animation. It may also give you more precise control of the speed.

I have tried Oeyvind's suggestion in the past, and it will work just fine for this purpose, you simply need to play with the small amount of key frames there are, until you find what works best with your footage.

Good luck.
Wizard.
Posted: Fri, 24th Feb 2006, 10:19am

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Cogz

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Yes, as Wizard and Oeyvind have said, you need to move the keyframes. I suspect that the effect moves between say keyframe 1 and keyframe 10, and the movement is tweened between them. If you select keyframe 10, and drag is out further, then the movement will happen over a larger amount of frames, hence it'll appear slower.

frames
[1]----------------[10]
[1]-----------------------------------------[20]

Taking the same start and finish positions, its quite clear that over 20 frames, the object will move slower than it would over only 10 frames.
Posted: Fri, 24th Feb 2006, 5:16pm

Post 5 of 13

FXhomer1369

Force: 200 | Joined: 27th Jan 2006 | Posts: 46

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Oeyvind wrote:

I think you'll need to use the crop-tool. (Not sure if that's what it's called, but it's next to the speed-tool you just used). Then you have to move the keyframes to match the length of the effect. Hope that works for you! wink

Oeyvind
But it is or it is not crop-tool used to extend the effect to other frames???

Cogz wrote:

Yes, as Wizard and Oeyvind have said, you need to move the keyframes. I suspect that the effect moves between say keyframe 1 and keyframe 10, and the movement is tweened between them. If you select keyframe 10, and drag is out further, then the movement will happen over a larger amount of frames, hence it'll appear slower.

frames
[1]----------------[10]
[1]-----------------------------------------[20]

Taking the same start and finish positions, its quite clear that over 20 frames, the object will move slower than it would over only 10 frames.
This is maybe just with alam dv plug-in, not with fx preset.
p.s could Wizard let me see a photo guide of his hint???

Last edited Fri, 24th Feb 2006, 5:42pm; edited 1 times in total.

Posted: Sat, 25th Feb 2006, 12:52am

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Wizard

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Rating: +1

FXhomer1369 wrote:

But it is or it is not crop-tool used to extend the effect to other frames???
Yes, the crop tool is used to extend the length of an effect, so that more can happen. That tool alone will not slow the effect down. However, with the guide/explanation given by Cogz, you can see that using the crop tool, combined with moving the key frames further apart, will alter the effect enough to give it the appearance of slower motion.

I am not entirely sure if I can elaborate much on Cogz explanation at this point, so I hope you have some understanding of what he is trying to say. All I can really say is if you have an object key framed to move from one side of your footage to the other, and a time frame of five frames for this to happen, the object will move rather quickly, and the object will have finished its animation at the end of the five frames.

If you have an object move in the exact same manner across the screen, but allow for it to do so in 20 frames, the object will move much slower, as it has more time to finish its animation, because it must end in twenty frames, as appose to five. I hope that is clear; if it is not, all I can say is try it out, and you should then be able to see why the amount of frames between the start and end points makes a difference.

FXhomer1369 wrote:

p.s could Wizard let me see a photo guide of his hint???
If you are speaking of my alternative method I suggested above, I would be happy to guide you through what I meant, and possibly illustrate a few key steps. Before I begin, I just want to say that this method was really only suggested for certain presets that have very complicated key frames or animation, and you would most likely be better off trying to extend the effect, and move the key frames to match the changes you made to the length, and you should probably give that a try for a small effect such as this.

The reason I suggest rendering the effect on a black background is because once you have done so, you can import it back into your program. Once you import it into your program, you can place it on your timeline, just like you do when using old plug-ins. Because the speed tool is used for media only, and not effects, you would now be able to use the speed tool on the newly rendered media, and slow it down; which you could not do when it was still an effects engine.

The first thing you need to do is to place the effect on your canvas. Some effects need to be resized, or positioned so that none of the effect is "cut out" when rendered. For this laser effect though, it is animated to begin just off the right of your canvas, enter, and then exit through the left, so no repositioning is needed. You now need to make sure the back ground footage is all black, so that once you have rendered your effect, and have imported it back into EffectsLab the back ground will be removed, and only the effect will remain.

You do not have to import a movie with all black frames to do this. Simply turn your footage off using the "toggle" button, located in your timeline. Be sure that you are doing this to your back ground footage, and not your effect.

Footage toggle button:

(Green is footage on, red is footage off.)

Now that you have your effect on the canvas, and have toggled your footage off, you need to set your out point, so that when you render, you render the effect, and not the entire length of your footage, which would be quite a waste of time, and not to mention the file size would be unnecessarily large. One way of setting your out point is to position the "play head" to the frame just after your effect ends, and press "O", for out, on your key board.

Setting out point:


I assume you have rendered a movie before, so I will not go into specific detail on that. Render your movie now. Just so you know where you should be at this point, you should have a video with a black background, and five frames of your effect, plus the one frame I had you render on. I am also assuming that you have imported media before, as I have instructed you on how to do so in the past.

Import your media, place it on your time line, and you can now use the speed tool like it was intended to be used, on media and not effects. You can re-size, or animate it differently if you wish by selecting "Animation" found under the object title in your time line.

There you have it, a more descriptive idea of what I meant. Although I feel the pictures are some what not needed this time, I hope they did in fact serve to help you. If you have any other questions, please feel free to ask.

Give it a try.
Wizard.
Posted: Mon, 6th Mar 2006, 7:12pm

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FXhomer1369

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Thanks Wizard, I try it. smile
Posted: Wed, 29th Mar 2006, 8:07am

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FXhomer1369

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Does someone know how to make the ghost effect to a person?
Posted: Wed, 29th Mar 2006, 8:56am

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Oeyvind

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FXhomer1369 wrote:

Does someone know how to make the ghost effect to a person?
Yap, just lock your camera, film the environment without the actors, and then have the camera at the exact same position and let the actors preform their part. Then take the shot with the actors and make it as transparent as you wish. Easy as that!

Allthough to make it even better you should give them some glow. If you really want it to look good, film the ghost-actors in front of a greenscreen. You will then have more options to alter the look of the ghost. If you do it this way, I recommend to give them some glow, low saturation, a blue tint, and perhaps a ghost trail... Good luck!

Oeyvind
Posted: Thu, 30th Mar 2006, 7:06pm

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FXhomer1369

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Thanks, Now I try to do it smile.
Posted: Thu, 30th Mar 2006, 7:48pm

Post 11 of 13

FXhomer1369

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I have some problems:
When I copy the object and I move it forward, I have not the move effect (or clone effect), and when I should push properties and change composite mode from normal to add, this one there isn't, maybe if I click on the name of the movie I find composite, but I can change it from normal to add. There isn't even the blur angle.
Posted: Fri, 31st Mar 2006, 8:40am

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Wizard

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FXhomer1369 wrote:

When I copy the object and I move it forward, I have not the move effect (or clone effect), and when I should push properties and change composite mode from normal to add, this one there isn't, maybe if I click on the name of the movie I find composite, but I can change it from normal to add.
I must admit, I am having a small degree of difficulty understanding exactly what it is you are doing, and the precise problem you are encountering, but I will still give it my best attempt at helping you out here.

From what I gather, you are attempting to achieve the effect from the ghost tutorial written by Arktic. You are copying your original media in your time line, in order to create the trail behind your actor, and pasting it as a second object. You are then trying to change the composite mode from "normal" to "add", by searching in the media properties.

Before I continue, I just want to make it very clear that you will not find these options the same way that is shown in Arktic's tutorial. That tutorial is intended for Chromanator, which has a very different interface than that of EffectsLab.

To locate the composite options in EffectsLab, you must click the name of the object in your timeline, or click the "Attributes" tab located at the top right of the program, when you are selected on the media. I have gathered that you did indeed do this, but again, I want to make certain.

At this point it would appear that you are able to find the composite options under your media attributes, but you are unable to alter it from "Normal". If you recall, you were informed in another topic that EffectsLab does not support all of the composite features that are available in the other FXhome applications, which are intended for composing purposes.

This is most likely why you are experiencing difficulties; EffectsLab does not allow you to change the composite mode of media that is opened upon start up (you can not change the blend mode of the back ground platte of a project). This is even so if you were to copy the back ground platte, and paste it above the original (as the second object). VisionLab HD on the other hand, does allow you to do this.

To work around this, you can open a blank time line, and import your media using the "Import media" feature. You should then have the two composite options "Screen", and "Add".

Another method is to open a project by selecting "New project-select movie", then deleting the movie out of your time line, and your media browser, then importing the desired media just as you would for a blank time line. This would effectively be the same thing, but you do not have to select the scan method, and other media properties.

FXhomer1369 wrote:

There isn't even the blur angle.
The blur angle filter is located under "Grade". Locate that by selecting "grade" found under the desired object heading in your timeline, and then scrolling through the list of grade filters to the right, known as your "filter browser".

I hope none of this is unclear to you. If I misinterpreted what you were asking, I apologize, and will try my best to address the actual issue.

Happy trails.
Wizard.
Posted: Sun, 2nd Apr 2006, 5:23pm

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FXhomer1369

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Thanks Wizard, now I check.