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In this how-to I will replace my shadow with another one by applying a mask on the first one. Masking permit you to isolate a specific region of a picture for special treatment.

While I’m smoking my shadow is drinking water because it is dehydrated.

This little video was inspired to me by a photo from Clarisse a nice girl of the Netlog social network:

You should give too much freedom to your shadow Clarisse.

“You should not give too much freedom to your shadow” Clarisse.

oneTo make this effect I had to do all the sequences in only one take.

Why? Because the use of mask for these sort of videos needs same weather, same light, same background, same camera position (or same move) etc …

twoYou already know: Open Cinelerra, prepare your project (size, framerate, color model etc) in Settings -> Format according to the media you will use or the destination of your final work.

When done, load the video you want to modify on the first track of the timeline.

The video I want to modify: my shadow is smoking like me.

The video I want to modify: my shadow is smoking just like me.

threeIf you apply a mask right now on your video it will appear like a black hole drawn on the picture.

How to draw a mask:

  • In the compositor window click on the Edit mask tool . The mouse pointer change for a cross pointer that indicate you can draw right on the picture.
  • Use the splines to make a shape that surround the subject(s) you want to eliminate. There you guess that’s where this technique can become arduous: if the subject is moving you will have to follow his movement by modifying the mask shape or moving it (with Ctrl Alt Click).
  • The Show tool info button (question mark button) open a dialogue box and give you more options to change the mask:  mode, opacity, smoothness of the edges… I let you discover them.
The mask appear like a black hole in the picture. Substract alpha mode eliminate the subject, multiply alpha mode isolate the background of the subject.

The mask appear like a black hole in the picture. Substract alpha mode eliminate the subject, multiply alpha mode isolate the background of the subject.

fourNow you can load the video containing the new subject in a track below your first track. That’s all!

In fact steps 3 and 4 can be inverted but well it’s an how-to.

Last word: Masks are keyframable; that means you can change their attributes along the time using keyframes (which are viewable with View -> Mask).

fiveThere are different methods to isolate a specific region of a picture. It is possible for example to select an object by it’s color. Drawing a mask with splines is just one of them.

Masking is also used to blur someone’s face for example, to emphasis a character by bluring his surroundings, to make clones, or other artistic effects.

Another use of masking with Cinelerra.

Another use of masking with Cinelerra.

questionWhat about a contest to imitate this sequence of Lucky luck cartoon?:

What about a contest?

What about a contest?

starOther videos made with Cinelerra playing with masks:

Being by myself from devapea

Cinelerra masking from Tatucik

Mi clon y yo from pedroIramon

Core 2 duo from zoelans

Clones from strongpiggie

Cinelerra Magic from Kris Czerniawski

Intro Guerrilla y nuevos movimientos sociales from Victor Zamora

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I was trying to figure out how to make a “dream effect” with Cinelerra – you know this effect used by filmmakers to show that a character is dreaming or to give sort of beauty to a sequence – … so I shot a baby hummingbird (with my camcorder). Believe me or not; this effect is also called “instant sex” trick.

seems like I made an excessive use of the blur effect 😐

oneOpen Cinelerra. Prepare your project (size, framerate, color model etc) in Settings -> Format according to the media you will use or the destination of your final work.

When done, load the video you want to modify twice on the timeline just  like in the following screenshot:

the part of the video you want to modify must be loaded twice

The part of the video you want to modify must be loaded twice.

twoIn the second track,  insert a brightness/contrast effect and a blur one by dragging/dropping them from the resources window to the timeline.

We should insert them in this order: brightness/contrast effect on top of blur effect. Right click on the effect bar and move them top or down.

Click on the little magnifying glass to change the values of the effects.

For this how-to I chose these values:

– brightness: -0.0600   contrast: 1.800

– blur: 20

Add the effect in this order. You can also deinterlace your video with the deinterlace effect.

Add effects and deinterlace your video (if needed) with the deinterlace effect.

threeIn the previous screenshot, as you can see, I deinterlaced my video (with the deinterlace effect).

If you use a progressive file format you can go directly to the forth step of this how-to.

Two links to understand what (de)interlacing is ==>100fps.com hardware.info (see the picture).

Cinelerra offers different deinterlace filters. The Bob & Weave one seems to be commonly used.

fourNow, Ladies and Gentlemen, the special ingredient:

For the first track, change the overlay mode to Addition and adjust the opacity to 50% for example.

fiveThat’s all Folks!

Change brightness/contrast, blur, opacity values to get the effect you want to make.

Go in the wild to shoot some birds…  and don’t forget to warm your balance.

Note1: Bad new; overlay modes don’t seem to be keyframable :(.

Note2: I’m not sure if this is the better way to make this effect but I’m not unsatisfied of the result. If you have other methods I would like to test them.

starOther how-tos playing with overlay mode:

Vignetting-in-cinelerra from M4rci.

Cinelerra: efecto lapiz from facilware.com

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Ken Burns effect consist in zooming and/or panning in an image. This effect give the possibility to take maximum advantage of a single still picture. Note that this picture should be large enough.

Let’s take a big image on the internet.

We find really nice photos on flickr! Look this one I found ==> panorama (original size). It was made by Jasmin Cormier and released under creative commons license.

Now we prepare our project and load the image. Settings -> Format : 720×576, 25 fps. Then Settings -> Preferences -> Recording tab. In “Video in” set the import images duration to 10 seconds for example. My total project actually last 49 seconds due to the sound track I chose. As usual this part is up to you considering the effect you want to create. Now we load the file: File -> Load files. We choose the image and take Replace current project as insertion strategy. OK. The image is now right on the timeline with a duration of 10 seconds. Let’s give it a longer duration (50 s for example) by using the little arrow that appear at the edge of the picture in the video track. Done? If done by playing the timeline you will see only one picture that doesn’t move during 50s. Last thing: activate the Generate keyframes while tweeking button 

OK. Let’s give that some movement! To accomplish this mission we will use the camera tool and keyframing. Keyframing? Yes. It’s the operation that consist in choosing two different events at two points of the time and letting the software calculate the intermediate events by himself. Clear? No? Just follow me:

  • Go at the beginning of you project (ie time = 00.00.000). In the compositor window, activate the camera tool (Adjust camera automation)… and now the tool Info (the question mark button). In the dialogue box that appear enter these values: X:518.9438 , Y:135.6880 , Z:3.0000. This will zoom on the water-closet and make it appear at the bottom right of the screen.
  • In the timeline window use now the manual go to tool to go the instant of time 7s. Then in the camera tool dialogue box enter these values : X:497.9438 , Y:-117.3120 , Z: 2.5000. The compositor window shows now the paper.
  • Let’s do the same at the time 13s with the following values: X:-20.0562 , Y:-128.3120 , Z:2.8000.
  • Done? Now go to the beginning of your project and play the whole thing.
  • You got it.

Well this project is a bit complex to continue this tuto till the end. You know now how to use the camera tool and you are aware of what keyframing is. Almost all effects in Cinelerra are keyframable.

Additional informations: You can view the keyframes you created and the curves symbolising the camera with View –> Camera X,Y or Z. For a comfortable view click on the Fit all autos to display button. Here is an extract of my project:

Good job. Add some other effects to ameliorate the image. Why not some blurs?

You’re done.

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Presentation (slideshow) is the easiest way to begin to learn Cinelerra. Let’s see.

Some photos of my country from Arnaud Bertrande’s point of view.

First let’s prepare our project. Launch Cinelerra. Then Settings -> Preferences -> Recording tab. In “Video in” set the import images duration to 2 seconds for example. This means that the images are imported with a duration of 2 seconds. You will be able to give them the duration you wish after. Now let’s define the format of our project. Settings -> Format. This part is up to you. It depends on what you want to do with your final video (internet video, dvd, archiving, hd video etc).

Load the images. Files -> Load files… Browse the directories and select the images you want to load. Cinelerra can use media directly from a dvd-driver, an external hard disk, an usb-drive … You can either load a single image (with a duration of 2 seconds) or several.  Choose the Insertion strategy and apply.

Notes on Insertion strategy:

  • Replace current project delete all you have on the timeline and load the pictures in different tracks. One picture per track.
  • Replace current project and concatenate tracks delete what you have on the timeline and load the pictures in one single track.
  • Append in new tracks keep what you have on the timeline and load the pictures in new tracks.
  • Concatenate to existing tracks paste the pictures in existing tracks
  • Paste at insertion point load the files where the insertion point (ie the vertical line that move on teh timeline) is.
  • With Create new resources only the pictures don’t appear on the timeline. They are in the media folder in the Resources window.

We will use the second option for this project: Replace current project and concatenate tracks. We could equally choose Concatenate to existing tracks since we have nothing loaded yet.

 

OK. Our images are now lying on the timeline. Let’s give them the duration we want. Some pictures can last 3 seconds, others just a fraction. For that we go on the edge of each image in the timeline window (a little horizontal arrow appear), left click, drag to the right or to the left. You’re done.

 

Images are loaded. Durations are set. Let’s add some transitions between each pictures. Dissolve transition (Resources window -> Video transition) is the most common transition but Cinelerra give the ability to create your own transition. (see ==> http://www.assistcg.com/index.php/component/content/article/63.html). So just drag a transition and drop it at each junction. Right click on the transition icon to adjust the length and… Voila!

 

Add effects (why not a gradient effect?), an audio track. Render the whole project (Files -> Render). That’s all.

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