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Making a looping video
Difficulty: Easy

To explain we are going to use the scenario that an effect of smoke blowing across an image is required within a blipp.
First thing to do would be to source the video of smoke which we can then turn into an alpha mask to be used over an image as a texture. Go to YouTube and search for a smoke effect and select one which you think will work in the image you are trying to create.

For example http://www.youtube.com/watch?v=m8wGvjB70JM . Then use an application such as iLivid to capture the video and download. Once you have this video source it needs to be opened in Photoshop. Use the timeline to scrub over the video and find a suitable start point of the clip. Then split the clip there (right click and select “split clip”):

Then select the beginning clip (left click on it) and hit delete to remove. Do the same for the end of the clip so you now have the complete effect clip.

Now you need to find a suitable point to split the clip, this will become the point at which the loop is created so be careful how this point is selected and try to find somewhere that does not have too many differences going on from one frame to the next. In the example case selected it is around 5 seconds in. Now again split the clip at this position.

Now select the first part of the clip (the new bit you created) and drag this outside of the video group so it becomes a separate layer in the video.

Now move this new layer to the end of the clip.

This now means that the end frame of the video is the natural frame before the new beginning of the clip. It means you lose out on the overall length of the movie by the amount into the clip which you decided was the best place to do the first split, which is another reason to take care when selecting this point.

Now create a new black & white adjustment layer across the whole movie to ensure we are only dealing with these two colours as needed in an alpha mask.

Now we need to fade from one clip to the other use a tween on opacity from 0 to 100. This does not have to be the full length of the second clip, needs to be worked on and the best area and position chosen.

Now you have the movie pretty much ready to export and use, however it would be normal to have a border around this, so add another solid colour overlay and then edit the mask using the solid colour to transparent selected on the gradient tool and then place gradients around the edges of the movie to create the fade around the central effect.

Now use file/export/render video to create the exported .mp4 file.This can then be converted into images as seen earlier in this document.