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Exporting video

From: Interactive Data Visualization with Processing

Video: Exporting video

If you've created a dynamic drawing in Processing, you may want to be able to save your results and export them as a movie that you can then save as a movie file and share with other people. Previously, to do this you needed to export the files and you needed to stitch them together in a video editing program like Premiere Pro or Final Cut. But Processing now has built in a special tool called MovieMaker that greatly facilitates this process. To do that, I'm going to use a sketch that I used on tracing the mouse just a few movies ago.

Exporting video

If you've created a dynamic drawing in Processing, you may want to be able to save your results and export them as a movie that you can then save as a movie file and share with other people. Previously, to do this you needed to export the files and you needed to stitch them together in a video editing program like Premiere Pro or Final Cut. But Processing now has built in a special tool called MovieMaker that greatly facilitates this process. To do that, I'm going to use a sketch that I used on tracing the mouse just a few movies ago.

This is the movie from chapter, the first one, about tracking the mouse. I'm just going to run the program right here, just for a few seconds, and then I'm going to quit it. What you'll see is I've added one important line, and it's this one down here. And what this line does is it saves a still image of the display window every time it goes through the loop. So that saveFrame is the function. And then what I've done here is I've given it a specific way that I want to save the frame. So first what I've done is I say I want it to create a folder called Frames.

That's what the first part is. And then the slash is I want it to go through and sequentially number every image that it puts in there with a four-digit number, so it will show as 0000, 0001, and so forth. Also, by putting the extension on there, .PNG, it saves them as PNG files, which are good for a lot of image processing. And so, if we go back to the Sketch folder-- let me just move this over for a second-- you'll see that now we have a Frames folder. And in there, the sketch didn't run for a very long.

It ran for 44 frames, and you can see how it fills up. Now, what I want it to do is take those and stitch them back into a single movie. I just come back to Processing and go to Tools, to MovieMaker. Now, if you're experiencing any technical difficulty in trying to get this open, if you get an error message, one possibility is that you check to see if there are any spaces in the file path that lead to the MovieMaker. Sometimes that can fix problems. With MovieMaker, all you need to do is get the folder that contains all of the frames. Now, if I go back to my Sketch folder and I just back up one step, there I've got my Frames folder, and I can just drag that and drop it in, and it populates with the file path.

Now, by default, it assumes that I'm doing a 640 x 480 movie, and that's usually a good choice. But that is not what I had in this particular case. You may recall I actually had it 600 pixels wide by 200 pixels tall. All I have to do is come right here and do the same size as the original. Also, my frame rate for the drawing was 10 frames per second. Now, normally, you would want to do faster than that, but I actually wanted to have some space up here between the dots, so I slowed it down on purpose. So, I'm going to return that to 10, just like that. Then I'll click Create Movie.

Actually, you do have the choice of dragging in a sound file now. If you're trying to do a movie, this will not be synchronized; they will just be independent coexisting files. So, I'm not going to worry about that one right now. But that is an option. I'm just going to click Create Movie, and now it's going to ask me where I want to put it and what I want to call it. Now, by default, it opens up the same folder that had the original Images folder in it. I'm going to call this one dots and press Save. What you see is I immediately get two files over on the right side, in the Sketch folder: one is a TMP file, and the other one is an actual QuickTime file.

If I double-click on that, I get a QuickTime window, and when I press play, I get a repeat of my sketch. Now, normally, for something like simply following a mouse around, this may not be the one that you want, but if you have created an animation in Processing, especially one that's responsive to the user input, then this would be a very good way to go. And it's certainly easier than having to take things to an external program like Final Cut or Adobe Premiere and try to put them together there. It's one of the big advantages, I find, in the Processing 2.0.

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This video is part of

Image for Interactive Data Visualization with Processing
Interactive Data Visualization with Processing

72 video lessons · 13950 viewers

Barton Poulson
Author

 
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  1. 3m 16s
    1. Welcome
      58s
    2. What you should know
      1m 22s
    3. Using the exercise files
      56s
  2. 11m 51s
    1. Overview of data visualization
      11m 51s
  3. 11m 53s
    1. Installing Processing
      3m 38s
    2. Overview of Processing
      4m 5s
    3. Exploring libraries
      4m 10s
  4. 1h 1m
    1. Basic setup
      7m 31s
    2. Drawing points
      4m 37s
    3. Drawing lines
      5m 6s
    4. Drawing ellipses and circles
      5m 24s
    5. Drawing arcs
      6m 54s
    6. Drawing rectangles and squares
      4m 58s
    7. Drawing quadrangles
      3m 25s
    8. Drawing triangles
      2m 55s
    9. Drawing polygons
      3m 37s
    10. Drawing simple curves
      4m 54s
    11. Drawing complex curves
      6m 46s
    12. Drawing Bézier curves
      5m 38s
  5. 54m 3s
    1. Introduction to variables
      10m 44s
    2. Understanding variable scope
      6m 53s
    3. Modifying variables
      9m 8s
    4. Creating arrays
      9m 53s
    5. Modifying arrays
      6m 37s
    6. Creating strings
      7m 3s
    7. Modifying strings
      3m 45s
  6. 1h 2m
    1. Incorporating randomness
      7m 59s
    2. Using Perlin noise
      4m 24s
    3. Shuffling with Java
      3m 30s
    4. Specifying line attributes
      8m 2s
    5. Changing placement modes
      5m 45s
    6. Understanding color attributes and functions
      4m 16s
    7. Exploring color spaces
      7m 44s
    8. Using color palettes
      7m 5s
    9. Transforming the grid
      8m 38s
    10. Exploring the attribute matrix
      5m 33s
  7. 52m 7s
    1. Building code blocks
      5m 57s
    2. Writing a while loop
      3m 52s
    3. Using for loops
      5m 35s
    4. Creating conditionals
      14m 50s
    5. Working with easing
      10m 51s
    6. Creating spirals
      11m 2s
  8. 18m 55s
    1. Mouse tracking
      3m 54s
    2. Hovering and clicking
      11m 16s
    3. Understanding keyboard interaction
      3m 45s
  9. 27m 32s
    1. Specifying fonts
      6m 43s
    2. Using images
      5m 51s
    3. Playing a video loop
      6m 20s
    4. Exporting video
      3m 47s
    5. Adding sound
      4m 51s
  10. 20m 49s
    1. Creating functions
      11m 48s
    2. Creating classes and objects
      9m 1s
  11. 31m 10s
    1. Using embedded data
      5m 26s
    2. Working with appended text data
      6m 4s
    3. Working with appended tabular data
      10m 26s
    4. Reading XML data
      9m 14s
  12. 48m 17s
    1. Generating dot plots
      11m 11s
    2. Building scatter plots
      10m 0s
    3. Making line plots
      9m 55s
    4. Creating bar charts
      9m 12s
    5. Checking out examples of maps, hierarchies, and networks
      7m 59s
  13. 20m 57s
    1. Introducing some principles of 2D design
      13m 44s
    2. Understanding color theory
      7m 13s
  14. 24m 46s
    1. Interacting with zooming, rotating, and sliding
      6m 26s
    2. Implementing slicing
      6m 47s
    3. Using rollovers
      5m 58s
    4. Introducing the GUI libraries
      5m 35s
  15. 10m 35s
    1. Sharing via OpenProcessing and other sites
      3m 19s
    2. Saving as a desktop application
      2m 42s
    3. Saving as JavaScript
      1m 47s
    4. Saving as an Android application
      2m 47s
  16. 2m 38s
    1. Where to go from here
      2m 38s

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