Episode 188: The Book

188Download the Video! (37:10 74.1MB)

Download the Companion File! (0.3MB)

This episode is about using GAP, the GIMP Animation Package, and “The Book of GIMP”. I walk through one of the tutorials of the book and create a multi layered animation that will be used in a cleaned up form for these videos. I can not praise the book enough, you can read more in a former blog post. GAP showed some flaws, but this may be the problem of the Debian package that I used.

“The Book of GIMP” has also a reference part. I compare that to the official GIMP documentation while looking for information about the Convolution Matrix.

Before all that I tell you about a GIMP plugin for exporting a layer as a PDF file and I defend my new camera – 36 Megapixels may not be too much, they only show the limits of the lenses…..   Cameras with smaller sensor sizes of course hit a barrier with more and more MP.

The next episode will have animated lower thirds and a proper automatically generated title screen. 😉


00:00:00 Intro
00:00:14 GIMP Magazine #3
00:01:20 Plugin for PDF export of layers
00:01:48 Are 36 Megapixel too much? (Nikon D800)
00:04:08 Where are 6 Megapixels enough? Sensor sizes
00:05:40 The Book of GIMP review
00:07:12 Testing the animation chapter
00:08:27 GAP – Moving Along a Path
00:10:12 New image from template and transparent background
00:11:50 Planning the animation
00:12:16 Building a dummy
00:13:40 Selecting the border of a selection
00:15:55 Make a new image out of a layer
00:17:10 GAP: Duplicate a layer 20 times
00:18:00 GAP: Move Path Tool
00:28:50 GAP: VCR Playback
00:29:30 GAP: Exporting an animation
00:31:40 The Manual part of “The Book of GIMP”
00:32:00 “The Convolution Matrix” compared with docs.gimp.org
00:35:30 Help to improve the documentation!
00:36:00 The printed book and the final verdict

Creative Commons License
Meet the GIMP Video Podcast by Rolf Steinort is licensed under a Creative Commons Attribution 3.0 Unported License.
Permissions beyond the scope of this license may be available at http://meetthegimp.org.

20 thoughts on “Episode 188: The Book

  1. Hi Rolf.

    I think (I could be wrong tho) that the video link You posted is messed up 🙂 it sends You here:


    Instead of here (as a pattern of previous download links would suggest) here:


    but then the .mp4 files gives 404…

    The .zip file is only a 300kB in size so I doubt that it’s the compressed 37 minutes of podcast…

    Thanks in advance for fixing the links.



    • I just fixed it – this has never happened. 😉

      The generic format is meetthegimpXXX.mp4 for the videos and mtgXXX.zip for the companion files. And if you hunt for x.mp4 you can perhaps download an episode before publication. 😉

  2. Hello Rolf
    Forgive me, please, but there is some mistake. The video and companion file have got exactly same link address.

  3. The reason that the logo layer did not appear when you activated Instant Apply is because the coordinates of the Source are its image coordinates, not the layer coordinates. Your logo was being placed in the preview, it was just located outside the preview window.

    Whenever you are placing a layer using Move Path and are scaling, rotating, or performing other transformations (e.g., perspective, shear), you typically want to start with your “model layer” be the same size as the model image. This is because the scaling or transformation affects even those areas that are outside the layer but inside the image, effectively repositioning the model on the canvas.

    This is not a bug with GAP, it is a feature. This is especially obvious if you consider rotation of your model, wherein you might wish to have the model “orbit” a point on the screen, rather than rotate around its own center. This can be controlled by employing a model layer that is not coincident with its model image. If you do not wish this feature then the easy solution is to, as you did in your video, drag-n-drop the model layer to the Toolox to create a new image.

    Also, the reason that your background became black in your exported PNG files is that you chose the Flatten option in the Frames Convert dialog. Flattening an image removes its alpha channel, substituting the currently active background color (which at the time you performed the “Video->Frames Convert” was set to black). In short, you should not have checked the Flatten option.

    As always, thanks for sharing your videos.

  4. Another example of why Move Path uses image coordinates for Sources is when overlaying an animation onto a background. If you have an animated GIF of a man walking across the screen, you want that walking to take place even with a fixed path of a single control point. If GAP did not behave the way it does, this would require that either 1) “Layer to Image Size” be performed on each of the GIF’s layers or 2) you would need to do some pretty intense arithmetic trying to sync up the motion of the walker just to retain its original movement.

  5. Rolf what kind of Linux do you use? I looks very fast what I see from the video.
    And Big Thanks for the Meet the Gimp all the years

    • I use Debian Testing with a bit of Experimental, the kernel for example. The processor is a AMD Phenom II X4 810 – not the fastest horse anymore. But since I invested in 16 G of memory it is quite fast.

      But sometimes I cut out the waiting time in the video….. 😉

      • Hi Rolf. I have a question to you, not about the topic but I think it is also important. Do you use monitor with wide color gamut? I’ve read that only kwin_4.10(kde_4.10) and composite manager on Linux and OSX have support of that kind of monitors, but not gnome. What do you think about it?

        • For me it would be a complete waste of money. 😉 I have a LG IPS231, calibrated with a Spyder 2. “Good enough” for me.

          • Can you add some arguments why it would be “a complete waste of money”? Just heared from people that pictures and videos looks great on such a monitors on OSX or Windows(on Windows only in supported programs). OS x which seems has a full support of such monitors?

          • I haven’t looked into this, but I assume that a “wide gamut” monitor is one of these pro things that costs in the 4 digits, and in a lot of cases not starting with a 1. Then you need also the proper lighting and surroundings.
            I am sure they look terrific, but then I would have to do my images in another colour space and would not be able to just show them on another device like my notebook or a tablet without converting them first.
            My full workflow is in sRGB, so I would not be able to use the advantages of these monitors.

          • Well, actually not all with a price of 4 digits, f.e. 24″ Dell UltraSharp U2412M — about $300(if I understand right it is possible to switch in it settings between sRGB and a wide gamut. So it is good for viewing photo and video in wide gamut and to edit in sRGB as I think). But thanks for information.
            Can you make a tutorial how did you calibrate your monitor?

  6. Pingback: Links 19/3/2013: Linux 3.8 Approaching, Cyprus Banks News | Techrights

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