How to convert a PowerPoint animation to an animated GIF

These instructions use GIMP, and its animation plugin GAP. Before you start these steps, sort out GIMP with GAP.

A. Save the PowerPoint animation as a video

1. Open the PowerPoint pack.
2. Delete all slides except the one with the animation.
3. Remove headers and footers:
1. On the VIEW tab, click Slide Master.
2. Delete the heading text box, and any other text boxes.
3. Select the Hide Background Graphics box.
4. Click Close Master View.
4. Change the slide size to match the animation size:
1. On the DESIGN tab, click Slide Size > Custom Slide Size.
2. Reduce the height or width then click OK.
3. Repeat these steps until the animation fills the slide.
5. Save this new one-slide PPT as WMV.

B. Convert WMV to GIF, using GIMP with GAP

Source: https://www.youtube.com/watch?v=u5_3MGP2Lj4

1. Open GIMP. Don't try to open the file.
2. Click Video > Split Video into Frames > Extract Videorange.
3. Click Cancel at the random message about creating a videoindex file.
4. Do these things in the Extract Videorange dialog:
1. Browse for the WMV file, using the ... button.
2. Click the Video Range button.
3. On the far right, move the slider to the far right of the row of boxes. This makes the first list box display the number frames in the video.
4. Ensure that this number appears in these boxes:
• The third list box on the right (unnamed).
• The To Frame list box on the left.
5. Change Audiotrack to 0.
6. In the Mode box, select Create only one multilayer image.
7. Click OK.
5. Click Image > Scale Image, then change the image size.
6. Save the video as a GIF:
1. Click File > Export As.
2. Enter a new filename, and type .gif as the file extension.
3. Click Export.
7. In the Export Image as GIF dialog, make these changes:
1. Deselect GIF comment.
2. Select As animation.
3. Leave Loop forever selected.
8. Click Export.