Khan Academy Videos

[gimp_guy]

Hi there, 

I'm looking to create educational videos for my clients similar to the Khan Academy videos (e.g. https://youtu.be/XSb3N4CM3yY).  I'm using a Wacom Intuos pen/tablet but my results are not quite as neat as in the video.  I was wondering, could you suggest what GIMP toolbox - tool options might be similar to what the author is using?

If you're able to comment on the tool type, the brush type, size, dynamics, etc that would be greatly appreciated.

[mholder]

I like the ink tool to make handwritten notes on images, with the smoothing turned on.

[gimp_guy]

(09-28-2017, 01:55 AM)mholder Wrote: I like the ink tool to make handwritten notes on images, with the smoothing turned on.

Thanks for the quick feedback.  That made a huge difference!  Do you do any fine tuning with the quality, weight, adjustment or sensitivity settings at all?

[rich2005]

That is a good video you referenced, 1280x720 @ 30 fps.

I do not know what screen capture OSX has available but there is a very good video editor for Mac.

These are just thoughts on possible procedures.

My advice, however tempting, do not do a full desktop capture, set up a procedure and stick to a capture area as  the Khan video. Might be something like this, where the Gimp canvas is the capture area. Then your tools and docks can be accessed without interfering with the subject.

   

For example, if using the pen tool to write on the canvas, then having the palettes & palette editor docks open, allows easy choosing a new FG colour.

Annotating the capture on-the-fly is a big task, one mistake and either start again or edit out later. I would set it up as completed before even starting recording.

Then the audio, not easy to record a commentary at the same time as creating the video. If possible record the video, edit it as required. Record audio to suit and mux the video/audio.  Even then slip-up's happen. Got the x's reversed in this demo.

demo set up: https://youtu.be/tXRAfo0drRQ 3 and a bit minutes.

Remember that for your purpose lots of the docks are outside the capture area. In fact, traditional Gimp multi-window mode is well suited for this.

Best of luck.

[gimp_guy]

(09-28-2017, 10:48 AM)rich2005 Wrote: That is a good video you referenced, 1280x720 @ 30 fps.

I do not know what screen capture OSX has available but there is a very good video editor for Mac.

These are just thoughts on possible procedures.

My advice, however tempting, do not do a full desktop capture, set up a procedure and stick to a capture area as  the Khan video. Might be something like this, where the Gimp canvas is the capture area. Then your tools and docks can be accessed without interfering with the subject.



For example, if using the pen tool to write on the canvas, then having the palettes & palette editor docks open, allows easy choosing a new FG colour.

Annotating the capture on-the-fly is a big task, one mistake and either start again or edit out later. I would set it up as completed before even starting recording.

Then the audio, not easy to record a commentary at the same time as creating the video. If possible record the video, edit it as required. Record audio to suit and mux the video/audio.  Even then slip-up's happen. Got the x's reversed in this demo.

demo set up: https://youtu.be/tXRAfo0drRQ 3 and a bit minutes.

Remember that for your purpose lots of the docks are outside the capture area. In fact, traditional Gimp multi-window mode is well suited for this.

Best of luck.

Hi Rich, 

Thank you for giving your insight and video.  The multi-window mode is new to me so I'll look into that. Also, the way to display a number of pen colors is particularly handy.  Thanks!

[mholder]

Personally, for the ink tool smoothing I wouldn't go above 35 in quality or 75 in weight. Much more than that the lag is a problem for me. Since you are doing a video recording then that is even more important.

If you use the brush tool, then I would not advise using a bitmap brush (.gbr files). I would create a new brush (click the little 'create a new brush' button on the bottom of the brushes window) that uses a generic shape that you can set the parameters of, and I think those are based on vector points, although I really don't know. Bitmap brushes sometimes leave strange artifacts when scaled in strange ratios to the original brush size.

I think the main thing is being comfortable using the stylus.

[gimp_guy]

(09-29-2017, 02:16 AM)mholder Wrote: Personally, for the ink tool smoothing I wouldn't go above 35 in quality or 75 in weight.  Much more than that the lag is a problem for me.  Since you are doing a video recording then that is even more important.

If you use the brush tool, then I would not advise using a bitmap brush (.gbr files).  I would create a new brush (click the little 'create a new brush' button on the bottom of the brushes window) that uses a generic shape that you can set the parameters of, and I think those are based on vector points, although I really don't know.  Bitmap brushes sometimes leave strange artifacts when scaled in strange ratios to the original brush size.

I think the main thing is being comfortable using the stylus.

Thanks for the suggestion on the brush settings and parameters.