A demonstration of how to use Garmin VIRB Edit to make overlays for your kayaking videos. Sorry about the black bars, but I used the wrong preset in Final Cut Pro. I'm still getting used to it.

The command I use to make the solid blue screens is ffmpeg which is available for Windows, Mac and Linux.

The specific command to generate a 1080p 60fps blue screen for use with my GoPro videos is:

ffmpeg -f lavfi -i color=color-blue:s=1920x1080 -t 14400 -r 60 blue_1080p_60.mp4

The part after the '-t' is the duration in seconds - in this case, 4 hours. The part after the -r is the frames per second. The "s=1920x1080" controls the resolution. So to make a 4k/29.97fps background, I use

ffmpeg -f lavfi -i color=color=blue:s=3840x2160 -t 14400 -r 29.97 blue_4k.mpg

One thing I should have mentioned in the video but didn't: I use a blue screen background rather than a green screen because some of the gauges I use have green in them. Ideally, you want to use a color that doesn't appear in any of the gauges you select, or conversely select gauges that don't use the background color you use. You can adjust the colors of some gauges on the "Appearance" tab.

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