APNG file size is huge - 15x larger than gifs

[ro-savage]

I exported the same short 8 second, 800x550 pixel clip at 15 FPS to mp4, gif and apng.

The mp4 is 76kb
The gif is 870kb
The apng is 12.6mb

According to these tests run using gifapng APNG should be smaller filesize than GIF.

There seems to be some major bloat/issue with the way Kap is exporting APNGs.

Gif Example

All examples in zip (as Github doesnt support APNG)
test-exports.zip

[ro-savage]

Running through the Kap exported gif through gifapng takes the filesize for the apng to 654kb.

Or running the Kap exported APNG through apng_optimzier makes the file size 650kb.

I expect either there is a setting wrong for in KAP for the ffmpeg export or ffmpeg support for APNG export is very poor.

[ro-savage]

Exported apng using gifapng and apng_optimizer