MP4's exported incompatible with android and whatsapp web

[sam-moreton]

macOS version: 11.2.3
Kap version: 3.3.2

Steps to reproduce

record and export MP4 then try to upload to whatsapp web or open in android

Current behaviour

Video isn't playable like it used to be.

Expected behaviour

Video should upload to whatsapp web and should be playable without downloading

Workaround

[skllcrn]

To my knowledge there were no changes in how we output MP4 files in the time leading up to this issue, so I think this is unrelated to Kap. It seems that you are able to play the video file, maybe there's a setting to not automatically download files?

[sindresorhus]

We upgraded ffmpeg (the video encoder) in Kap 3.4.0. That could possibly have made the situation better. Can anyone try and confirm?