It's happened multiple times over a large number of formats. Even gifs have been exploited (https://www.zdnet.com/article/whatsapp-vulnerability-exploited-throu

It's happened multiple times over a large number of formats. Even gifs have been exploited (https://www.zdnet.com/article/whatsapp-vulnerability-exploited-through-malicious-gifs-to-hijack-chat-sessions/ https://www.zdnet.com/article/whatsapp-vulnerability-exploit...), but just as you said it's the complexity of video that makes it more difficult to keep secure.