It depends on the content and the audience. Audio podcasts are more convenient for listeners who want to multitask or consume content while on the go, while video podcasts can be more engaging for visual learners or for topics that benefit from visual aids. Ultimately, both audio and video podcasts can be effective for different types of content, so it's important to consider the strengths and limitations of each format when deciding how to produce and distribute a podcast.
What would you choose? Listening on the go or be the engaged listener who likes learning through videos?