Problem with video is still bandwidth and the fact that it is more difficult to distribute. For podcasts you need one mp3, usually quite compressed. For video

Problem with video is still bandwidth and the fact that it is more difficult to distribute. For podcasts you need one mp3, usually quite compressed. For video you usually need more than one source, adaptable stream quality and good seeking (because most people do not watch videos end to end but only view parts of it). This is probably not insurmountable but I guess we need better tools for creators to abstract all of this.