There are no set length, the ideal length depends on the specific content of your podcast and what you want to highlight. However, in general, it is best to keep your audiogram relatively short, as this increases the likelihood that people will watch it all the way through. Aim for an audiogram that is between 30 to 90 seconds long as a general rule. This should give you enough time to showcase your podcast, hooking listeners in with a brief excerpt while keeping the video concise and engaging.