Alone, what a good question! The reality is, it depends on your level. Yes, videos are easier to eat h with subtitles...especially up to late B1 level. However, as you move to B2 level, you need to start listening actively to podcasts, even for short periods of time.
Your brain has to learn how to actively listen for words it now recognises.
Before that, I would still recommend having podcasts on in the background, even if you don't understand a word! You don't have to actively listen--just have it on so that your brain becomes attuned to the sounds and rhythms of English. What's more, you may pick up a few words without even trying this way.
All the best, and don't, forget--Italki has a lot of podcasts!!