One time I asked my therapist to listen to an audio recording I had made of my husband yelling at me because I wanted him to understand what it was like. I don't think he really wanted to listen to it because the day we were going to do it in session, he backed out saying he was worried he might not be able to be fully present for me. But I think he realized that I needed him to hear it, probably based on my reaction to him backing out at the last minute, so he did listen to it, just not in session. The response from your therapist about not watching a video for you makes me angry. It's not like you're asking her to watch it for entertainment. It's obvious you're trying to communicate something with it and she should watch it. I hope you're able to express your hurt to her and that you get a satisfying response.