Yes!! Not necessarily for Instagram or YouTube but for the improvement of your own practice. I will illustrate this with my own story.
I went through a period where sometimes I could grab my ankles in Kapotasana and sometimes I couldn’t. I could not figure out what I was doing different on the days I could from the days I could not. One day I was practicing at home so I decided to watch some videos on You Tube on Kapotasana. After I watched the videos, I decided to video myself. I watched myself and compared it against the videos and it became completely obvious why I was failing at Kapotasana. I am not a fan of Kapo and it is by no means easy, but I can now do it consistently.
Video works because what it feels like you are doing vs what you are actually doing can be two different things
My teachers are always telling me that I don’t round my back enough for Karandavasana but when I am doing it, I feel like I am totally rounding. Like, how could I round up anymore then I am rounding! What are they talking about? Well, I videoed myself doing Karandavasana, and my back is flat as a board. The pictures below also illustrate how flat my back is even though it feels like I am totally rounding up LOL!
One last story. The picture below is of Peg Mulqueen helping me with backbends. I am not exaggerating when I tell you that my backbend practice is divided up into two epochs, pre and post Peg Mulqueen. I always thought I had a good backbend practice, then I met Peg and I was like, “what have I been doing all these years?” Peg had someone take this picture so that I could see the potential of my back.
Every since seeing that picture, I have continued to deepen my backbends. This is January with Larry Hobbs catching from the floor. On good days, I can also catch from the air.
In conclusion: video can help you to truly see what is going on in your body. It is a great tool for when you feel stuck and cannot figure out why you are not progressing in a pose. It can provide valuable insights that can help you to progress. Sometimes, what we feel is different from what is actually happening. Video can help you to see the truth of what is really happening.