A video of a woman teaching Salah
The woman who acts the stages of prayer, so that she can teach the Muslim women then this is allowed as long as this woman is wearing modest clothing, and she perfectly performs the prayer the way the Prophet ﷺ taught us. There is no doubt that teaching with the help of pictures is better at conveying information to the viewer, especially to the majority of people who do not perfect their prayer. This is considered a way of teaching. However, if she is with a non-mahram man who is helping her in making the video, in case the shooting is taking place in his home, then it is recommended that the man should be her relative, so that this does not lead to temptation.