When you want an easier way to start and stop video on your sony cameras, I recommend getting this inexpensive Fotga remote. I've had this remote for a while, and it's worked with my Sony A7s, RX10, A6500, etc. Basically it should work with any Sony camera that uses a multiport usb input.
Fotga Start Video and Zoom Remote for Sony
Cheesycam
Post author@Joseph - Try going through the menu outside of video mode. Maybe try P A S M mode. In the menu change Zoom Setting to Digital Zoom or Clear Image Zoom.
Joseph
What is the settings on a6500 so the zoom will work. I have a6500 plus 35mm F1.8 and recently bought goths remote it doesn't zoom in. It says optical zoom only.