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.
I was going to just append this video to my original Fotga Sony Remote article, but there are sooo many RX10 Mark II Camera Owners that I decided to just post this up separately to show the functions this remote has with the RX10MKII. You can see with my little shoulder rig, I can continue to have the best stability because I never have to take my hands away from the handles when performing functions on the RX10 MKII.
Once again, here's the link to the Fotga Remote for Sony Cameras.
Fotga Start Stop Video Shutter Remote Sony A7sII A7RII