There are a number of other endpoints relating to MV cameras - have a look here:
https://developer.cisco.com/meraki/api-v1/#!get-device-camera-analytics-live (look under Camera > monitor and > Configure on the Left Hand Side.) You should find this page really useful for reviewing (and trying) available API endpoints across the whole Meraki portfolio, too. Note; I'd suggest switching fully to v1 endpoints; v0 has been deprecated for over a year and is scheduled to sunset in about a month's time.
There are a number of calls also available for MT sensors, but they are currently beta, I believe and you would need to apply via your Meraki account team to have this enabled in the required dashboard.
I would also recommend that you look into the capabilities available through the MV Sense license (which you can try via free licences included with your cameras) and MQTT more generally:
https://developer.cisco.com/meraki/mv-sense/#!mv-sense-overview
