Hello, I'm a long time end-user of these cams and I'm pretty sure nothing has changed other than a recent price increase for the subscriptions. For $8/month (now $10) you get event based recordings for up to something like 10 cameras. Only motion events are recorded. And as I remember I think there was a setting for how long the maximum event would record for. But would not guarantee it would be that long. I can't check it because i'm on the Nest Aware PLUS plan which is now $20/month but you get 10 days of 24/7 recording which to me is invaluable. I have tried many cameras on the market and for event recording that ALL suffer from starting the recording to late or chopping off the ending and stopping to early. And since I have 5+ cameras it is even more worth it. Keep in mind 5 cameras all uploading to the cloud for 24 hours a day eats up some UP bandwidth but luckily I have great internet from Spectrum.
Here is a link with more detailed info on the subscriptions...
https://store.google.com/ca/product/nest_aware?hl=en-GB
Hope this helps.
