To render an animation I saved out to an image sequence. I was still using ART renderer. Everything was done through Render Setup Menu. The main things that needed my attention are encircled in red in the following screenshot.

I created 250 individual JPEG files, one for each frame – from …/walkthrough_0001.jpeg through …/walkthrough_0250.jpeg.

Since I set the time for each frame = 10 min (and ~25dB quality), I could render 6 frames per hour. So the entire process took over 40 hours. I was praying my computer wouldn’t die.

Then, I played an image sequence using RAM player where I loaded those 250 frames which allowed me to play them back in real time.