Good point. The oldest edition of Photoshop I use (in the video you can see 3 in my dock) is CS6 and the steps I run through in the video will work at least that far back.
One thing I didn’t show is that you have to have Timeline open from the Window menu to show the frames down at the bottom of the screen. That’s how I was able to select the first frame, shift-click the last frame and set them all to “No delay” in one step.
I was able to do the same maneuver as shown in the video with an animation I created entirely in Photoshop (a line of text moving from right to left) and skipped to the “Export > Render Video…” step.