That was an interesting film, probably made in 1966 or so, based on the cars, clothing, and hairstyles.
The shots of the stereo console control panel being tapped with a mallet, and the record changers on the assembly line are definitely 1966 models.
That was a turning point in the company when they started to go into "Solid State" transistor design on their major equipment.
And with that, their quality became contaminated by design changes and design flaws.
But... as usual, they had to "follow the leader" and jump on the "Solid State" bandwagon like other manufacturers were doing.
I've had plenty of those sets in the shop through the years to observe this.
For instance, the stereo consoles amplifiers were pushed to their limits, stressing the transistors to gain as much power as possible, and those early germanium transistors didn't like that.
The record changers such as the RP-221 (shown in that video) were designed with an annoying control location placed too close to the tonearm, making speed change a chore to do without hitting the tonearm nearby, and possibly damaging the needle.
During that era, they also dropped the "Victor" part of their name, going to simply "RCA". - and in my opinion started a struggle within the company to stay afloat.
The previous designers, particularly during the 1960-1963 "tube type" time period, were fantastic in their work.
My 1963 RCA Victor console has the last and greatest efforts of the company, and it definitly shows it's colors in performance AND styling.
Even my snotty uppity "audiophile" friends are stunned when they hear it.