The video features Muppet trash and was part of the 1973 TV special Keep U. S. Beautiful.
According to the Muppet Wiki:
Keep U. S. Beautiful was a comedy-variety special with an anti-pollution/litter theme, which debuted over NBC on March 27, 1973. Hosted by Raymond Burr, the special was divided into a series of sketches, with celebrity performers
Thanks to the internet and you tuber Rick Thomas, you can watch the Muppets' entire segment here!
The concept of Muppet trash was "recycled" in 1989 for The Jim Henson Hour, which is itself a Henson rarity.