Little Ol' Bosko and the Cannibals is a 1937 Happy Harmonies cartoon.
Bosko is on his way to give a bag of cookies for Grandma when he gets stopped by a frog that sounds like Louis Armstrong. In this version, he and other frog caricatures of famous African-American musicians like Fats Waller, Cab Calloway, and Bill "Bojangles" Robinson are portrayed as cannibals.
The cartoon is rarely seen on television due to stereotyping, which is why many unofficial videos have such horrible video quality. Many are seen without copyright protection on YouTube, despite WBTV (WB Television) owning the rights to the copyright on YouTube.