The following paragraph from my (hopefully) forthcoming article explains the video:
The activity had been, technically speaking, criminalized under a 1934 forestry
code. The authorities, however, seldom enforced the law, doing so usually only when a
baloeiro stood out for some reason. As an example, the famous João Ely once made a
tribute balão to Walt Disney, who had recently died. Walt Disney company executives
went to Rio to film the launch. Due to the publicity, a court issued an injunction to Ely
telling him not to proceed. A Disney executive contacted the U.S. embassy, which
mobilized a variety of local politicians to achieve a compromise in order to allow Ely to
launch the tribute balão tethered to the ground. Ely did not keep his end of bargain, since
the notion of tethering a balão would seem sacrilegious to baloeiros, and released the
Disney balão in the presence of a distinguished crowd of politicians, embassy
functionaries, Disney executives and even local police chiefs who came to watch the
launch. Despite Ely’s indiscretion of disobeying official orders, they applauded it. (Bueno and Patrocínio, Balão, Paixão Inexplicável , 108-110)