The exact origin of this clip is not documented; it was uploaded by a user with no credited source, voice actor, or release year attached. Short Thai greetings like this circulate widely as soundboard clips because Thailand is a popular travel and streaming destination, and creators like dropping a local-language hello into their content. The phrase ยินดีต้อนรับ itself is the standard formal welcome used everywhere from airports to hotels. Its upbeat, universally friendly tone keeps it in steady use as a quick cultural flourish.