By Syndicated Content Apr 5, 2021 1:26 PM (Reuters) - ViacomCBS Inc said on Monday it had agreed to buy broadcaster Chilevision from AT&T Inc-owned WarnerMedia for an undisclosed sum, as the media giant looks to boost its streaming audience in Latin America. The acquisition will bolster ViacomCBS' Americas portfolio, which includes streaming services Paramount+ and Pluto TV as well as Argentine broadcaster Television Federal SA (Telefe). Streaming platforms, which witnessed a boom during the COVID-19 pandemic are increasingly investing in content to lure and retain more subscribers amid intense competition. Chilevision, which airs news shows, talk shows and soap operas, attracted nearly a quarter of Chile's total television viewership in 2020, according to ViacomCBS.