Subtitles and Audio are supported with Chromecast? April 15, 2018 18:27 Updated Follow Chromecast supports subtitles, alternative audio, and 5.1 Surround Sound when available. Related articles Are Subtitles and Alternative Audio for HBO GO supported in Chromecast? How to set up Chromecast with HBO GO? What routers are compatible with Chromecast? What is the HBO GO PROMO? How do I log into a new device on my HBO GO account?