A podcast website uses , but users report that playback does not start automatically on their phones. Which explanation is most technically accurate? Is it because browsers block autoplaying audio with sound to protect the user experience, or because modern mobile browsers specifically prevent unmuted media from autoplaying? The other options suggest that autoplay requires controls or that MP3 files are unsupported for autoplay.
2 Answers
Option 2 is the more technically complete answer. Modern browsers, particularly on mobile, generally block autoplay when the media would produce audible sound. This helps prevent intrusive playback and unexpected data usage. Muted media may be allowed to autoplay, but an audible podcast normally requires a user interaction such as pressing a play button.
Option 1 is also essentially correct, but it is the shorter version. The key issue is not the MP3 format or the absence of controls—it's that browsers usually require the user to interact with the page before starting media that has sound.
So if only one answer is allowed, option 2 is preferable because it explains the browser policy more precisely?