In HTML, when embedding media with <video> or <audio>, you can provide fallback content that appears if the browser does not support the element or the provided file formats.
Use multiple <source> elements to supply different formats (e.g., MP4, WebM, Ogg for video; MP3, OGG, WAV for audio).
Add text inside the <video> or <audio> tags — this text is displayed when the media cannot be played.
Include a download link so users can access the file even if playback fails.
For very old browsers, you can embed a Flash player or external plugin as an extra fallback (rarely needed today).
In short: Always include multiple formats using <source> and add fallback text or links so users can still access your media if their browser doesn’t support direct playback.
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