In setting up audio demos in a RW site, with a Stacks Audio Player, I have the option for MP3s, Oggs or even WAV files. I had expected only an MP3 option. Should I make all three formats available in Resources? Is it so certain players can use? TIA.
You can see mp3 for example is supported on all browsers.
At one point I believe some browsers on Windows needed Ogg. For a few years I’ve only used MP3s. My students who use the webpages have had zero problems: and they use Mac and Win and a variety of browsers.
It was all to do with licensing, rather than compatibility.
The decoder required to playback MP3 and MP4 files is owned by the Moving Picture Experts Group (MPEG). I believe there were some tensions regarding incorporation of this ‘closed’ codebase into open source browsers (like Firefox) and ethical issues of donation-based software having to pay very high fees into a private company to license the decoder.
So for many years, MP3 and MP4 support was absent in a couple of big-name web browsers. Hence these additional formats had to be offered as a way of a fall-back or safety net.
The legal issues have since been resolved. Most newer web browsers can now playback MP3 / MP4 files without any problems.
It’s a personal choice if you want to supplement your MP3 / MP4 files with other formats. I tend to add WebM or OGG variants as a best practice still, but plenty of other people don’t.
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