I am wondering how I can get the following audio metadata after uploading a file and embedding within <audio> tag.
Is this possible with Web Audio API? Or do I need to parse the binary data of each audio file?
After researching this, I could not find a currently-available API for obtaining the metadata without manually parsing the binary file headers. I opened Git issue WebCodecs #411 with the WebCodecs team. WebCodecs is a new API that could potentially offer this metadata viewing feature.
Have you checked out music-metadata? It appears to support parsing all of the metadata mentioned above and supports quite a few formats.