How Can I Retrieve Track Information from Audio Streams Using PHP?

Retrieving Track Info from Audio Streams with PHP

Pulling track information from audio streams can be challenging, especially when using PHP. While the stream_get_transports function provides limited information, it's not suitable for extracting artist and track metadata from AOL streams.

To overcome this limitation, you can connect to the server directly using fsockopen(). By sending a custom request with the "Icy-MetaData:1" header, you instruct the server to provide metadata.

The server will respond with headers, including a "icy-metaint" value that specifies the meta interval. This interval indicates the number of bytes of MP3 data to process before receiving metadata.

After reading the specified number of MP3 bytes, the first byte of metadata indicates the length of the metadata. Multiplying this byte value by 16 gives you the number of metadata bytes to read.

The resulting metadata string contains information about the stream, including the stream title and URL. You can parse this information using your preferred method, such as splitting on the ";" character.

To complete the process, disconnect from the server after retrieving the metadata. By following these steps, you can successfully extract track information from audio streams using PHP.

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