The problem: small upload at home (ADSL, 80kb/s), big FLAC files on HDD, serve them via www so a remote client can play them realtime – solution: on-demand mp3 streaming, which automatically converts FLAC file streams to MP3 data.
So if a client wants a FLAC file from the webserver, it returns the file in MP3 format. The client must handle that MP3 data is coming under the FLAC extension (ffmpeg or vlc does this, I use them as clients).
I’m using lighttpd as the webserver. I added these lines into lighttpd.conf:
1 2 3 4 5 6 7 8 9 | $HTTP["host"] == "puttony.home.nonoo.hu" { url.rewrite-once = ( "(.*)(\.flac|\.fla|\.ape)$" => "/2mp3.php?src=/home/storage4/backups/nonoo$1$2" ) } $HTTP["remoteip"] !~ "::ffff:217.20.130.34|::ffff:192.168.|::ffff:127.0.0.1" { $HTTP["url"] =~ "^/mp3/" { url.access-deny = ( "" ) } } |
The first section rewrites URLs which point to a .flac, .fla or .ape file and redirects these queries to the PHP script called 2mp3.php. I store my music files under /home/storage4/backups/nonoo. The second section only allows access to my mp3 folder from the specified IP address ranges.
The 2mp3.php script looks like this:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | <?php $src = $_GET['src']; if( preg_match( '/^http:\/\//', $src ) ) $src = str_replace( array( '%2F', '%3A' ), array( '/', ':' ), rawurlencode( $src ) ); header( 'Content-Type: audio/mpeg' ); $ffmpeg = "/usr/local/bin/ffmpeg -i '$src' -vn -acodec libmp3lame -vol 200 -ab 320000 -ar 44100 -ac 2 -f mp3 -"; $handle = popen( $ffmpeg, 'r' ); while( !feof( $handle ) ) { $read = fread($handle, 4096); echo $read; } pclose( $handle ); ?> |
As you can see, I’m using ffmpeg in a pipe as the transcoder. It can handle various inputs given in the ?src= parameter, so it’s not limited only for the files on my HDD.
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