mirror of
https://github.com/koel/koel
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35 lines
2.1 KiB
Markdown
35 lines
2.1 KiB
Markdown
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# Streaming Music
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## Streaming Methods
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Koel supports three streaming methods which can be configured via the `STREAMING_METHOD` setting in `.env` file:
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* `php`: Use native PHP `readfile()`. This is the default method, and the slowest and most unstable one.
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* `x-accel-redirect`: Use nginx's [X-Accel](https://www.nginx.com/resources/wiki/start/topics/examples/x-accel/) module, designed for serving larger contents directly to the end user. Refer to [`nginx.conf.example`](https://github.com/koel/koel/blob/master/nginx.conf.example) for a sample nginx configuration file.
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* `x-sendfile`: Use Apache's [mod_xsendfile](https://tn123.org/mod_xsendfile/) module. You'll need to install and configure the module manually. A sample configuration is as following:
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```apache
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LoadModule xsendfile_module libexec/apache2/mod_xsendfile.so
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# These configuration can be put in the VirtualHost directive as well
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<IfModule mod_xsendfile.c>
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XSendFile on
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XSendFilePath /mnt/media
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</IfModule>
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```
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Note that although its home page denotes "Apache2/Apache2.2," the module itself is known to work with later versions of Apache as well.
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:::tip Tip
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If you're using [Koel mobile app](https://koel.dev/#mobile) and can't play the songs, try switching the streaming method to `x-accel-redirect` or `x-sendfile` instead of `php`.
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:::
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:::warning Notice
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`STREAMING_METHOD` doesn't have effects if you're transcoding or streaming from a cloud storage.
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:::
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## Transcoding FLAC
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Koel supports transcoding FLAC to mp3 on the fly when streaming music. This behavior can be controlled via a `TRANSCODE_FLAC` setting in `.env` file:
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* `false`: Disable FLAC transcoding. Koel will stream FLAC files as-is, producing the lossless audio quality. This is the default behavior.
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* `true`: Enable FLAC transcoding. Koel will transcode FLAC to mp3 on the fly. You'll need to have [FFmpeg](https://ffmpeg.org/) installed on your server and set its executable path via the `FFMPEG_PATH` setting in the `.env` file. The transcoding quality can also be controlled via `OUTPUT_BIT_RATE` (defaults to `128`).
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