Video.js Wavesurfer

A video.js plugin that adds a navigable waveform for audio and video files, using the wavesurfer.js library. Includes support for fullscreen mode and real-time visualization of microphone input.

Installation

You can use bower (bower install videojs-wavesurfer) or npm (npm install videojs-wavesurfer) to install the plugin, or download it elsewhere.

Using the Plugin

The plugin depends on the wavesurfer.js and video.js packages:

<link href="http://vjs.zencdn.net/4.12.14/video-js.css" rel="stylesheet">

<script src="http://www.wavesurfer-js.org/dist/wavesurfer.min.js"></script>
<script src="http://vjs.zencdn.net/4.12.14/video.js"></script>

The plugin automatically registers itself when you include videojs.wavesurfer.js on your page:

<script src="videojs.wavesurfer.js"></script>

Add an audio element:

<audio id="myClip" class="video-js vjs-default-skin"></audio>

Or video element:

<video id="myClip" class="video-js vjs-default-skin"></video>

Plugin Options

Configure the player using the video.js options, and enable the plugin by adding a wavesurfer entry with the related wavesurfer.js options:

var player = videojs("myClip",
{
    controls: true,
    autoplay: true,
    loop: false,
    width: 600,
    height: 300,
    plugins: {
        wavesurfer: {
            src: "media/heres_johnny.wav",
            msDisplayMax: 10,
            waveColor: "grey",
            progressColor: "black",
            cursorColor: "black",
            hideScrollbar: true,
            waveformHeight: 40
        }
    }
});

See the full audio example (demo or source) and the video example (demo or source).

The additional options for this plugin are:

option	type	default	description
src	string	null	The URL of the audio/video file or 'live' when using the microphone plugin.
msDisplayMax	float	3	Indicates the number of seconds that is considered the boundary value for displaying milliseconds in the time controls. An audio clip with a total length of 2 seconds and a msDisplayMax of 3 will use the format M:SS:MMM. Clips with a duration that is longer than msDisplayMax will be displayed as M:SS or HH:MM:SS.

Customizing controls

If you want to disable and hide specific controls, use the video.js children option:

children: {
    controlBar: {
        children: {
            // hide fullscreen control
            fullscreenToggle: false
        }
    }
},

Microphone plugin

It's also possible to use a microphone for real-time rendering of the audio waveform. This uses the microphone plugin that comes with wavesurfer.js.

Include the additional wavesurfer.microphone.js plugin on your page:

<script src="http://wavesurfer-js.org/dist/plugin/wavesurfer.microphone.min.js"></script>

Add an audio element:

<audio id="myLiveAudio" class="video-js vjs-default-skin"></audio>

Configure the player: use the value 'live' for the src option and hide some player controls that we don't use:

var player = videojs("myLiveAudio",
{
    controls: true,
    width: 600,
    height: 300,
    children: {
        controlBar: {
            children: {
                currentTimeDisplay: false,
                durationDisplay: false,
                muteToggle: false,
                timeDivider: false,
                volumeControl: false
            }
        }
    },
    plugins: {
        wavesurfer: {
            src: "live",
            waveColor: "black",
            cursorWidth: 0,
            interact: false
        }
    }
});

See the full live example (demo or source).

More features using other plugins

The Video.js community created lots of plugins that can be used to enhance the player's functionality. Plugins actually tested with videojs-wavesurfer:

• videojs-record - Adds support for recording audio/video files.
• videojs-persistvolume - Saves user's volume setting using localStorage, but falls back to cookies if necessary.

Contributing

Install grunt-cli:

sudo npm install -g grunt-cli

Install dependencies using npm:

npm install

Or using bower:

bower install

Build a minified version:

grunt

Generated files are placed in the dist directory.

License

This work is licensed under the MIT License.