Video.js plugin for recording audio/video/image files.
Use npm (npm install videojs-record) or
bower (bower install videojs-record) to install the plugin or
download the library
and dependencies elsewhere.
Since v1.0 this plugin is compatible with video.js 5.0 and newer. If you want to use this plugin with an older video.js 4.x version, check the archived releases for a 0.9.x or older release.
Take a look at the changelog when upgrading from a previous version of videojs-record.
The plugin has the following mandatory dependency:
- Video.js - HTML5 media player that provides the user interface.
When recording audio and/or video you also need:
- RecordRTC.js - Adds support for audio/video/GIF recording.
And when recording audio-only, the following dependencies are also required ( to visualize the audio waveform):
- wavesurfer.js - Provides a navigable waveform for audio files. Comes with a microphone plugin used for realtime visualization of the microphone audio signal.
- videojs-wavesurfer - Transforms Video.js into an audio-player.
Optional dependencies when using other audio libraries (note that most of these audio codecs are already available in most modern browsers):
- libvorbis.js - Converts PCM audio data to compressed Ogg Vorbis audio, resulting a smaller audio files with similar quality.
- lamejs - Converts PCM audio data to compressed MP3 audio.
- opus-recorder - Converts the output of Web Audio API nodes as Opus and exports it into an Ogg container.
- recorder.js - A plugin for recording the PCM output of Web Audio API nodes.
Start by including the video.js stylesheet and library:
<link href="video-js.min.css" rel="stylesheet">
<script src="video.min.js"></script>If you're going to record audio and/or video you need to include RecordRTC as well:
<script src="RecordRTC.js"></script>The videojs-record plugin automatically registers itself when the script is included on the page:
<script src="videojs.record.js"></script>Add the extra stylesheet for the plugin that includes a custom font with additional icons:
<link href="videojs.record.css" rel="stylesheet">When recording either audio/video, video-only, animated GIF or a single image,
include a video element:
<video id="myVideo" class="video-js vjs-default-skin"></video>Note that recording both audio and video into a single WebM file is currently only supported in Mozilla Firefox >= 29 and Chrome >= 49. In older versions of the Chrome browser two separate Blob objects are created: one for audio and one for video.
When recording audio-only, also include the wavesurfer.js library and
the videojs-wavesurfer and microphone plugins. Make sure to place this before
the videojs.record.js script.
<script src="wavesurfer.min.js"></script>
<script src="wavesurfer.microphone.min.js"></script>
<script src="videojs.wavesurfer.js"></script>And define an audio element:
<audio id="myAudio" class="video-js vjs-default-skin"></audio>There is also support for additional audio libraries that allows you to record audio with alternative codecs (that otherwise might not be supported in the browser) like Ogg Vorbis, MP3 and Opus.
- audio/video (demo / source)
- video-only (demo / source)
- audio-only example (demo / source)
- image (demo / source)
- animated GIF (demo / source)
To try out the examples locally, checkout the repository using Git:
git clone https://github.com/collab-project/videojs-record.git
And install the dependencies using npm:
cd videojs-record
npm install
Start the local webserver for the examples:
grunt serve
And open http://localhost:9000/examples in a browser.
Configure the player using the video.js
options,
and enable the plugin by adding a record configuration to plugins. For
example:
var player = videojs('myVideo',
{
// video.js options
controls: true,
loop: false,
width: 320,
height: 240,
plugins: {
// videojs-record plugin options
record: {
image: false,
audio: false,
video: true,
maxLength: 5,
debug: true
}
}
});The available options for this plugin are:
| Option | Type | Default | Description |
|---|---|---|---|
image |
boolean or object | false |
Create single snapshot image. |
audio |
boolean or object | false |
Include audio in the recorded clip. |
video |
boolean or object | false |
Include video in the recorded clip. |
animation |
boolean or object | false |
Animated GIF without audio. |
debug |
boolean | false |
Enables console log messages during recording for debugging purposes. |
maxLength |
float | 10 |
Maximum length of the recorded clip. |
timeSlice |
float | 0 |
Accepts numbers in milliseconds; use this to force intervals-based blobs and receive timestamps during recording by listening for the timestamp event. |
frameWidth |
float | 320 |
Width of the recorded video frames. Use media constraints to change the camera resolution width. |
frameHeight |
float | 240 |
Height of the recorded video frames. Use media constraints to change the camera height. |
videoMimeType |
string | 'video/webm' |
The mime type for the video recorder. Use video/mp4 (Firefox) or video/webm;codecs=H264 (Chrome 52 and newer) for MP4. A full list of supported mime-types in the Chrome browser is listed here. |
videoRecorderType |
string or function | 'auto' |
Video recorder type to use. This allows you to specify an alternative recorder class, e.g. WhammyRecorder. Defaults to auto which let's recordrtc specify the best available recorder type. |
audioEngine |
string | 'recordrtc' |
Audio recording library/plugin to use. Legal values are recordrtc, libvorbis.js, lamejs, opus-recorder and recorder.js. |
audioRecorderType |
string or function | 'auto' |
Audio recorder type to use. This allows you to specify an alternative recorder class, e.g. StereoAudioRecorder. Defaults to auto which let's recordrtc specify the best available recorder type. Currently this setting is only used with the recordrtc audioEngine. |
audioMimeType |
string | 'auto' |
The mime type for the audio recorder. Defaults to auto which will pick the best option available in the browser (e.g. either audio/wav, audio/ogg or audio/webm). A full list of supported mime-types in the Chrome browser is listed here. |
audioBufferSize |
float | 4096 |
The size of the audio buffer (in sample-frames per second). Legal values: 0, 256, 512, 1024, 2048, 4096, 8192 and 16384. |
audioSampleRate |
float | 44100 |
The audio sample rate (in sample-frames per second) at which the AudioContext handles audio. Legal values are in the range of 22050 to 96000. |
audioChannels |
float | 2 |
Number of audio channels. Using a single channel results in a smaller filesize. |
audioWorkerURL |
string | '' |
URL for the audio worker, for example: /opus-recorder/build/encoderWorker.min.js. Currently only used for opus-recorder and lamejs plugins. |
animationFrameRate |
float | 200 |
Frame rate for animated GIF (in frames per second). |
animationQuality |
float | 10 |
Sets quality of color quantization (conversion of images to the maximum 256 colors allowed by the GIF specification). Lower values (minimum = 1) produce better colors, but slow processing significantly. The default produces good color mapping at reasonable speeds. Values greater than 20 do not yield significant improvements in speed. |
Methods for this plugin documented below are available on the recorder object
of the video.js player instance. For example:
player.recorder.destroy();| Method | Description |
|---|---|
isRecording |
Returns a boolean indicating whether recording is active or not. |
getRecordType |
Get recorder type as string. Either image_only, animation, audio_only, video_only or audio_video. |
saveAs |
Show save as dialog in browser so the user can store the recorded media locally. |
destroy |
Destroys the recorder instance and children (including the video.js player). |
reset |
Not as destructive as destroy: use this if you want to reset the player interface and recorder state. |
stopDevice |
Stop the recording and the active audio and/or video device(s). |
getDevice |
Start the audio and/or video device(s). |
getDuration |
Get the length of the recorded stream in seconds. Returns 0 if no recording is available (yet). |
getCurrentTime |
Get the current time of the recorded stream during playback. Returns 0 if no recording is available (yet). |
enumerateDevices |
Get async list of media input and output devices available on the system. |
start |
Start recording. |
stop |
Stop recording. |
pause |
Pause recording. |
resume |
Resume recording. |
Plugin events that are available on the video.js player instance. For example:
player.on('startRecord', function()
{
console.log('started recording!');
});| Event | Description |
|---|---|
deviceReady |
The webcam and/or microphone is ready to use. |
deviceError |
User doesn't allow the browser to access the webcam and/or microphone. Check player.deviceErrorCode for the specific error code. |
startRecord |
User pressed the record or camera button to start recording. |
progressRecord |
Fires continuously during recording (until recording is stopped or paused). |
stopRecord |
User pressed the stop button to stop recording. |
timestamp |
Fires continuously during recording whenever a new timestamp is available. Only fires if the timeSlice option is set. |
finishRecord |
The recorded stream or image is available. Check the player.recordedData object for the recorded data. |
enumerateReady |
enumerateDevices returned the devices successfully. The list of devices is stored in the player.recorder.devices array. |
enumerateError |
An error occured after calling enumerateDevices. Check the player.enumerateErrorCode property for an description of the error. |
Media stream constraints allow you to specify the types of media to request, along with any requirements for each type.
The following example shows how to change the camera resolution to 1280 by 720 pixels:
var player = videojs('myVideo',
{
controls: true,
loop: false,
// dimensions of video.js player
width: 1280,
height: 720,
plugins: {
record: {
maxLength: 5,
debug: true,
audio: false,
video: {
// video constraints: set resolution of camera
mandatory: {
minWidth: 1280,
minHeight: 720,
},
},
// dimensions of captured video frames
frameWidth: 1280,
frameHeight: 720
}
}
});Listen for the finishRecord event and obtain the recorded data from the
player.recordedData object for further processing:
// user completed recording and stream is available
player.on('finishRecord', function()
{
// the recordedData object contains the stream data that
// can be downloaded by the user, stored on server etc.
console.log('finished recording: ', player.recordedData);
});Note that in the Chrome browser player.recordedData returns an object with
audio and video properties when recording both audio/video. In Firefox
it returns a single WebM Blob object containing both audio and video.
Use the saveAs method to show a 'Save as' browser dialog where the user can
choose the storage location for the recorded data. It accepts a name object that
contains a mapping between the media type and the filename. For example:
player.on('finishRecord', function()
{
// show save as dialog
player.recorder.saveAs({'video': 'my-video-file-name'});
});It's also possible to get data during recording with specific time-intervals. This could be useful in scenarios where you're recording a long clip and planning to upload recorded blobs to a server periodically, where the clip is stiched it together.
Do this by listening for the timestamp event. For example:
// monitor stream data during recording
player.on('timestamp', function()
{
// timestamps
console.log('current timestamp: ', player.currentTimestamp);
console.log('all timestamps: ', player.allTimestamps);
// stream data
console.log('array of blobs: ', player.recordedData);
// or construct a single blob:
// var blob = new Blob(blobs, {
// type: 'video/webm'
// });
});Check the jquery.fileupload or Fine Uploader examples on how to upload the data to a server.
Use enumerateDevices to get a list of the available input and output devices
on the user's system, e.g. FaceTime HD-camera, default (Built-in microphone)
etc.
Check out the enumerateDevices example (demo / source).
After you aquired the device id (called deviceId in the example below) specify it in the player configuration
using constraints:
record: {
maxLength: 20,
debug: true,
audio: true,
video: {
// video constraints: use preset device
optional: [{sourceId: deviceId}]
},
}To disable and hide specific controls, use the video.js controlBar
option:
controlBar: {
// hide volume and fullscreen controls
volumeMenuButton: false,
fullscreenToggle: false
},RecordRTC is the default recording library but there is also support for other audio libraries. Check the plugins wiki page for more information.
This plugin supports multiple languages. Each language has it's own file
(found in the lang directory) that contains the translated text.
Using a different language, for example Dutch (nl), is done by including
the plugin's language file and the Video.js language file:
<script src="videojs-record/dist/lang/nl.js"></script>
<script src="nl.js"></script>And setting the Video.js player's language option:
language: "nl"Adding support for an additional language is done by adding a new file with
a filename that consists of the countrycode and the .json extension, eg.
fr.json. The build script compiles the JSON into a usable
language file, eg. fr.js. Check the Video.js wiki for a
list of supported countrycodes.
Pull requests to add more languages to this plugin are always welcome!
You can also help out using the Transifex online translation tool.
The Video.js community created lots of plugins that can be used to enhance the player's functionality.
Install grunt-cli:
sudo npm install -g grunt-cli
Install dependencies using npm:
npm install
Generate font assets once:
grunt font
Build a minified version of the library code and stylesheet:
grunt
Generated files are placed in the dist directory.
Generate or update the font files:
grunt font
Check the the font readme for more information.
This work is licensed under the MIT License.