Let’s talk about how to implement video playback in UniApp

With the development of mobile Internet technology, video playback has become one of the mainstream forms of entertainment for people. UniApp is a cross-platform development framework that allows developers to develop efficient applications quickly and easily. For the requirement of video playback, UniApp also provides corresponding solutions. This article will introduce UniApp’s video playback implementation method.

1. Basic concepts

Before introducing UniApp’s video playback implementation method, you need to understand some basic concepts.

1. H5 Video

H5 Video is an HTML5 video tag. It has now become a commonly used video playback method on web pages. It has good compatibility and can be used across platforms. use.

2. flv.js

flv.js is an open source JavaScript player that implements FLV (Flash Video) format decoding. It can be used without the need for Flash plug-ins. In this case, the playback of FLV format video is realized. Currently supported video formats include FLV, MP4, HLS (m3u8).

3. Video.js

Video.js is an excellent HTML5 video player framework. It has the characteristics of scalability and good compatibility, and can be easily Used to develop video player applications for multiple platforms.

2. UniApp implements video playback

Based on the above basic concepts, we can start to introduce how UniApp implements video playback.

1. H5 Video method

In UniApp, you can implement the basic video playback function by using the H5 video tag in the html tag. The specific code is as follows:

<video id="myvideo" src="http://example.com/path/to/your/video.mp4"></video>

Among them, the id attribute specifies the unique identifier of the video tag, and the src attribute specifies the path of the video file.

In the JS code, the video playback can be controlled through the following code:

var myVideo = document.getElementById("myvideo");
myVideo.play(); //播放
myVideo.pause(); //暂停

In this way, the video playback can be realized, and the style, layout and other operations can be easily adjusted. However, it should be noted that this method only supports MP4 video format and cannot directly play streaming videos.

2. flv.js method

If you need to play FLV format videos in UniApp, you can use the flv.js plug-in. The steps are as follows:

(1) Use npm to install the flv.js plug-in:

$ npm install flv.js --save

(2) HTML code can use the following method to introduce the flv.js plug-in:

<script type="text/javascript" src="../node_modules/flv.js/dist/flv.min.js"></script>

( 3) In UniApp's js code, use the following code to initialize the FLV video player:

var videoElement = document.getElementById("myvideo");
var flvPlayer = flvjs.createPlayer({
  type: 'flv',
  url: 'http://example.com/path/to/your/video.flv'
});
flvPlayer.attachMediaElement(videoElement);
flvPlayer.load();
flvPlayer.play();

Among them, the type parameter specifies the video format as FLV, and the url parameter specifies the path to the video file.

Video playback in FLV format can be achieved through this method, but it should be noted that this method requires manual implementation of functions such as the player control bar.

3. Video.js method

In UniApp, you can also use the Video.js framework to implement video playback. The specific steps are as follows:

(1) Use npm to install the Video.js framework:

$ npm install video.js --save

(2) Introduce the Video.js framework into the html code:

<link href="//vjs.zencdn.net/7.10.2/video-js.min.css" rel="stylesheet">
<script src="//vjs.zencdn.net/7.10.2/video.min.js"></script>

(3) In the JS code, use the following method to initialize Video.js Player:

var myVideo = videojs('myvideo', {
  controls: true,
  autoplay: false,
  sources: [{
    src: 'http://example.com/path/to/your/video.mp4',
    type: 'video/mp4'
  }]
});

Among them, the id attribute specifies the unique identifier of the video tag, the controls attribute specifies whether to display the control bar, the autoplay attribute specifies whether to automatically play, and the sources attribute specifies the path and format of the video file.

This method can realize the playback of multiple video formats and has good compatibility.

3. Summary

The above is an introduction to the basic methods of UniApp to implement video playback. Different implementation methods can be chosen for different application scenarios and requirements. Generally speaking, by using H5 Video, flv.js, Video.js and other solutions, developers can easily implement excellent UniApp video player applications.

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