How to use PHP to implement real-time video playback in WeChat applet

With the development of mobile Internet technology, WeChat mini programs have received more and more attention and love from people, among which real-time video playback is an indispensable function. This article will introduce how to use PHP to implement real-time video playback in WeChat mini programs.

1. Obtain the appid and secret of the WeChat applet

After registering and creating the applet in the WeChat public platform, you need to obtain the AppID and AppSecret first. Select "Develop" in the menu bar, enter the development page, and select "Develop Settings" to obtain it.

2. Set up the PHP environment and install the SDK

Set up the PHP environment locally or on the server, and ensure that the ffmpeg and rtmpdump extensions have been installed. At the same time, you also need to download the SDK.

3. Set the server configuration of the WeChat mini program

Open the WeChat public platform, select "Development" - "Development Settings", find the "Server Domain Name" section, and add the following domain name to In "request legal domain name".

https://api.weixin.qq.com
https://wx.qlogo.cn
wss://wx.imweb.io
https://www. imweb.io
http://www.oss.imweb.io

4. Implement streaming media server

Set the server as a streaming media server that supports rtmp and hls protocols. It can be implemented using the open source nginx-rtmp or ffserver.

5. Real-time video playback with PHP

1. Introduce the SDK file. Unzip the downloaded php-sdk folder and introduce the files in the include folder into the developed PHP code.
2. Get access_token. First, you need to obtain the access_token of the WeChat applet for subsequent access to the API interface. The specific code is as follows:

$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$secret;
$json = file_get_contents($url);
$obj = json_decode($json);
$access_token = $obj->access_token;

3. Get the QR code with parameters. By calling the WeChat applet interface, a QR code with parameters is obtained so that users can scan the code for real-time video playback. The specific code is as follows:

$url = "https://api.weixin.qq.com/cgi-bin/wxaapp/createwxaqrcode?access_token=".$access_token;
$data = array(
    'path' => '/pages/live/index?roomid='.$roomid,
    'width' => 200,
    'is_hyaline' => true
);
$options = array(
    'http' => array(
        'header'  => "Content-type: application/json
",
        'method'  => 'POST',
        'content' => json_encode($data),
    ),
);
$context  = stream_context_create($options);
$result = file_get_contents($url, false, $context);

4. Add the player on the mini program. Finally, add a real-time video player to the mini program to start real-time video playback. The specific code is as follows:

<live-player src="{{src}}" autoplay bindstatechange="statechange"></live-player>

The above are the specific steps to use PHP to implement real-time video playback in the WeChat applet. It should be noted that real-time video playback requires a good network environment and sufficient bandwidth to ensure smooth and stable video playback. In addition, security issues need to be paid attention to during the implementation process to ensure the security and reliability of data transmission.

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