Implementation of short video playback and editing functions in PHP and mini programs

Implementation of short video playback and editing functions in PHP and mini programs

With the rapid development of the Internet, short videos have become an indispensable part of people's daily lives. Many users like to shoot short videos with their mobile phones and want to be able to play and edit them after they are uploaded to the server. This article will introduce how to use PHP and mini programs to realize the playback and editing functions of short videos.

1. Video upload and storage

First, we need to set up a directory on the server for storing short videos. You can use PHP's file processing function to implement the file upload function. The following is a simple sample code:

<?php
    if ($_FILES['video']['error'] > 0) {
        echo '文件上传错误：' . $_FILES['video']['error'];
    } else {
        $file = $_FILES['video'];
        $filename = $file['name'];
        $tmpname = $file['tmp_name'];
        move_uploaded_file($tmpname, 'videos/' . $filename);
        echo '文件上传成功！';
    }
?>

In this example, the server will store the uploaded file in a directory named "videos", and the file name will be the same as the file name when the user uploaded it.

2. Video playback

Next, we need to add a component for playing short videos to the mini program. This can be achieved using the <video> tag of the WeChat applet. The following is a simple sample code:

<video src="https://your_domain/videos/your_video.mp4" controls></video>

In this example, we set the video source link to the path where short videos are stored on the server, so that users can play uploaded short videos in the mini program.

3. Video editing

In order to implement the video editing function, we can use the open source video editing library FFmpeg. First, you need to install FFmpeg on the server and set the correct path.

The following is a simple PHP function example for calling the FFmpeg library to crop short videos:

<?php
    function cropVideo($input, $output, $start, $duration) {
        $ffmpeg_path = 'path/to/ffmpeg'; // FFmpeg路径，根据实际情况进行设置
        $command = "{$ffmpeg_path} -i {$input} -ss {$start} -t {$duration} -async 1 {$output}";
        exec($command, $output, $return_var);
        if ($return_var == 0) {
            echo '视频剪裁成功！';
        } else {
            echo '视频剪裁失败：' . implode("
", $output);
        }
    }
    
    cropVideo('videos/your_video.mp4', 'videos/cropped_video.mp4', '00:00:05', '00:00:10');
?>

In this example, we define a function named cropVideo, by calling FFmpeg library to implement the clipping function. The cropping results will be saved in the "cropped_video.mp4" file.

4. Mini program interface design

In a mini program, you can implement a user interaction interface by adding components such as buttons and text boxes. Users can select a video, enter the trimming start time and duration, and click a button to implement the video trimming function.

The following is a simple small program sample code:

<view class="container">
    <view class="upload">
        <button bindtap="chooseVideo">选择视频</button>
        <input placeholder="剪裁起始时间" bindinput="inputStart">
        <input placeholder="剪裁持续时间" bindinput="inputDuration">
        <button bindtap="cropVideo">剪裁视频</button>
    </view>
    <view class="player">
        <video src="{{videoSrc}}" controls></video>
    </view>
</view>

In this example, we added a button to select a video and bound the chooseVideo function; added two input boxes , and bind the inputStart and inputDuration functions; at the same time, add a button to crop the video, and bind the cropVideo function. Video playback uses the <video> tag mentioned earlier.

Through the above code, we successfully implemented the playback and editing functions of short videos using PHP and mini programs. Users can upload, store and play short videos, and use PHP to call the FFmpeg library to trim the videos. This provides users with a rich and diverse short video uploading and editing experience.

Of course, the above code is only a simple example, and factors such as security and optimization also need to be considered in actual projects. However, I hope that the introduction of this article can help readers understand and get started with the implementation of short video playback and editing functions in PHP and mini programs.

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