How to compress video in uniapp

With the rapid development of mobile Internet, short videos have become an important way for people to entertain and share their daily lives. In the field of APP development, uniapp is undoubtedly a popular cross-platform development framework. So, how to perform video compression in uniapp? This article will introduce this in detail.

1. What is video compression?

Before we start to introduce how uniapp performs video compression, let’s first understand what video compression is. Video compression refers to compressing the original video data to make the video file size smaller while ensuring the clarity and smoothness of the video. The main purpose of video compression is to save storage space and network transmission bandwidth, allowing users to share and browse videos more quickly.

2. Video compression method in uniapp

To perform video compression in uniapp, you need to use the uni.compressVideo() method in uniapp. The function of this method is to compress the video and return the compressed video path. The specific parameters are as follows:

uni.compressVideo({
    src: '', // 要压缩的视频路径
    quality: 1, // 压缩质量，有效值为 1 到 3，默认为 1
    success: (res) => {
        console.log(res)
    },
    fail: (err) => {
        console.error(err)
    }
});

Among them, the src parameter is the video path to be compressed, and the quality parameter is the compression quality. The value range is 1-3, and the higher the value Larger means higher compression quality. The success callback returns a res object containing the compressed video path.

The sample code is as follows:

// 获取视频路径
uni.chooseVideo({
    success: (res) => {
        // 对视频进行压缩处理
        uni.compressVideo({
            src: res.tempFilePath,
            quality: 2,
            success: (res) => {
                console.log('压缩后的视频路径：', res.tempFilePath);
            },
            fail: (err) => {
                console.error(err)
            }
        })
    }
})

3. Notes

When using the uni.compressVideo() method for video compression, you need to pay attention to the following matters :

1. The process of compressing video is time-consuming. Please ensure that no other operations are performed during the video compression to avoid affecting the compression effect and user experience.
2. The compressed video path is not necessarily the same as the original video path. You need to pay attention to the change of the path.
3. Choose the appropriate compression quality based on actual needs. Compression quality that is too high or too low will affect the viewing experience of the video.
4. Exceptions or failures may occur during the compression process, and error handling needs to be performed and user-friendly error messages prompted.

4. Summary

Through the above introduction, we can find that video compression in uniapp is very simple and only requires a few lines of code. Video compression has become an indispensable link in the field of short videos. It can greatly save storage space and network transmission bandwidth, making it easier for users to upload, share and browse short videos.

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