WeChat applet to achieve automatic video playback imitating GIF animation effect example

<view class="container" style="width: {{videoWidth}}rpx;height: {{videoHeight}}rpx">
  <image class="image" style="visibility: {{play ? 'hidden' : 'visible'}};" id="image_{{videoId}}" src="{{poster}}" />
  <video class="video" wx:if="{{play}}" id="video_{{videoId}}" controls="{{controls}}" object-fit='contain' show-center-play-btn="{{showCenterPlayBtn}}" enable-progress-gesture="{{enableProgressGesture}}" direction="{{direction}}" enable-play-gesture="{{enablePlayGesture}}" muted="{{muted}}" loop="{{loop}}" src="{{videoUrl}}" />
</view>

.container {
    position: relative;
    width: 100%;
    height: 100%;
}
.image {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10;
    width: 100%;
    height: 100%;
}
.video {
    width: 100%;
    height: 100%;
}

Component({
    properties:
        // Video width videoWidth: {
            type: Number,
            value: 0,
        },
        // Video height videoHeight: {
            type: Number,
            value: 0,
        },
        // Video poster/cover poster: {
            type: String,
            value: '',
        },
        // Video link videoUrl: {
            type: String,
            value: '',
        },
        // Whether to display the playback progress bar controls: {
            type: Boolean,
            value: false,
        },
        // Whether to display the middle play button showCenterPlayBtn: {
            type: Boolean,
            value: false,
        },
        // Is it muted: {
            type: Boolean,
            value: true,
        },
        // Whether to display the mute button showMuteBtn: {
            type: Boolean,
            value: true,
        },
        // Whether to enable gesture control progress enableProgressGesture: {
            type: Boolean,
            value: false,
        },
        // Whether to enable gesture control playback enablePlayGesture: {
            type: Boolean,
            value: false,
        },
        // direction: {
            type: Number,
            value: 0,
        },
        //Specify the start time of playback, in seconds showPlayTime: {
            type: Number,
            value: 0,
        },
        // Video id (unique identifier)
        videoId: {
            type: String,
            value: '',
        },
        // Whether to play play: {
            type: Boolean,
            value: false,
        },
        //Whether to loop playback loop: {
            type: Boolean,
            value: true,
        },
    },
    data: {
        paly: false, // Whether to play context: null, // The created video instance object},
    lifetimes:
        attached() {
            this.videObserve();
        },
    },
    methods: {
        // Monitor whether the video component enters the visible area videObserve() {
            this._observer = this.createIntersectionObserver({
                observeAll: true,
            });

            this._observer.relativeToViewport().observe(`#image_${this.data.videoId}`, (res) => {
                //res.intersectionRatio === 0 means no intersectionif (res.intersectionRatio === 0) {
                    this.setData({
                        play: false,
                    });
                } else {
                    const ctx = this.data.context || wx.createVideoContext(`video_${this.data.videoId}`, this);
                    if (ctx) {
                        this.setData(
                            {
                                context: ctx,
                                play: true,
                            },
                            () => {
                                // The delay is to wait for the wxml node to be created, and then play it after getting the node, otherwise the playback may fail setTimeout(() => {
                                    ctx.play();
                                }, 400);
                            }
                        );
                    }
                }
            });
        },
    },
});