How to add text to vue clips

Vue is a popular JavaScript framework that can be used to develop highly responsive web applications. Editing and adding text are core processes in creating videos and animations. In Vue, these functions can be easily implemented using third-party plugins or custom components. Below we will introduce how to use the Vue-Video-Player plug-in and custom Vue components in Vue to realize the functions of editing and adding text.

1. Use the Vue-Video-Player plug-in to edit and add text

Vue-Video-Player is an easy-to-use HTML5 video player library that provides flexible APIs and users Interface components. We can use Vue-Video-Player to clip and add text. The following are the specific steps:

1. Install Vue-Video-Player

In the Vue project, we can use the npm package Manager to install Vue-Video-Player. Enter the following command in the terminal to install:

npm install --save vue-video-player

2. Introduce Vue-Video-Player

into the Vue component In the Vue component, we need to use the import statement to import the Vue-Video-Player and CSS files. The following is the reference code:

< script>
import VideoPlayer from 'vue-video-player'
import 'video.js/dist/video-js.css'
import 'vue-video-player/src/custom-theme.css '

export default {
components: {

VideoPlayer

},
data () {

return {
  playerOptions: {
    controls: true,
    autoplay: false,
    sources: [{
      src: 'your_video_url.mp4',
      type: 'video/mp4'
    }]
  }
}

}
}

3. Use Vue-Video-Player to implement the editing function

Vue-Video-Player provides a screenshot function, which we can use to implement editing. The following is the reference code:

this.$refs.videoPlayer.shoot()

This code intercepts the current video frame and returns a screenshot URL. We can set a variable to store this URL.

4. Use Vue-Video-Player to add text function

Vue-Video-Player also provides a popup component, which can add text to the video. The following is the reference code:

< script>
import { Popup } from 'vue-video-player'

export default {
components: {

Popup

},
data () {

return {
  playerOptions: {
    controls: true,
    autoplay: false,
    sources: [{
      src: 'your_video_url.mp4',
      type: 'video/mp4'
    }]
  },
  showPopup: false,
  text: '',
  style: {
    position: 'absolute',
    top: '50%',
    left: '50%',
    fontSize: '30px'
  }
}

},
methods: {

addText () {
  const video = this.$refs.videoPlayer.video
  const canvas = document.createElement('canvas')
  canvas.width = video.videoWidth
  canvas.height = video.videoHeight
  const ctx = canvas.getContext('2d')
  ctx.drawImage(video, 0, 0)
  ctx.font = this.style.fontSize + ' Arial'
  ctx.fillStyle = '#fff'
  const x = canvas.width / 2 - ctx.measureText(this.text).width / 2
  const y = canvas.height / 2 + this.style.fontSize / 2
  ctx.fillText(this.text, x, y)
  const imgUrl = canvas.toDataURL('image/png')
  this.$refs.videoPlayer.addText(imgUrl, this.style)
  this.showPopup = false
}

}
}

In the above code, we use the popup component to create a popup box to edit text and use textarea to bind text variables. In the addText method, we add text to the video frame using the canvas element and pass the generated image URL to the Vue-Video-Player’s addText function.

2. Use custom Vue components to implement clipping and adding text

By customizing Vue components, we can more flexibly implement clipping and adding text. The following are the specific steps:

1. Create a Vue component

In the Vue component, we can use the video element to play the video and the canvas element to edit the video frame. The following is the reference code:

< script>
import { Popup } from './Popup.vue'

export default {
components: {

Popup

},
props: {

videoUrl: {
  type: String,
  required: true
}

},
data () {

return {
  showPopup: false,
  text: '',
  startX: 0,
  startY: 0,
  endX: 0,
  endY: 0,
  videoWidth: 0,
  videoHeight: 0
}

},
mounted () {

const video = this.$refs.video
video.addEventListener('loadedmetadata', () => {
  this.videoWidth = video.videoWidth
  this.videoHeight = video.videoHeight
})

},
methods: {

onMouseDown (event) {
  const canvas = this.$refs.canvas
  const rect = canvas.getBoundingClientRect()
  this.startX = event.clientX - rect.left
  this.startY = event.clientY - rect.top
},
onMouseMove (event) {
  const canvas = this.$refs.canvas
  const rect = canvas.getBoundingClientRect()
  this.endX = event.clientX - rect.left
  this.endY = event.clientY - rect.top
},
onMouseUp () {
  const canvas = this.$refs.canvas
  const ctx = canvas.getContext('2d')
  ctx.clearRect(0, 0, canvas.width, canvas.height)
  const video = this.$refs.video
  ctx.drawImage(video, 0, 0, canvas.width, canvas.height)
  ctx.beginPath()
  ctx.rect(this.startX, this.startY, this.endX - this.startX, this.endY - this.startY)
  ctx.stroke()
},
shoot () {
  const canvas = this.$refs.canvas
  const ctx = canvas.getContext('2d')
  const video = this.$refs.video
  ctx.drawImage(video, 0, 0, canvas.width, canvas.height)
  const imgUrl = canvas.toDataURL('image/png')
  window.open(imgUrl)
},
addText () {
  const canvas = this.$refs.canvas
  const ctx = canvas.getContext('2d')
  ctx.font = '30px Arial'
  ctx.fillStyle = '#fff'
  const x = canvas.width / 2 - ctx.measureText(this.text).width / 2
  const y = canvas.height / 2 + 30 / 2
  ctx.fillText(this.text, x, y)
  const imgUrl = canvas.toDataURL('image/png')
  window.open(imgUrl)
  this.showPopup = false
}

}
}

2. Create Popup component

Popup component can quickly create a pop-up box, which consists of a slot and a close button. Composed of div elements. The following is the reference code:

<script><br>export default {<br> props: {</p> <pre class="brush:php;toolbar:false">show: { type: Boolean, required: true }</pre> <p>}<br>}<br></script>

The above are two ways to use the Vue-Video-Player plug-in and custom Vue components to achieve clipping and adding text. We can choose different methods to implement video editing functions according to actual needs. Through these technologies, we can create stunning web videos and animations, achieving a more flexible and personalized video editing experience.

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