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Discussion on: Create a Video Party App With Rails Part 2: Building the Frontend

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kamalpandey profile image
kamalpandey

Hi Ben,

Could you help me with this ?

I am trying to implement group video functionality and I have following code

class App extends Component {
  this.state = {
     subscribers: [],
     subscriberVideos: [],
     screenVideo: undefined,
     publisherVideo: undefined,
     publisher: undefined,
  }
}
async start() {
  let publisher = OT.initPublisher(null, this.defaultPublisherProps, error => {
    if(error) {
    }  
  })
 publisher.on('videoElementCreated', this.onPublisherVideoElement);
 this.state.otSession.publish(publisher, error => {
    if (error) {
   }
   this.setState(() => {
     return { publisher: publisher };
   }
  }
}

onPublisherVideoElement = event {
  this.setState(() => {
   return { publisherVideo: event.element }
   });
  }
}
onPublisherScreenElement = event => {
  this.setState(() => {
    return { screenVideo: event.element }
 }
}
onSubscriberVideoElement = event => {
   this.setState(() => {
      return { 
        subscriberVideos: [...this.state.subscriberVideos, event.element]
      }
     }
   })
}
onSessionStreamCreated = event => {
  let subscriber = this.state.otSession.subscriber(event.stream, null, this.defaultSubscriberProps, error => {
     if (error) {
     }
    if (event.stream.videoType == 'screen') {
      subscriber.on('videoElementCreated', this.onPublisherScreenElement);
      this.setState(() => {
        return { screenSubscriber: subscriber };
      })
   } else {
     subscriber.on('videoElementCreated', this.onSubscriberVideoElement);
       if (this.props.mdm === "m") {
          this.setState((prevState) => {
             return {
               subscribers: [...this.state.subscribers, subscriber]
             }
          }
        }
     else {
       return { subscribers: [...this.state.subscribers, subscriber] }
     }
   }
  }
}

While showing subscribers I am doing

showSubscribers() {
    return this.state.subscribers.filter(subscriber => subscriber.stream !== null).map((subscriber, index) => {
       return(
          <VideoSubscriber
             key={index}
             otok={this.otok}
             subscriber={this.state.subscribers[index]
             subscriberVidoe={this.state.subscriberVideos[index]
            />
       )
    }
}

But at random times the video goes black and also while some of the subscriber refresh the page it goes blank creates multiple subscirber with null stream.
How can i resolve this?

Thread Thread
bengreenberg profile image
Ben Greenberg Author

Hi Kamal,

Good to hear from you here and in the Video Ruby SDK where you raised an issue with this question and in our Community Slack! Instead of responding in 3 separate places to the same question, we're following up with you in the Community Slack.

If anyone has any questions about the Video API, or any other Vonage API, please feel free to join us in the Vonage Community Slack where we would be glad to lend a hand!