To upload the image to our server, we are using postFile() on videoAPIService. Let's create this service now. Inside the client/app/services folder, create a file named video.api.service.ts and update it, as shown here:

import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs/Observable';

@Injectable()
export class VideoAPIService {
    constructor(private http: HttpClient) {}
    postFile(threadId: string, videoBlob: File): Observable < any > {
        const formData: FormData = new FormData();
        formData.append('video-reply', videoBlob, videoBlob.name);
        return this.http.post < any > (`/api/upload-video/${threadId}`, formData);
    }
}

Finally, we need to add this service as a provider in client/app/app.module.ts. First, we will import VideoAPIService into client/app/app.module.ts:

import { VideoAPIService } from './services/video.api.service';

And update, providers as shown here:

// SNIPP SNIPP
providers: [
    AuthService,
    AuthGuardLogin,
    AuthGuardAdmin,
    UserService,
    ThreadService,
    MessageService,
    VisionAPIService,
    VideoAPIService,
    {
        provide: HTTP_INTERCEPTORS,
        useClass: TokenInterceptor,
        multi: true
    }
],
// SNIPP SNIPP

Save all the files and continue.