Can't play video with local file in android

i have avi file in local file directory
but the problem is that I want to play video with above file path.

data[i].toURL() is above file path

  • html
 <video controls autoplay width="{{top_box_width}}" height="{{top_box_height}}">
        <source [src]="play_path" type="video/mp4">
  • .ts

let myURL = normalizeURL(data[i].toURL() ) + "#t=0.1";
          let savePath = this.sanitizer.bypassSecurityTrustResourceUrl(data[i].toURL());
          this.play_path = myURL

both myURL and savePath is not playing video…
how can I play video?
thank you