Like you see in attachment, the Cast to Chromecast function doesn't work. I have X9S (sw v. 1.2.3) and Chromecast 2015.
can't see the picture. but if you can't cast video via chromecast, you should try reset the chromecast and check if your chromecast is the latest version. If it's not, just renew it. Since I can't see your picture, I can't be sure what the problem is. Maybe if you wanna play local video files via chromecast on TV, you can try video conversion. I happen to use a converter recently, HD video converter factory pro. it enables you to convert mkv to chromcast, TS to chromecast, or any other video file which can't be played via chromecast.