I have a couple of motion background videos with us. I just wanted to embedded or placed in an existing formatted ppt file as a background video.

I have gone to Slide Master, Place the video using Insert --> Video from PC. Once it is inserted I have gone to Animations tab, choose the option "Play". The video does not played even I choose play option.

Whereas I have inserted the same video in Newly created ppt (Ctrl-N), it was working fine without any issue.

Please help or guide me on how to use the motion videos on the existing PPTx file.