After enabling the Electra plugin existing video playback is broken.
I followed Epic’s Creating the Streaming Media Source and Texture documentation here.
Epic Document link
The output i am getting in the log is this.
Last error: error=8 in MP4 playlist reader: code 1, “No moov box found before mdat in “file://D:/testproject/Content/Movies/tracks.mp4”. Make sure the video is fast-startable.”