streaming issue on latest Chrome

Hello, Streaming works fine in chrome Version 54 or older and other browsers. However, some mp4 videos work and some don't for the latest chrome. Version 55.0.2883.95 (64-bit) We made the source order manifest.mpd, playlist.m3u8 We used the same tool to create the videos. That would be great if you could give us any idea about why it happened. Thanks so much