Autoplay of Video and Audio not working anymore

Help & Support
10

OK, I had to add the mp4 suffix to the default list. This was it! In other words: mp4 was NOT in the list by default. Now it is:
.asf .asx .avi .div .divx .dvr-ms .flv .m1v .m2v .mkv .mlv .mov .mp2v .mp4 .mpe .mpeg .mpg .mpv2 .wm .wmv .wtv