Matroski

1 I get a mkv, it plays fine but oddly it is not readable by Tsmxr 2 I rewrite it with Internet Video Converter using direct stream copy 3 the new mkv plays fine also and is read by Tsmxr so I build a BD 4 I burn this BD structure on a DVD and I get no error message (that's why I can't send one...) 5 my Panasonic BD player see an "AVHCD disk" but refuses to play it (incompatible disk message ???°l*$!*!$)