avcodec.Rational struct returns contains unexported attributes

[russ666]

C-lang struct C.struct_AVRational, presented as avcodec.Rational contains lowercased num and den attributes, which couldn't be accessed from external package. The only way to access it is by using reflections.

[targodan]

Yes, I see. I guess one would need to add exported accessing methods to the struct.

If anyone can to it, feel free to do so, as it may take some time before I can get around to do this.