[MPlayer-dev-eng] NUT cleanup

[Alexander Strasser]

Alexander Strasser wrote:
> Oded Shimon wrote:
> > +			Semantic requirements
> > +
> > +If more than one stream of a given stream class is present, each one MUST
> > +have info tags specifying disposition, and if applicable, language.
> > +
> > +A demuxer MUST NOT demux a stream which contains more than one stream, or which
> > +is wrapped in a structure to facilitate more than one stream or otherwise
> > +duplicate the role of a container. any such file is to be considered invalid.
> 
>   While i find the idea of the section good i find it way to strict.
> Or wrongly expressed --- i am not sure...
> 
>   What for example if i remux a file from a different format with multiple
> streams per class but the original file does not contain fields for
> disposition (and/or language). I don't want my muxer to just insert `random'
> valid fields just to be compliant with the nut specification. IMHO that
> would even be backwards with regard to the spirit of the semantic requirements
> section. So I will end up with a invalid nut file.
>   There might also be cases with multiple streams per class which don't
> need dispostion at all.
> 
>   Similar thing but maybe not so important goes for the second paragraph,
> what is wrong with demuxing the suspicious stream `at level 1' for trying
> to repair the sick combination. Ok, it might be nontrivial, but maybe possible.
>   And i think the level 2 demuxing is out of the scope of the nut demuxer anyway.
> 
>   I might be wrong or too tired or both, anyway waiting for some comments
> to correct me in that case.

  After reading first comments i think this should be discussed a
bit further. I am in a hurry now.

  Anyway, i don't mind if it gets commited in this form for now.

  Alex (beastd)