[FFmpeg-devel] MAX_STREAMS

[Derk-Jan Hartman]

On 21 jun 2009, at 06:47, Erik Van Grunderbeeck wrote:
> Hello; Q:

> Is the max stream count in avformat.h; currently set to 20; maxed at  
> 20 for
> a specific reason?
>
> Reason I ask is that I have a DVD here (Pirates of the Caribbean/The  
> curse
> of the black pearl/special extended version) that has 39 (yes, 39)  
> streams
> in it.
>
> A count shows 1 video stream, 6 audio streams, and 32 (?) subtitle  
> streams.
> The 32 may actually be a encoding problem for this disk, but what I  
> did find
> out is that the id's from the first 7 subtitles stream are not the  
> ones that
> are "real" subtitle streams (correlated this with the id information  
> from
> the ifo file). Stream 8 is the first "valid" sub title stream.

Those first might be forced subtitle streams (can be multiple in  
modern DVDs and not yet supported by dvdread/dvdnav I think), subtitle  
streams for the directors comments etc. It sure does count up.

DJ