"legality" of different audio/subpic stream assignment orderings

[kumi]

Hi,

Consider the following PGC_VTS table snippet from a disc I was converting to DVD5 (Stream 1 and 3 were unwanted, stripped DTS and director's comments):
[0000000c] Audio stream 1 status 0 [0000]
[0000000e] Audio stream 2 status 33024 [8100]
Audio stream 2 uses stream nr.: 1
[00000010] Audio stream 3 status 0 [0000]
[00000012] Audio stream 4 status 0 [0000]
[00000014] Audio stream 5 status 0 [0000]
[00000016] Audio stream 6 status 0 [0000]
[00000018] Audio stream 7 status 0 [0000]
[0000001a] Audio stream 8 status 0 [0000]
Is this an "illegal" situation? i.e. does the first stream have to be assigned to a stream nr.?

What about a gap in between stream assignments? Like so:
[0000000c] Audio stream 1 status 32768 [8000]
Audio stream 1 uses stream nr.: 0
[0000000e] Audio stream 2 status 0 [0000]
[00000010] Audio stream 3 status 33280 [8200]
Audio stream 3 uses stream nr.: 2
[00000012] Audio stream 4 status 0 [0000]
[00000014] Audio stream 5 status 0 [0000]
[00000016] Audio stream 6 status 0 [0000]
[00000018] Audio stream 7 status 0 [0000]
[0000001a] Audio stream 8 status 0 [0000]

I recently read a comment about how how such a gap in subpicture stream assignments could cause compatibility problems. I can't seem to find the thread, but that got me wondering if certain audio stream assignment orderings are also problematic. If anyone could point me in the right direction I would be most grateful.

Thanks

[blutach]

Not illegal AFAIK but better to have stream 1 filled and to have no holes. This may involve some editing of the VM commands, but not too much. Look for SetSTN in PgcEdit (http://www.videohelp.com/~r0lZ/pgcedit/index.html).

Regards

[kumi]

Hm ok, thanks for the heads up. "Better safe that sorry" right?