Re: *demux: SEND A BUG REPORT

[this email was disappeared - seems that I failed to subscribe, and
the server doesn't bother to send rejects. the mail was getting
through and it's just me who doesn't see it, sorry for the duplicates.]

On Thu, 2 Sep 2004 12:18:54 +0200, Bj|rn Englund  
<[email protected]> wrote:

> The last VOBU of VIDEO_TS.VOB is invalid.
> The nav packets in sector 65 of VIDEO_TS.VOB gives the following info:
>  vobu_s_ptm    0x0001e6cb
>  vobu_e_ptm    0x0003000b
>   this gives a length of 0.8 seconds which is ok.
>
>  nv_pck_lbn     0x00000041
>  vobu_ea        0x00000b99
>   this gives the length of the vobu as 2905 blocks
>
>  this gives a datarate of 2905 blocks * 2048 bytes/block / 0.8 seconds
>  => 7436800 bytes/second which is about 60Mbit/s, clearly over the
>  maximum 11 Mbit/s on a DVD.
>
> I think the multiplexer that created the .VOB has a bug.

I have the same problem and I guess we use the same tools. I guess, that
there is something stinky about the menus I created, but since there is no
way to test them (since ogle only chokes and doesn't give any indication
about the reason) it's really hard to guess where's the problem.

I have this script to create the menu of mine:

pngtopnm "menu_bg.png" | ppmtoy4m -n 1 -F25:1 -A59:54 -I t -L | mpeg2enc
-f 8 -n p -o "menu_vmgm.m2v"
mplex -f 8 -o "menu_vmgm.mpg" "menu_vmgm.m2v" "menu.mp2"
spumux "menu_vmgm.xml" < "menu_vmgm.mpg" > "menu.mpg"
dvdauthor -x "dvdauthor.xml"

mplex: mjpegtools mplex-2 version 1.6.2 (2.2.3)
DVDAuthor::spumux, version 0.6.10.

I put the files to http://narya.grin.hu/bug/ogle/ if anyone thinks they
could
help. Without the proper (debug) tools and knowledge I cannot even file
a proper bugreport against mplex? spumux? dvdauthor? ...

==[ days pass by ]==

Answering myself: the bug was probably caused along the

pngtopnm "menu_bg.png" | ppmtoy4m -n 1 -F25:1 -A59:54 -I t -L | mpeg2enc  
-f 8 -n p -o "menu_vmgm.m2v"

line, some of these create the buggy file ogle chokes on.

Using a proper mpeg (from my cam) solves the problem. *sigh*

peter


Thanks,
Peter
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