[FFmpeg-devel] [PATCH] asf-format doesn't work as stream for XBox360

Michael Niedermayer michaelni
Mon Oct 15 21:55:40 CEST 2007


On Mon, Oct 15, 2007 at 11:15:54AM +0200, Patric Stout wrote:
> Vladimir Pantelic schreef:
> > Patric Stout wrote:
> >
> >   
> >> I tried to change all the other fields that showed up on the diff 
> >> between a streamed wmv and a stored wmv, no other field did anything
> >> for the good. This is the only field that makes it to work, or breaks
> >> it. So I am pretty sure this is what the Xbox expects.
> >>     
> >
> > IIRC asf "live" streams have the broadcast flag = 1, seekable = 0 and
> > the *size* is not 0 but the size of the ASF header plus the data header,
> > so everything up to the first packet.
> >
> >   
> You are almost correct ;) The only other allowed number which my XBox
> accepted, besides the very big value, is 50, which is exactly the
> current size after writing the header - asf->data_offset. Basicly, all
> bytes written after the data_offset at that time (so not including the
> ASF header). This is identical with the way the data-chunk-size is later
> on in the code patched up for stored asfs.
> Also, because the url is streamed, the broadcast flag already was set to
> 1 correctly.
> So, in a third attempt, here is the patch setting the data-chunk-size to
> 50 by default. I had a bit of trouble getting a good comment line, feel
> free to edit it to something better ;)
> It has to be noted that this can't really damage anything, as for
> example mplayer ignores this value when reading a stream, and both
> Windows Media Player as XBox360 play this perfectly. And all stored asfs
> get this value overridden anyway.

patch ok

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

I do not agree with what you have to say, but I'll defend to the death your
right to say it. -- Voltaire
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