[XviD-devel] divx5, bframes and non-coded vops

[Marc FD]

Are you 100% sure the DivX5 decoder is able to decode PBB... gops ?
i thought it was only designed to decode PB PB PB gops.
i mean, is it able to decode more than 1 bframe in a row ?
because the encoder seems to be unable to encode more than 1 bframe between
2 pframes.

just my ex-DivX5 user 0.02 cents

MarcFD

----- Message d'origine -----
De : "peter ross" <suxen_drol@hotmail.com>
À : <xvid-devel@xvid.org>
Envoyé : mercredi 2 octobre 2002 15:06
Objet : Re: [XviD-devel] divx5, bframes and non-coded vops


> >g'day all,
> >
> >in packed-avi files (divx5.02+brfames), the divx5 decoder REQUIRES
> >n_vops otherwise it "forgets" to display the refernce pframe.
> >this is rather hilarious!
>
> ive patched xvidcore to give improve compatbility with the divx5
> decoder. the bug where-by p-vops with [pb]-frames bug are decoder
> immediality still exissts.
>
> its either caused by
> * invalid timestamps. however, i think xvid timestamps are 100%
>    correct now (thx gruel).
> * divx5 does not to detect the b-vop start code. maybe theres some
>    magic bits between the p-vop and b-vop; maybe it has to be 8-bit
>    padded, OR not padded?
> * divx5 fails to decode the b-vop, and returns an error leaving the
>    the p-vop in memory. highly unlikely.
> * or, something else???
>
> damn this. i though i had divx5 compatibility figured out when i
> first uploaded the packed/dx50 code.
>
> -- pete
>
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