[FFmpeg-soc] BFI

[Michael Niedermayer]

On Sat, Mar 29, 2008 at 03:23:49PM +0530, Sisir Koppaka wrote:
> Thanks!
> On Sat, Mar 29, 2008 at 2:39 PM, Reimar Döffinger <
> Reimar.Doeffinger at stud.uni-karlsruhe.de> wrote:
> 
> > On Sat, Mar 29, 2008 at 11:18:49AM +0530, Sisir Koppaka wrote:
> > > Hi,
> > > I'm passing the palette using extradata to the decoder.
> > > 1)Do I have to do this for every frame? BFI has the same palette for all
> > the
> > > frames. Will extradata be refreshed to 0 after every frame by ffmpeg?
> >
> > No, extradata must remain unchanged over all the time. But please note
> > (in case you are not aware) that extradata may not be endian specific
> > (since that would break remuxing), so it might still make sense to make
> > a copy in your decoder so you have the native-endian form ready (in case
> > you set the palette every frame).
> 
> But since we're putting the bytes into extradata and we're reading from it
> again...can't we control the endianness here? 

no


> I mean, since we're storing
> them there, wouldn't the way we suppose they should be decoded be the right
> way? I couldn't get the part about breaking remuxing...can you please expand
> on it a bit more?

BFI-demux -> AVI-mux -> CD-R -later-and-different-computer-> AVI-demux -> BFI-decode

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

I have often repented speaking, but never of holding my tongue.
-- Xenocrates
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