[XviD-devel] BVOP problem

[Anand Patel]

I think you may be right with the packed bitstream problem. I read from
an AVI file, which will return a single frame. This process may un pack
the P/B VOPs.

I'll investigate further.

Thanks,
Anand

-----Original Message-----
From: xvid-devel-bounces at xvid.org [mailto:xvid-devel-bounces at xvid.org]
On Behalf Of Michael Militzer
Sent: 04 October 2007 15:57
To: xvid-devel at xvid.org
Subject: Re: [XviD-devel] BVOP problem

Hi,

from your description it actually sounds as if you're doing things
correct. Have you tried if everything works ok when you run your app
with your example stream on PC?

Actually, the frame reordering code is platform independent. I don't see
a reason why it shouldn't work on ARM. How do you feed in the input
data?
There could potentially be a problem in case your stream indicates
packed bitstream mode in the header but you then don't provide it to
xvidcore in the expected packed fashion (so don't seperate packed P/B
VOPs, don't drop the N VOPs etc.).

If you're using a stream that uses 'packed' mode (most Xvid created AVIs
do), better create a non-packed clip with xvid_encraw and test with that
for a start.

Regards,
Michael


Quoting Anand Patel <Anand.Patel at arm.com>:

> Hi,,
>
> I have the latest xvid code running on an ARM. When I decode and 
> display a video with B-Frames, the video playback appears to jump back

> and forth between frames. This only occurs on videos with b-frames.
>
> I call dec_main(...) as in the example, and test .... if 
> (xvid_dec_stats.type > 0). If so then i display the frame, else 
> continue decoding.
>
> Thanks
> Anand
>
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