[XviD-devel] BVOP problem

Michael Militzer michael at xvid.org
Thu Oct 4 16:57:01 CEST 2007


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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