[vlc-devel] [PATCH 2/2] avcodec: use i_aligned_width and i_aligned_height

Rémi Denis-Courmont remi at remlab.net
Thu Dec 11 21:01:45 CET 2014

Le jeudi 11 décembre 2014, 20:57:42 Jean-Baptiste Kempf a écrit :
> On 11 Dec, Rémi Denis-Courmont wrote :
> > - The vertical and horizontal offsets of the video:
> > To my understanding, this was never implemented in VLC (and rarely occurs
> > in real life, but it is definitely specified at least in H.264).
> It exists in theora as one can see here:
> http://v2v.cc/~j/theora_testsuite/offset_test.ogv
> VLC correctly displays this, and we've tested and retested that this
> patchset does not break it.

As far as I know, none of the VLC video filters deal with decoder crop. They 
all assume either:
- that the picture starts at top/left (0x0), or
- that the picture spans the whole width and height ("bleeding").

With no filters, it might just work. But the support is still missing in even 
most decoders.

Rémi Denis-Courmont

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