Itseez/opencv — pull request #510 by gferry (2013-02-20 13:29:59+00:00)
Title: fix for issue #2815

- libavcodec issue
- some decoders alter AVCodecContext width/height values, in a wrong way
- eg. in issue 2815, vp6f decoder changes these values, resulting in distorted / invalid frames
- this patch forces default AVCodecContext values