[FFmpeg-devel] Support for JPS and PNS stereoscopic images

[Martin Lambers]

Hi!

The attached patch adds the jps and pns filename extensions to
libavformat/img2.c. JPS/PNS files are simply JPEG/PNG files that
contain a stereoscopic image pair in right-left ("cross-eyed") mode.

Such files have been in use by stereo-3D hobbyists for a long time.
Today, they are produced e.g. by the NVIDIA 3D Vision software
<http://3dvision-blog.com/tag/jps-screenshots/> and by StereoPhoto
Maker <http://stereo.jpn.org/eng/stphmkr/index.html>.

Test files can be found e.g. here:
http://i2.i-2000.com/~siragusa/jpsvpns/data/

Best regards,
Martin
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