The Joint Collaborative Team on Video Coding (jct-vc) of itu-t wp3/16 and iso/iec jtc 1/ sc 29/ wg 11 held its tenth meeting during 11-20 July 2012 at the City Conference Centre (ccc), a k. a

JCTVC-J0491 AHG9: Mental Cross-check for JTCVC-J0073 - Graceful Handling of Frame-Packed Pictures by Ignorant Decoders [S. Deshpande (Sharp)] [late]
JCTVC-J0458 AHG9: Mental cross-check of JCTVC-J0073 [Y.-K. Wang (Qualcomm)] [late]
JCTVC-J0198 AHG9: Frame packing arrangement SEI message modification [M. Arena, P. Sunna (RAI)]

Frame packing stereo 3D coding using frame-packing arrangement SEI is already supported in the current draft. However, due to the geometrical layout of the composite frame that contains both the left and the right views, one issue is compatibility with 3D decoders while maintaining 2D service compatibility.

Document JCTVC-I_Notes_dD suggested to use the cropping window for 2D compatibility in order to avoid 2D receivers to pay attention to the SEI message.

This contribution is releted to JCTVC I0072 presented at the 9^th JCT-VC Geneva meeting. That document asked for a technical solution to provide compatibility between stereo 3D and 2D receivers when frame packing arrangement is used. In order to answer this request, this proposal suggests two alternative solutions that modify the frame packing arrangement SEI message.

In spirit similar to J0070: In case of FPA SEI message another cropping window is defined. In case that cropping of the first view would be defined as normative, this would mean that any decoder that follows this SEI message would not be conforming.