JCT-VC meeting in Geneva

NGCodec was at the JCT-VC/MPEG Meeting in Geneva, to help the industry to continue with the development of the HEVC standard. This was a very busy meeting where we did substantial work over 10 days. JCT-VC continued working on version 2 and some further enhancements related to scalability. They were a number of additional MPEG activities that were conducted outside JCT-VC.

The work on HEVC version 2 (range extensions) was very active at this meeting, improving on some of the techniques that were added to the working draft at the previous meeting. These techniques are mostly effective for screen content and deliver very positive results with this type of material compared with HEVC version 1. Substantial work was done on Intra Motion Compensation, extensions to Transform Skipping and RDPCM, we reviewed some new proposals on Palettes and we decided to work between meetings on those and decide based on the results at the next meeting. The version 2 specification is planned to be approved at the begging of Q2 of 2014. It is planned that includes new profiles: Main 12, Main 4:2:2 12, Main 4:4:4 12, Main 4:2:2 10,  Main 4:4:4 10, Main 4:4:4 8, monochrome 12, monochrome 16 and a number of all Intra profiles. It was agreed that the new 4:2:0 and 4:2:2 profiles will not have the new tools that are effective for screen content. 

MPEG decided to work on a Call for Proposals in relation to techniques specially designed for screen content material that will be part of new profiles that are envisioned to reach FDAM stage in October 2015. This will be in addition to the current work that is part of range extension that will be reaching FDAM stage in April 2014.

Further work was conducted on the text for the scalable technology based on HEVC (called SHVC). It is the intention to reach the FDAM stage in July 2014. This will be suitable for applications that required scalability (resolution, frame rate, quality, color gamut etc.). Most of the work on this project was on high level syntax clean ups, but we had some good work on color gamut and bit-depth scalability, we had some positive results presented at this meeting and we are expecting more important results at the next meeting.

MPEG  continued the work on a royalty free video standard. It continued on the Video Coding for Browsers, based on the previous work done by Google on VP8, it was decided to extend the timeline and a new version of the working draft was created a this meeting. MPEG is also driving two additional activities, one based on H.264 CBP (WebVC) and one started from scratch (IVC).

There were some further study of adding some additional interlaced video coding tools to HEVC (based on PAFF), they were limited evidence being presented at this meeting and it was agreed to present some further evidence at the next meeting, it was generally perceived that current version of HEVC may be suitable for the efficient coding of interlaced content and with substantial gains compared with H.264/AVC.

Further work was conducted in relation to the support of the XYZ colour space.

There were a number of 3D/multiview related activities, including AVC+depth, MVC+depth, Multiview HEVC, those were worked on by JCT-3V.

BlogAlberto Duenas