The official MPEG press release can be downloaded from the MPEG Web site. Some of the above mentioned topics are detailed here and of course, there’s an update on DASH-related matters at the end.
Call for Proposals on Screen Content
Screen content refers to content coming not from cameras, but from screen/desktop sharing and collaboration, cloud computing and gaming, wirelessly connected displays, control rooms with high resolution display walls, virtual desktop infrastructures, tablets as secondary displays, PC over IP, ultra-thin client technology, etc. Also mixed-content is within the scope of this work item and may contain a mixture of camera-captured video and images with rendered computer-generated graphics, text, animation, etc.
Although this type of content was considered during the course of the HEVC standardization, recent studies in MPEG have led to the conclusion that significant further improvements in coding efficiency can be obtained by exploiting the characteristics of screen content and thus, a Call for Proposals (CfP) is being issued for developing possible future extensions of the HEVC standard.
Companies and organizations are invited to submit proposals in response to this call –issued jointly by MPEG with ITU-T VCEG. Responses are expected to be submitted by early March and will be evaluated during the 108th MPEG meeting. The timeline is as follows:
2014/01/17: Final Call for Proposals
2014/01/22: Availability of anchors and end of editing period for Final CfP
2014/02/10: Mandatory registration deadline
One of the contact persons (see Section 10) must be notified and an invoice for the testing fee will be sent after registration. Additional logistic information will also be sent to proponents by this date.
2014/03/05: Coded test material shall be available at the test site. By this date, the payment of the testing fee is expected to be finalized.
2014/03/17: Submission of all documents and requested data associated with the proposal.
2014/03/27-04/04: Evaluation of proposals at standardization meeting.
2015: Final draft standard expected.
It will be interesting to see the coding efficiency of the submitted proposals compared to a pure HEVC or even AVC approach.
Committee Draft for Green Metadata
Green Metadata, formerly known as Green MPEG, shall enable energy-efficient media consumption and achieved Committee Draft (CD) status at the 107th MPEG meeting. The representation formats defined within Green Metadata help reduce decoder power consumption and display power consumption. Clients may utilize such information for the adaptive selection of operating voltage or clock frequencies within their chipsets. Additionally, it may be used to set the brightness of the backlights for the display to save power consumption.
Green Metadata also provides metadata for the signaling and selection of DASH representations to enable the reduction of power consumption for their encoding.
The main challenge in terms of adoption of this kind of technology is how to exploit these representation formats to actually achieve energy-efficient media consumption and how much.
Dr. Christian Timmerer is the Head of Research and a co-founder at Bitmovin. His work focuses on cutting edge video streaming solutions for the web, like MPEG-DASH and HEVC, and making higher resolution video, like Ultra-HD, easily accessible to the consumers. Timmerer is an active member of ISO/IEC MPEG and editor for the MPEG-21, MPEG-M, MPEG-V, and MPEG-DASH standard, and thus has also a wide range of knowledge, overview and contacts within the international technology market. In his position of Associate Professor at the Alpen-Adria University Klagenfurt he had published more than 200 papers at international conferences and journals.