The Video Services Forum (VSF) has released an ancillary feature that enhances the RIST specifications with source adaption. The feature, detailed in TR-06-4 Part 1, Source Adaptation, is the first in a series of ancillary features for the RIST Specifications.
The new specification defines a protocol for a stream receiver to provide feedback information if a network’s capacity falls below a specific stream rate so that action can be taken.
The RIST protocol is designed to reliably transport video over the Internet for any use case, but is typically used for professional media workflows such as news and sports contribution, remote production, affiliate distribution and primary distribution.
Dr Ciro Noronha, president, the RIST Forum, commented: “The RIST Profiles have been designed to transport live video content in a reliable way by identifying and recovering from any packet loss incurred. This update introduces a feature to further improve reliable delivery, enabling video providers to contribute content over the public internet even more seamlessly than before.”
Rick Ackermans, co-chair of the RIST Activity Group, added “The RIST Activity Group is continually working to develop additional RIST specifications and features. It is anticipated that the new source adaption ancillary feature will make a real difference for contributing content over the public internet. As the Activity Group develops and releases further ancillary features in the series, the technical recommendations documents will also be made available for open access.”
