UltraGrid 1.7. Release

CESNET and the Laboratory of Advanced Networking Technologies (SITOLA) are happy to announce a new stable release of the UltraGrid software for low-latency and high-quality video transmissions over IP networks. The current stable release is versioned 1.7 and is available for download for all supported platforms at http://www.ultragrid.cz/.

The major news in this release include:

• NAT traversal support including Port Control Protocol (PCP) and Port Mapping Protocol (PMP). See https://github.com/CESNET/UltraGrid/wiki/NAT-traversal for more details.
• Sever mode as an addition to a traditional peer-to-peer paradigm in UltraGrid. If one of the parties connecting has a public IP address it can act as a server and wait for a connection from the other party. In this mode the stream sent back from the server should pass through NAT and even a firewalls (depending on configuration) automatically. See https://github.com/CESNET/UltraGrid/wiki/NAT-traversal#server-mode for more details.
• 360 video support including own GPU accelerated 360 video stitcher and VR headsets support.
• NDI 5 support and a support for up to 16-bit video transmissions with NDI.
• Improved codecs handing, higher video bit depth and proper range/color spaces support with various codecs (Cineform, libavcodec (libx264, VP9, NVENC)).
• New codecs support through libavcodec (SVT-AV1, rav1e, dav1d).
• Accelerated video decoding on Mac OS through Videotoolbox.
• Accelerated H.264 video encoding on Raspberry Pi.
• Jack audio support fixes.
• "Ultra" low latency preset for audio processing as well as other smaller improvements towards lower audio latency in certain setups.
• Up-to-date Blackmagic Decklink SDK support, updated Deltacast API support.
• Improved ARM architecture support including Apple M1.
• Possibility to select specific encoder for each codec through UltraGrid GUI.

This release is one of the largest so far. There have been 825 files changed with 29115 insertions and 117718 deletions made in the process.

UltraGrid is available at Github (https://github.com/CESNET/UltraGrid/). Everyone in welcome to contribute to the UltraGrid development!

To follow the latest news on UltraGrid deployment at CESNET please check the UltraGrid Facebook profile at https://www.facebook.com/UltraGrid/ and the news at http://www.ultragrid.cz/.

To contact the UltraGrid team please use ultragrid-dev@cesnet.cz.