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CABR Library
CONTENT-ADAPTIVE VIDEO ENCODING
CABR LIBRARY ADVANTAGES
SIMPLE API FOR EASY INTEGRATION
Encoder provides input frame, initial QP and initial reconstructed frame
CABR library provides several candidate QPs
Encoder provides candidate reconstructed frames
CABR library provides final decision on which frame to use
BASED ON BEAMR’S PATENTED QUALITY MEASURE
Subjective quality measure highly correlated with human vision
Verified using the ITU BT.500 standard for image quality
Market-proven with petabytes of media items already optimized by Beamr
Backed by the 37 granted patents
IMPROVED QUALITY AND LOWER BITRATE
CABR encodes are the same quality as VBR encodes, at lower bitrates
Users with a given bandwidth can stream a higher quality ABR layer due to CABR in 83% of the cases
The average bandwidth savings is 49% across all ABR layers, resulting in lower congestion and lower latency
FEATURES & BENEFITS
CONTENT-ADAPTIVE RATE-CONTROL
Beamr’s content-adaptive frame-level rate control adapts encoding to the content at the frame level, guaranteeing the highest video quality at the lowest bitrate.
Offers fully automatic operation - no longer do you need to produce content specific profiles, such as animation, sports, drama, etc to achieve the best video quality for a given bit budget.
Beamr’s CABR library can be integrated with any software or hardware block-based video encoder such as AVC, HEVC, VVC, VP9 and AV1.
HIGHEST QUALITY AT THE LOWEST BITRATE
Using Beamr’s CABR Library, encoders can create lower bitrate encodes that preserve the full quality of target bitrate encodes.
When integrated with an HEVC encoder, the Beamr CABR Library can create Full HD encodes as low as 1.5 Mbps, and 4K HDR encodes as low as 10 Mbps.
The content-adaptive technology at the heart of Beamr’s CABR library is fully HDR compliant, supporting SDR, HDR-10, Dolby Vision and HLG.
PATENTED TECHNOLOGY
Beamr’s patented quality measure was tested according to the strict requirements of the ITU BT.500 standard for image quality assessment, and proven to have very high correlation with subjective (human) results.
Beamr has been granted 37 international patents on systems and methods for perceptual quality measurement, content-adaptive encoding and transcoding of images and video streams, and performance optimizations for content-adaptive encoding.
BENEFITS OF CABR BITRATE REDUCTION
By using Beamr’s CABR library to reduce the bitrate of encoded streams, customers can fit more channels into constrained network pipes, and lower their CDN and storage costs.
User experience is also improved using the CABR library: The encoded streams start faster, and have less buffering issues due to their low bitrate.
Applying the content-adaptive encoding made possible by Beamr’s CABR library enables reaching a wider audience with 4K over broadband and HD over mobile.
INTEL MEDIA SDK PROTOTYPE
Beamr and Intel have integrated the Beamr CABR library with the Intel® Media SDK which controls the Intel GPU hardware encoder, to create a solution that can deliver real-time content-adaptive performance for cloud gaming, live sporting events, and other latency-sensitive video applications, consuming 90% less power than a software-only solution.
Ari Rauch, vice president at Intel Corporation, commented on the joint solution: “Beamr brings the benefits of hardware video encoding, using Intel’s Gen 11 graphics engine, combined with their CABR rate control that guarantees the fewest bits per frame, with no visual degradation, based on a predetermined quality target―all while operating in real time”.
SILICON IP
The Beamr CABR library is also available as a Silicon IP block for integration into dedicated video encoding ASICs, GPUs, CPUs and application processors.
Beamr’s CABR library is available at various levels of implementation, including Python, C code, System C and TLM, with detailed performance and latency estimation for typical silicon IP processes.