騰訊雲:自研視頻編解碼芯片「滄海」已量產並投用數萬片
騰訊雲公布,其自研視頻編解碼芯片「滄海」已經量產並投用數萬片。在雲遊戲、直點播等場景中,「滄海」目前已面向騰訊自研業務和公有雲客戶提供服務。在最新視頻壓縮領域最具影響力的頂級賽事MSU硬件視頻編碼比賽結果中,「滄海」在參加的兩個賽道8項評分中,全部獲得第一。
從各項指標看,在同碼率下,相較於業界GPU等標品硬件,「滄海」能大幅改善畫面質量;在120fps的高幀率檔位上,同等質量下,「滄海」比行業領先水平進一步節省10%以上的碼率;另外,「滄海」芯片的單幀1080p的編碼耗時僅4毫秒,吞吐性能幾乎不受到編碼參數、視頻類型的影響。
在算法上,「滄海」芯片完整實現高精度運動搜索、全率失真優化、高效自適應量化等所有主流編碼工具,並融合騰訊雲軟件編碼器碼率控制等方面的領先技術,壓縮率高於市面標品35%以上。
此外,騰訊指目前已實現芯片端到端設計、驗證全覆蓋,多款芯片實現規模落地。AI推理芯片「紫霄」採用自研存算架構和自研加速模塊,提供高達3倍的計算加速性能和超過45%的整體成本節省,已在內部業務中投用;高性能網絡芯片「玄靈」採用自研的網絡、存儲、計算加速方案,實現主機CPU的「0」佔用及高達4倍的性能提升,助力打造下一代高性能網絡基礎設施。
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