383 citations · 1.4k across the 49 of their papers we have counts for
9 papers · 1 filter
Perceptually-Driven Video Coding with the Daala Video Codec
Yushin Cho, Thomas J. Daede, Nathan E. Egge +5
The Daala project is a royalty-free video codec that attempts to compete with the best patent-encumbered codecs. Part of our strategy is to replace core tools of traditional video…
Daala: Building A Next-Generation Video Codec From Unconventional Technology
Jean-Marc Valin, Timothy B. Terriberry, Nathan E. Egge +4
Daala is a new royalty-free video codec that attempts to compete with state-of-the-art royalty-bearing codecs. To do so, it must achieve good compression while avoiding all of thei…
Daala: A Perceptually-Driven Still Picture Codec
Jean-Marc Valin, Nathan E. Egge, Thomas Daede +2
Daala is a new royalty-free video codec based on perceptually-driven coding techniques. We explore using its keyframe format for still picture coding and show how it has improved o…
Predicting Chroma from Luma with Frequency Domain Intra Prediction
Nathan E. Egge, Jean-Marc Valin
This paper describes a technique for performing intra prediction of the chroma planes based on the reconstructed luma plane in the frequency domain. This prediction exploits the fa…
Daala: A Perceptually-Driven Next Generation Video Codec
Thomas J. Daede, Nathan E. Egge, Jean-Marc Valin +2
The Daala project is a royalty-free video codec that attempts to compete with the best patent-encumbered codecs. Part of our strategy is to replace core tools of traditional video…
A Full-Bandwidth Audio Codec With Low Complexity And Very Low Delay
Jean-Marc Valin, Timothy B. Terriberry, Gregory Maxwell
We propose an audio codec that addresses the low-delay requirements of some applications such as network music performance. The codec is based on the modified discrete cosine trans…
Perceptual Vector Quantization For Video Coding
Jean-Marc Valin, Timothy B. Terriberry
This paper applies energy conservation principles to the Daala video codec using gain-shape vector quantization to encode a vector of AC coefficients as a length (gain) and directi…
High-Quality, Low-Delay Music Coding in the Opus Codec
Jean-Marc Valin, Gregory Maxwell, Timothy B. Terriberry +1
The IETF recently standardized the Opus codec as RFC6716. Opus targets a wide range of real-time Internet applications by combining a linear prediction coder with a transform coder…
The AV1 Constrained Directional Enhancement Filter (CDEF)
Steinar Midtskogen, Jean-Marc Valin
This paper presents the constrained directional enhancement filter designed for the AV1 royalty-free video codec. The in-loop filter is based on a non-linear low-pass filter and is…