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Royalty-free video codec
Thor
is a
royalty-free
video codec
under development by
Cisco Systems
. The specifications of Thor were available in various
Internet Drafts
.
[1]
On July 22, 2015, Thor was presented to the
IETF
as a candidate for their
NETVC
video standard.
[2]
Thor uses some Cisco elements that are also used by
HEVC
.
[3]
As part of the NETVC work, the Constrained Low-Pass Filter (CLPF) and
motion compensation
techniques used in Thor were tested in conjunction with the
lapped transform
coding techniques from the
Daala
codec.
[4]
On September 1, 2015, Cisco announced that the
Alliance for Open Media
would use elements of Thor to develop a royalty free video format,
AOMedia Video 1
.
[5]
[6]
[7]
According to Steinar Midtskogen, a principal Thor developer and AV1 contributor, Thor is in good shape for real-time CPU encoding (as of NETVC meeting 101, March 19, 2018), in strong contrast to
AV1
at the same time.
[8]
Thor development had stalled for the finalization of AV1, but Midtskogen envisaged further Thor development by merging the Daala entropy coder and adding more tools for screen content.
[9]
References
[
edit
]
External links
[
edit
]