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