<s>
High	O
Efficiency	O
Image	O
File	O
Format	O
(	O
HEIF	O
)	O
is	O
a	O
container	O
format	O
for	O
storing	O
individual	O
digital	B-Algorithm
images	I-Algorithm
and	O
image	O
sequences	O
.	O
</s>
<s>
HEIF	O
can	O
store	O
images	O
encoded	O
with	O
multiple	O
coding	O
formats	O
,	O
for	O
example	O
both	O
SDR	B-Device
and	O
HDR	B-Application
images	O
.	O
</s>
<s>
HEVC	B-Algorithm
is	O
an	O
image	O
and	O
video	O
encoding	O
format	O
and	O
the	O
default	O
image	O
codec	O
used	O
with	O
HEIF	O
.	O
</s>
<s>
HEIF	O
files	O
containing	O
HEVC-encoded	O
images	O
are	O
also	O
known	O
as	O
HEIC	O
files	O
.	O
</s>
<s>
HEIF	O
was	O
adopted	O
by	O
Apple	O
in	O
2017	O
with	O
the	O
introduction	O
of	O
iOS	B-Operating_System
11	I-Operating_System
.	O
</s>
<s>
Apple	O
was	O
the	O
first	O
major	O
adopter	O
of	O
the	O
format	O
in	O
2017	O
with	O
the	O
introduction	O
of	O
iOS	B-Operating_System
11	I-Operating_System
using	O
HEIC	O
variant	O
.	O
</s>
<s>
Auxiliary	O
image	O
items	O
Storage	O
of	O
image	O
data	O
,	O
such	O
as	O
an	O
alpha	B-Algorithm
plane	I-Algorithm
or	O
a	O
depth	O
map	O
,	O
which	O
complements	O
another	O
image	O
item	O
.	O
</s>
<s>
It	O
defines	O
a	O
set	O
of	O
additional	O
constraints	O
to	O
simplify	O
format	O
options	O
,	O
specific	O
alpha	B-Algorithm
plane	I-Algorithm
formats	O
,	O
profiles	O
and	O
levels	O
as	O
well	O
as	O
metadata	O
formats	O
and	O
brands	O
,	O
and	O
rules	O
for	O
how	O
to	O
extend	O
the	O
format	O
.	O
</s>
<s>
High	B-Algorithm
Efficiency	I-Algorithm
Video	I-Algorithm
Coding	I-Algorithm
(	O
HEVC	B-Algorithm
,	O
ITU-T	O
H.265	B-Algorithm
)	O
is	O
an	O
encoding	O
format	O
for	O
graphic	O
data	O
,	O
first	O
standardized	O
in	O
2013	O
.	O
</s>
<s>
It	O
is	O
the	O
primarily	O
used	O
and	O
implied	O
default	O
codec	O
for	O
HEIF	O
as	O
specified	O
in	O
the	O
normative	O
Annex	O
B	O
to	O
ISO/IEC	O
23008-12	O
HEVC	B-Algorithm
Image	O
File	O
Format	O
.	O
</s>
<s>
If	O
the	O
content	O
conforms	O
to	O
certain	O
HEVC	B-Algorithm
profiles	O
,	O
more	O
specific	O
brands	O
can	O
be	O
used	O
:	O
HEIX	O
for	O
Main	O
10	O
of	O
HEVC	B-Algorithm
,	O
HEIM	O
for	O
(	O
Multiview	O
)	O
Main	O
profile	O
and	O
HEIS	O
for	O
(	O
Scalable	O
)	O
Main	O
(	O
10	O
)	O
profile	O
of	O
L-HEVC	O
.	O
</s>
<s>
The	O
initial	O
HEIF	O
specification	O
already	O
defined	O
the	O
means	O
of	O
storing	O
HEVC-encoded	O
intra	B-General_Concept
images	I-General_Concept
(	O
i-frames	B-General_Concept
)	O
and	O
HEVC-encoded	O
image	O
sequences	O
in	O
which	O
inter	B-Algorithm
prediction	I-Algorithm
is	O
applied	O
in	O
a	O
constrained	O
manner	O
.	O
</s>
<s>
HEVC	B-Algorithm
image	O
players	O
are	O
required	O
to	O
support	O
rectangular	O
cropping	O
and	O
rotation	O
by	O
one	O
,	O
two	O
and	O
three	O
quarter-turns	O
.	O
</s>
<s>
The	O
HEVC	B-Algorithm
file	O
format	O
also	O
includes	O
the	O
option	O
to	O
store	O
pre-derived	O
images	O
.	O
</s>
<s>
These	O
constraints	O
of	O
inter-picture	O
prediction	O
reduce	O
the	O
decoding	O
latency	O
for	O
accessing	O
any	O
particular	O
image	O
within	O
a	O
HEVC	B-Algorithm
image	O
sequence	O
track	O
.	O
</s>
<s>
The	O
.heic	O
and	O
.heics	O
file	O
name	O
extensions	O
are	O
conventionally	O
used	O
for	O
HEVC-coded	O
HEIF	O
files	O
.	O
</s>
<s>
Apple	O
products	O
,	O
for	O
instance	O
,	O
will	O
only	O
produce	O
files	O
with	O
these	O
extensions	O
,	O
which	O
indicate	O
clearly	O
that	O
the	O
data	O
went	O
through	O
HEVC	B-Algorithm
encoding	O
.	O
</s>
<s>
Advanced	B-Application
Video	I-Application
Coding	I-Application
(	O
AVC	O
,	O
ITU-T	B-Application
H.264	I-Application
)	O
is	O
an	O
older	O
encoding	O
format	O
for	O
video	O
and	O
images	O
,	O
first	O
standardized	O
in	O
2003	O
.	O
</s>
<s>
AV1	B-Application
is	O
a	O
video	O
encoding	O
format	O
that	O
is	O
intended	O
to	O
be	O
royalty	O
free	O
developed	O
by	O
the	O
Alliance	O
for	O
Open	O
Media	O
(	O
AOMedia	O
)	O
.	O
</s>
<s>
AV1	B-Application
Image	O
File	O
Format	O
(	O
AVIF	O
)	O
is	O
an	O
image	O
format	O
based	O
on	O
this	O
codec	O
.	O
</s>
<s>
Although	O
Annex	O
H	O
to	O
ISO/IEC	O
23008-12	O
specifies	O
JPEG	O
(	O
and	O
indirectly	O
Motion	B-Application
JPEG	I-Application
)	O
as	O
a	O
possible	O
format	O
for	O
HEIF	O
coded	O
image	O
data	O
,	O
it	O
is	O
used	O
in	O
HEIF	O
only	O
for	O
thumbnails	O
and	O
other	O
secondary	O
images	O
.	O
</s>
<s>
Annex	O
F	O
of	O
the	O
JPEG	B-Device
XR	I-Device
image	O
coding	O
standard	O
(	O
ISO/IEC	B-Device
29199-2	I-Device
and	O
ITU-T	O
Rec	O
.	O
</s>
<s>
T.832	B-Device
)	O
defines	O
how	O
to	O
store	O
JPEGXR	O
images	O
in	O
HEIF	O
container	O
files	O
.	O
</s>
<s>
Annex	O
A	O
of	O
JPEG	B-Device
XR	I-Device
also	O
defines	O
a	O
different	O
file	O
format	O
for	O
storing	O
JPEGXR	O
images	O
in	O
files	O
that	O
is	O
TIFF-based	O
,	O
and	O
Part2	O
of	O
the	O
JPEG	O
2000	O
suite	O
(	O
ISO/IEC	O
15444-2	O
and	O
ITU-T	O
Rec	O
.	O
</s>
<s>
within	O
WeChat	B-Application
is	O
apparently	O
based	O
upon	O
HEVC	B-Algorithm
,	O
as	O
is	O
SharpP	O
,	O
which	O
was	O
developed	O
by	O
their	O
SNG	O
(	O
Social	O
Network	O
Group	O
)	O
division	O
.	O
</s>
<s>
In	O
March	O
2017	O
,	O
SharpP	O
switcheed	O
to	O
AVS2	B-Algorithm
and	O
was	O
renamed	O
TPG	O
(	O
Tiny	O
Portable	O
Graphics	O
)	O
.	O
</s>
<s>
Nokia	O
provides	O
an	O
open	O
source	O
Java	B-Language
HEIF	O
decoder	O
.	O
</s>
<s>
The	O
open	O
source	O
library	O
"	O
libheif	B-Language
"	O
supports	O
reading	O
and	O
writing	O
HEIF	O
files	O
.	O
</s>
<s>
(	O
The	O
Microsoft	O
HEIC	O
codec	O
is	O
only	O
available	O
for	O
Windows	B-Operating_System
10	I-Operating_System
,	O
version	O
1803	O
and	O
up	O
in	O
the	O
Photos	O
UWP	B-Device
app	O
.	O
)	O
</s>
<s>
Windows	B-Operating_System
10	I-Operating_System
version	O
1803	O
and	O
later	O
(	O
HEIC	O
)	O
,	O
version	O
1903	O
and	O
later	O
(	O
AVIF	O
)	O
:	O
is	O
needed	O
to	O
read	O
and	O
write	O
files	O
that	O
use	O
the	O
HEIF	O
format	O
.	O
</s>
<s>
is	O
needed	O
to	O
play	O
and	O
produce	O
HEVC-encoded	O
video	O
content	O
.	O
</s>
<s>
A	O
small	O
amount	O
of	O
money	O
is	O
charged	O
for	O
the	O
use	O
of	O
the	O
HEVC	B-Algorithm
codec	O
,	O
whereas	O
support	O
for	O
the	O
generic	O
HEIF	O
format	O
and	O
the	O
AVC	O
and	O
AV1	B-Application
extensions	O
are	O
free	O
.	O
</s>
<s>
Windows	B-Application
11	I-Application
:	O
since	O
22H2	O
,	O
Windows	B-Application
11	I-Application
has	O
HEIF	O
Image	O
Extension	O
built-in	O
by	O
default	O
.	O
</s>
<s>
macOS	B-Operating_System
High	I-Operating_System
Sierra	I-Operating_System
and	O
later	O
(	O
HEIC	O
only	O
)	O
Since	O
macOS	B-Device
Mojave	I-Device
,	O
Apple	O
uses	O
HEIF	O
in	O
creating	O
the	O
Dynamic	O
Desktop	O
feature	O
.	O
</s>
<s>
For	O
AVIF	O
,	O
Chrome	O
,	O
Firefox	O
and	O
Opera	O
for	O
desktop	O
and	O
Android	B-Application
support	O
it	O
.	O
</s>
<s>
Safari	O
on	O
iOS	B-Operating_System
16	I-Operating_System
and	O
iPadOS	O
16	O
supports	O
AVIF	O
format	O
.	O
</s>
<s>
(	O
Note	O
that	O
Photoshop	B-Operating_System
for	O
Windows	O
requires	O
the	O
installation	O
of	O
both	O
the	O
HEIF	O
and	O
HEVC	B-Algorithm
CODECs	O
available	O
from	O
Microsoft	O
.	O
)	O
</s>
<s>
Photoshop	B-Operating_System
reads	O
HEIC	O
files	O
,	O
but	O
as	O
of	O
2022	O
does	O
not	O
allow	O
saving	O
to	O
that	O
format	O
.	O
</s>
<s>
GIMP	B-Application
recognizes	O
and	O
treats	O
HEIF	O
files	O
since	O
version	O
2.10.2	O
,	O
released	O
in	O
May	O
2018	O
.	O
</s>
<s>
The	O
Canon	B-Algorithm
EOS-1D	I-Algorithm
X	I-Algorithm
Mark	I-Algorithm
III	I-Algorithm
,	O
Canon	B-Algorithm
EOS	I-Algorithm
R5	I-Algorithm
,	O
and	O
Canon	B-Algorithm
EOS	I-Algorithm
R6	I-Algorithm
cameras	O
use	O
the	O
HEIF	O
format	O
to	O
capture	O
images	O
in	O
an	O
HDR	B-Application
display	I-Application
format	I-Application
that	O
use	O
the	O
PQ	B-Algorithm
tone	O
curve	O
,	O
BT.2100	B-Device
color	O
primaries	O
and	O
10-bit	O
.	O
</s>
<s>
The	O
Sony	B-Algorithm
α1	I-Algorithm
and	O
Sony	B-Device
α7	I-Device
IV	I-Device
offer	O
capturing	O
images	O
in	O
10-bit	O
HEIF	O
format	O
with	O
an	O
HDR	B-Application
format	O
that	O
uses	O
HLG	O
.	O
</s>
<s>
The	O
Fujifilm	B-Algorithm
X-H2S	I-Algorithm
offers	O
a	O
choice	O
of	O
JPEG	O
or	O
10-bit	O
HEIF	O
file	O
formats	O
.	O
</s>
<s>
Some	O
of	O
their	O
latest	O
SoCs	O
also	O
support	O
capturing	O
in	O
HEIC	O
with	O
HDR	B-Application
(	O
e.g.	O
</s>
<s>
The	O
iPhone	B-Application
7	I-Application
and	O
later	O
devices	O
from	O
Apple	O
can	O
capture	O
media	O
in	O
HEIF	O
or	O
HEVC	B-Algorithm
format	O
.	O
</s>
<s>
Android	B-Application
smartphones	O
like	O
,	O
,	O
can	O
capture	O
images	O
in	O
HEIF	O
format	O
.	O
</s>
<s>
HEVC	B-Algorithm
or	O
AVC	O
)	O
its	O
use	O
becomes	O
subject	O
to	O
the	O
licensing	O
of	O
patents	O
on	O
the	O
coding	O
format	O
.	O
</s>
