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Add support for files with signature "ftypavif" or "ftypmif1" #237

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Merged
merged 2 commits into from
Aug 4, 2025
Merged

Add support for files with signature "ftypavif" or "ftypmif1" #237

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502555a
Support "ftypmif1" and "ftypavif" (#134)
mv1005 Aug 2, 2025
74f2720
Added AVIF file to tests
mv1005 Aug 2, 2025
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2 changes: 1 addition & 1 deletion Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ endif
EXIF_PY := $(if $(shell which EXIF.py),EXIF.py,./EXIF.py)

# Find images, support multiple case insensitive extensions and file names with spaces
FIND_IMAGES := find tests/resources -regextype posix-egrep -iregex ".*\.(bmp|gif|heic|heif|jpg|jpeg|png|tiff|webp|arw)" -print0 | LC_COLLATE=C sort -fz | xargs -0
FIND_IMAGES := find tests/resources -regextype posix-egrep -iregex ".*\.(bmp|gif|heic|heif|jpg|jpeg|png|tiff|webp|arw|avif)" -print0 | LC_COLLATE=C sort -fz | xargs -0


.PHONY: help
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2 changes: 1 addition & 1 deletion exifread/core/find_exif.py
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Expand Up @@ -84,7 +84,7 @@ def determine_type(fh: BinaryIO) -> Tuple[int, bytes, int]:
if data[0:2] in [b"II", b"MM"]:
# it's a TIFF file
offset, endian = find_tiff_exif(fh)
elif data[4:12] == b"ftypheic":
elif data[4:12] in [b"ftypheic", b"ftypavif", b"ftypmif1"]:
fh.seek(0)
heic = HEICExifFinder(fh)
offset, endian = heic.find_exif()
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2 changes: 1 addition & 1 deletion exifread/core/heic.py
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Expand Up @@ -328,7 +328,7 @@ def _parse_iref(self, box: Box) -> None:

def find_exif(self) -> Tuple[int, bytes]:
ftyp = self.expect_parse("ftyp")
if ftyp.major_brand != b"heic" or ftyp.minor_version != 0:
if ftyp.major_brand not in [b"heic", b"avif", b"mif1"] or ftyp.minor_version != 0:
return 0, b""

meta = self.expect_parse("meta")
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Binary file added tests/resources/avif/mountains.avif
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56 changes: 54 additions & 2 deletions tests/resources/dump.txt
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@@ -1,3 +1,54 @@
Opening: tests/resources/avif/mountains.avif
EXIF ColorSpace (Short): sRGB
EXIF ComponentsConfiguration (Undefined): YCbCr
EXIF Contrast (Short): Normal
EXIF CustomRendered (Short): Normal
EXIF DateTimeDigitized (ASCII): 2024:04:05 10:59:24
EXIF DateTimeOriginal (ASCII): 2024:04:05 10:59:24
EXIF DigitalZoomRatio (Ratio): 1
EXIF ExifImageLength (Long): 1080
EXIF ExifImageWidth (Long): 1920
EXIF ExifVersion (Undefined): 0230
EXIF ExposureBiasValue (Signed Ratio): 0
EXIF ExposureMode (Short): Auto Exposure
EXIF ExposureProgram (Short): Aperture Priority
EXIF ExposureTime (Ratio): 1/1000
EXIF FNumber (Ratio): 5
EXIF FileSource (Undefined): Digital Camera
EXIF Flash (Short): Flash did not fire, auto mode
EXIF FlashPixVersion (Undefined): 0100
EXIF FocalLength (Ratio): 25
EXIF GainControl (Short): Low gain up
EXIF ISOSpeedRatings (Short): 200
EXIF LensModel (ASCII): LEICA DG SUMMILUX 25/F1.4
EXIF LensSpecification (Ratio): [25, 25, 7/5, 7/5]
EXIF LightSource (Short): Unknown
EXIF MakerNote (Undefined): [79, 77, 32, 83, 89, 83, 84, 69, 77, 0, 0, 0, 73, 73, 4, 0, 7, 0, 9, 2, ... ]
EXIF MaxApertureValue (Ratio): 1
EXIF MeteringMode (Short): Pattern
EXIF Saturation (Short): Normal
EXIF SceneCaptureType (Short): Standard
EXIF SensitivityType (Short): Standard Output Sensitivity
EXIF Sharpness (Short): Normal
EXIF UserComment (Undefined):
EXIF WhiteBalance (Short): Auto
GPS GPSVersionID (Byte): [2, 3, 0, 0]
Image Artist (ASCII):
Image Copyright (ASCII):
Image DateTime (ASCII): 2025:08:02 22:48:04
Image ExifOffset (Long): 932
Image GPSInfo (Long): 16626
Image ImageDescription (ASCII):
Image Make (ASCII): OLYMPUS CORPORATION
Image Model (ASCII): E-PL8
Image Orientation (Short): Horizontal (normal)
Image PrintIM (Undefined): [80, 114, 105, 110, 116, 73, 77, 0, 48, 51, 48, 48, 0, 0, 37, 0, 1, 0, 20, 0, ... ]
Image ResolutionUnit (Short): Pixels/Inch
Image Software (ASCII): GIMP 2.10.36
Image XResolution (Ratio): 350
Image YCbCrPositioning (Short): Co-sited
Image YResolution (Ratio): 350

Opening: tests/resources/heic/heic_hdlr_box.jpg
No EXIF information found

Expand Down Expand Up @@ -162,8 +213,9 @@ Image YCbCrPositioning (Short): Centered
Image YResolution (Ratio): 72

Opening: tests/resources/heic/spring_1440x960.heic
File format not recognized.
No EXIF information found
EXIF DateTimeOriginal (ASCII): 2020:12:03 15:04:31
EXIF SubSecTimeOriginal (ASCII): 04
Image ExifOffset (Long): 26

Opening: tests/resources/jpg/Canon_40D.jpg
File has JPEG thumbnail
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