diff --git a/src/PIL/AvifImagePlugin.py b/src/PIL/AvifImagePlugin.py
index c92e2534ef9..ea3fd8b0b71 100644
--- a/src/PIL/AvifImagePlugin.py
+++ b/src/PIL/AvifImagePlugin.py
@@ -4,7 +4,7 @@
 from io import BytesIO
 from typing import IO
 
-from . import ExifTags, Image, ImageFile
+from . import Image, ImageFile
 
 try:
     from . import _avif
@@ -172,19 +172,6 @@ def _save(
     if isinstance(exif, Image.Exif):
         exif = exif.tobytes()
 
-    exif_orientation = 0
-    if exif:
-        exif_data = Image.Exif()
-        try:
-            exif_data.load(exif)
-        except SyntaxError:
-            pass
-        else:
-            orientation_tag = next(
-                k for k, v in ExifTags.TAGS.items() if v == "Orientation"
-            )
-            exif_orientation = exif_data.get(orientation_tag) or 0
-
     xmp = info.get("xmp", im.info.get("xmp") or im.info.get("XML:com.adobe.xmp"))
 
     if isinstance(xmp, str):
@@ -228,7 +215,6 @@ def _save(
         autotiling,
         icc_profile or b"",
         exif or b"",
-        exif_orientation,
         xmp or b"",
         advanced,
     )
diff --git a/src/_avif.c b/src/_avif.c
index 1d4bb74010e..55ef3912158 100644
--- a/src/_avif.c
+++ b/src/_avif.c
@@ -76,118 +76,6 @@ exc_type_for_avif_result(avifResult result) {
     }
 }
 
-static void
-exif_orientation_to_irot_imir(avifImage *image, int orientation) {
-    const avifTransformFlags otherFlags =
-        image->transformFlags & ~(AVIF_TRANSFORM_IROT | AVIF_TRANSFORM_IMIR);
-
-    //
-    // Mapping from Exif orientation as defined in JEITA CP-3451C section 4.6.4.A
-    // Orientation to irot and imir boxes as defined in HEIF ISO/IEC 28002-12:2021
-    // sections 6.5.10 and 6.5.12.
-    switch (orientation) {
-        case 1:  // The 0th row is at the visual top of the image, and the 0th column is
-                 // the visual left-hand side.
-            image->transformFlags = otherFlags;
-            image->irot.angle = 0;  // ignored
-#if AVIF_VERSION_MAJOR >= 1
-            image->imir.axis = 0;  // ignored
-#else
-            image->imir.mode = 0;  // ignored
-#endif
-            return;
-        case 2:  // The 0th row is at the visual top of the image, and the 0th column is
-                 // the visual right-hand side.
-            image->transformFlags = otherFlags | AVIF_TRANSFORM_IMIR;
-            image->irot.angle = 0;  // ignored
-#if AVIF_VERSION_MAJOR >= 1
-            image->imir.axis = 1;
-#else
-            image->imir.mode = 1;
-#endif
-            return;
-        case 3:  // The 0th row is at the visual bottom of the image, and the 0th column
-                 // is the visual right-hand side.
-            image->transformFlags = otherFlags | AVIF_TRANSFORM_IROT;
-            image->irot.angle = 2;
-#if AVIF_VERSION_MAJOR >= 1
-            image->imir.axis = 0;  // ignored
-#else
-            image->imir.mode = 0;  // ignored
-#endif
-            return;
-        case 4:  // The 0th row is at the visual bottom of the image, and the 0th column
-                 // is the visual left-hand side.
-            image->transformFlags = otherFlags | AVIF_TRANSFORM_IMIR;
-            image->irot.angle = 0;  // ignored
-#if AVIF_VERSION_MAJOR >= 1
-            image->imir.axis = 0;
-#else
-            image->imir.mode = 0;
-#endif
-            return;
-        case 5:  // The 0th row is the visual left-hand side of the image, and the 0th
-                 // column is the visual top.
-            image->transformFlags =
-                otherFlags | AVIF_TRANSFORM_IROT | AVIF_TRANSFORM_IMIR;
-            image->irot.angle = 1;  // applied before imir according to MIAF spec
-                                    // ISO/IEC 28002-12:2021 - section 7.3.6.7
-#if AVIF_VERSION_MAJOR >= 1
-            image->imir.axis = 0;
-#else
-            image->imir.mode = 0;
-#endif
-            return;
-        case 6:  // The 0th row is the visual right-hand side of the image, and the 0th
-                 // column is the visual top.
-            image->transformFlags = otherFlags | AVIF_TRANSFORM_IROT;
-            image->irot.angle = 3;
-#if AVIF_VERSION_MAJOR >= 1
-            image->imir.axis = 0;  // ignored
-#else
-            image->imir.mode = 0;  // ignored
-#endif
-            return;
-        case 7:  // The 0th row is the visual right-hand side of the image, and the 0th
-                 // column is the visual bottom.
-            image->transformFlags =
-                otherFlags | AVIF_TRANSFORM_IROT | AVIF_TRANSFORM_IMIR;
-            image->irot.angle = 3;  // applied before imir according to MIAF spec
-                                    // ISO/IEC 28002-12:2021 - section 7.3.6.7
-#if AVIF_VERSION_MAJOR >= 1
-            image->imir.axis = 0;
-#else
-            image->imir.mode = 0;
-#endif
-            return;
-        case 8:  // The 0th row is the visual left-hand side of the image, and the 0th
-                 // column is the visual bottom.
-            image->transformFlags = otherFlags | AVIF_TRANSFORM_IROT;
-            image->irot.angle = 1;
-#if AVIF_VERSION_MAJOR >= 1
-            image->imir.axis = 0;  // ignored
-#else
-            image->imir.mode = 0;  // ignored
-#endif
-            return;
-        default:  // reserved
-            break;
-    }
-
-    // The orientation tag is not mandatory (only recommended) according to JEITA
-    // CP-3451C section 4.6.8.A. The default value is 1 if the orientation tag is
-    // missing, meaning:
-    //   The 0th row is at the visual top of the image, and the 0th column is the visual
-    //   left-hand side.
-    image->transformFlags = otherFlags;
-    image->irot.angle = 0;  // ignored
-#if AVIF_VERSION_MAJOR >= 1
-    image->imir.axis = 0;  // ignored
-#else
-    image->imir.mode = 0;  // ignored
-#endif
-}
-
 static int
 _codec_available(const char *name, uint32_t flags) {
     avifCodecChoice codec = avifCodecChoiceFromName(name);
@@ -270,7 +158,6 @@ AvifEncoderNew(PyObject *self_, PyObject *args) {
     int qmax;
     int quality;
     int speed;
-    int exif_orientation;
     int max_threads;
     PyObject *icc_bytes;
     PyObject *exif_bytes;
@@ -287,7 +174,7 @@ AvifEncoderNew(PyObject *self_, PyObject *args) {
 
     if (!PyArg_ParseTuple(
             args,
-            "IIsiiiiissiiOOSSiSO",
+            "IIsiiiiissiiOOSSSO",
             &width,
             &height,
             &subsampling,
@@ -304,7 +191,6 @@ AvifEncoderNew(PyObject *self_, PyObject *args) {
             &autotiling,
             &icc_bytes,
             &exif_bytes,
-            &exif_orientation,
             &xmp_bytes,
             &advanced
         )) {
@@ -500,7 +386,6 @@ AvifEncoderNew(PyObject *self_, PyObject *args) {
                 return NULL;
             }
         }
-        exif_orientation_to_irot_imir(image, exif_orientation);
 
         self->image = image;
         self->frame_index = -1;