diff --git a/packages/avif/codec/Makefile b/packages/avif/codec/Makefile
index bc0f148..3a7a79c 100644
--- a/packages/avif/codec/Makefile
+++ b/packages/avif/codec/Makefile
@@ -1,9 +1,9 @@
-# libavif and libaom versions are from
-# https://docs.google.com/document/d/1wEEA5rRU7wT54k41u3qyZIZHDCJArIMzLuzsrLAwaK8/edit
-CODEC_URL = https://github.com/AOMediaCodec/libavif/archive/1c39e772c2c0d687691dd4b589a12c323f5f767d.tar.gz
-CODEC_PACKAGE = node_modules/libavif.tar.gz
+# using libavif from https://github.com/AOMediaCodec/libavif
+LIBAVIF_URL = https://github.com/AOMediaCodec/libavif/archive/refs/tags/v1.0.1.tar.gz
+LIBAVIF_PACKAGE = node_modules/libavif.tar.gz
 
-LIBAOM_URL = https://aomedia.googlesource.com/aom/+archive/v3.1.0.tar.gz
+# using libaom from https://aomedia.googlesource.com/aom
+LIBAOM_URL = https://aomedia.googlesource.com/aom/+archive/v3.7.0.tar.gz
 LIBAOM_PACKAGE = node_modules/libaom.tar.gz
 
 export CODEC_DIR = node_modules/libavif
@@ -11,7 +11,12 @@ export BUILD_DIR = node_modules/build
 export LIBAOM_DIR = node_modules/libaom
 
 override CFLAGS += "-Wno-unused-macros"
-export
+
+# We must build libsharpyuv from a specific libwebp commit
+# See libavif/ext/libsharpyuv.cmd for more detail
+LIBWEBP_URL_WITH_SHARPYUV = https://chromium.googlesource.com/webm/libwebp/+archive/e2c85878f6a33f29948b43d3492d9cdaf801aa54.tar.gz
+LIBWEBP_DIR := $(CODEC_DIR)/ext/libwebp
+export LIBSHARPYUV := $(LIBWEBP_DIR)/build/libsharpyuv.a
 
 OUT_ENC_JS = enc/avif_enc.js
 OUT_ENC_MT_JS = enc/avif_enc_mt.js
@@ -27,7 +32,8 @@ HELPER_MAKEFLAGS := -f helper.Makefile
 
 all: $(OUT_ENC_JS) $(OUT_DEC_JS) $(OUT_ENC_MT_JS)
 
-$(OUT_ENC_JS): $(OUT_ENC_CPP) $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_DIR)/CMakeLists.txt
+# ST-Encoding
+$(OUT_ENC_JS): $(OUT_ENC_CPP) $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_DIR)/CMakeLists.txt $(LIBSHARPYUV)
 	$(MAKE) \
 		$(HELPER_MAKEFLAGS) \
 		OUT_JS=$@ \
@@ -38,9 +44,10 @@ $(OUT_ENC_JS): $(OUT_ENC_CPP) $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_DIR)/CMakeLis
 			-DCONFIG_AV1_HIGHBITDEPTH=0 \
 		" \
 		ENVIRONMENT=$(ENVIRONMENT) \
-		LIBAVIF_FLAGS="-DAVIF_CODEC_AOM_DECODE=0"
+		LIBAVIF_FLAGS="-DAVIF_CODEC_AOM_DECODE=0 -DAVIF_LOCAL_LIBSHARPYUV=ON"
 
-$(OUT_ENC_MT_JS): $(OUT_ENC_CPP) $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_DIR)/CMakeLists.txt
+# MT-Encoding
+$(OUT_ENC_MT_JS): $(OUT_ENC_CPP) $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_DIR)/CMakeLists.txt $(LIBSHARPYUV)
 	$(MAKE) \
 		$(HELPER_MAKEFLAGS) \
 		OUT_JS=$@ \
@@ -50,9 +57,10 @@ $(OUT_ENC_MT_JS): $(OUT_ENC_CPP) $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_DIR)/CMake
 			-DCONFIG_AV1_HIGHBITDEPTH=0 \
 		" \
 		ENVIRONMENT=$(ENVIRONMENT) \
-		LIBAVIF_FLAGS="-DAVIF_CODEC_AOM_DECODE=0" \
+		LIBAVIF_FLAGS="-DAVIF_CODEC_AOM_DECODE=0 -DAVIF_LOCAL_LIBSHARPYUV=ON" \
 		OUT_FLAGS="-pthread"
 
+# Decoding
 $(OUT_DEC_JS): $(OUT_DEC_CPP) $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_DIR)/CMakeLists.txt
 	$(MAKE) \
 		$(HELPER_MAKEFLAGS) \
@@ -65,22 +73,56 @@ $(OUT_DEC_JS): $(OUT_DEC_CPP) $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_DIR)/CMakeLis
 		ENVIRONMENT=$(ENVIRONMENT) \
 		LIBAVIF_FLAGS="-DAVIF_CODEC_AOM_ENCODE=0"
 
-$(CODEC_PACKAGE):
-	mkdir -p $(@D)
-	curl -sL $(CODEC_URL) -o $@
+# LIBAOM EXTRACTION SECTION
 
+# Download the libaom tarball
 $(LIBAOM_PACKAGE):
 	mkdir -p $(@D)
 	curl -sL $(LIBAOM_URL) -o $@
 
-$(CODEC_DIR)/CMakeLists.txt: $(CODEC_PACKAGE)
-	mkdir -p $(@D)
-	tar xzm --strip 1 -C $(@D) -f $(CODEC_PACKAGE)
-
+# Extract libaom from the tarball
 $(LIBAOM_DIR)/CMakeLists.txt: $(LIBAOM_PACKAGE)
 	mkdir -p $(@D)
 	tar xzm -C $(@D) -f $(LIBAOM_PACKAGE)
 
+# LIBAVIF EXTRACTION SECTION
+
+# Download the libavif tarball
+$(LIBAVIF_PACKAGE):
+	mkdir -p $(@D)
+	curl -sL $(LIBAVIF_URL) -o $@
+
+# Extract libavif from the tarball
+$(CODEC_DIR)/CMakeLists.txt: $(LIBAVIF_PACKAGE)
+	mkdir -p $(@D)
+	tar xzm --strip 1 -C $(@D) -f $(LIBAVIF_PACKAGE)
+
+# Create libavif/ext/libwebp
+$(LIBWEBP_DIR)/CMakeLists.txt: $(CODEC_DIR)/CMakeLists.txt
+	mkdir -p $(LIBWEBP_DIR)
+	curl -sL $(LIBWEBP_URL_WITH_SHARPYUV) \
+		| tar xzm -C $(LIBWEBP_DIR)
+
+# Make libsharpyuv.a
+$(LIBSHARPYUV): $(LIBWEBP_DIR)/CMakeLists.txt
+	mkdir -p $(@D)
+	emcmake cmake \
+		-DWEBP_BUILD_ANIM_UTILS=OFF \
+		-DWEBP_BUILD_CWEBP=OFF \
+		-DWEBP_BUILD_DWEBP=OFF \
+		-DWEBP_BUILD_GIF2WEBP=OFF \
+		-DWEBP_BUILD_IMG2WEBP=OFF \
+		-DWEBP_BUILD_VWEBP=OFF \
+		-DWEBP_BUILD_WEBPINFO=OFF \
+		-DWEBP_BUILD_LIBWEBPMUX=OFF \
+		-DWEBP_BUILD_WEBPMUX=OFF \
+		-DWEBP_BUILD_EXTRAS=OFF \
+		-DBUILD_SHARED_LIBS=OFF \
+		-DCMAKE_BUILD_TYPE=Release \
+		-S $(LIBWEBP_DIR) \
+		-B $(@D)
+	$(MAKE) -C $(@D) sharpyuv
+
 clean:
 	$(MAKE) $(HELPER_MAKEFLAGS) OUT_JS=$(OUT_ENC_JS) clean
 	$(MAKE) $(HELPER_MAKEFLAGS) OUT_JS=$(OUT_ENC_MT_JS) clean
diff --git a/packages/avif/codec/enc/avif_enc.cpp b/packages/avif/codec/enc/avif_enc.cpp
index e7f63b4..fa88a60 100644
--- a/packages/avif/codec/enc/avif_enc.cpp
+++ b/packages/avif/codec/enc/avif_enc.cpp
@@ -3,15 +3,27 @@
 #include <emscripten/val.h>
 #include "avif/avif.h"
 
+#include <memory>
+#include <string>
+
+#define RETURN_NULL_IF(expression) \
+  do {                             \
+    if (expression)                \
+      return val::null();          \
+  } while (false)
+
 using namespace emscripten;
 
+using AvifImagePtr = std::unique_ptr<avifImage, decltype(&avifImageDestroy)>;
+using AvifEncoderPtr = std::unique_ptr<avifEncoder, decltype(&avifEncoderDestroy)>;
+
 struct AvifOptions {
-  // [0 - 63]
-  // 0 = lossless
-  // 63 = worst quality
-  int cqLevel;
-  // As above, but -1 means 'use cqLevel'
-  int cqAlphaLevel;
+  // [0 - 100]
+  // 0 = worst quality
+  // 100 = lossless
+  int quality;
+  // As above, but -1 means 'use quality'
+  int qualityAlpha;
   // [0 - 6]
   // Creates 2^n tiles in that dimension
   int tileRowsLog2;
@@ -35,12 +47,15 @@ struct AvifOptions {
   int tune;
   // 0-50
   int denoiseLevel;
+  // toggles AVIF_CHROMA_DOWNSAMPLING_SHARP_YUV
+  bool enableSharpYUV;
 };
 
 thread_local const val Uint8Array = val::global("Uint8Array");
 
 val encode(std::string buffer, int width, int height, AvifOptions options) {
-  avifRWData output = AVIF_DATA_EMPTY;
+  avifResult status;  // To check the return status for avif API's
+
   int depth = 8;
   avifPixelFormat format;
   switch (options.subsample) {
@@ -58,11 +73,13 @@ val encode(std::string buffer, int width, int height, AvifOptions options) {
       break;
   }
 
-  bool lossless = options.cqLevel == AVIF_QUANTIZER_LOSSLESS &&
-                  options.cqAlphaLevel <= AVIF_QUANTIZER_LOSSLESS &&
+  bool lossless = options.quality == AVIF_QUALITY_LOSSLESS &&
+                  (options.qualityAlpha == -1 || options.qualityAlpha == AVIF_QUALITY_LOSSLESS) &&
                   format == AVIF_PIXEL_FORMAT_YUV444;
 
-  avifImage* image = avifImageCreate(width, height, depth, format);
+  // Smart pointer for the input image in YUV format
+  AvifImagePtr image(avifImageCreate(width, height, depth, format), avifImageDestroy);
+  RETURN_NULL_IF(image == nullptr);
 
   if (lossless) {
     image->matrixCoefficients = AVIF_MATRIX_COEFFICIENTS_IDENTITY;
@@ -73,43 +90,49 @@ val encode(std::string buffer, int width, int height, AvifOptions options) {
   uint8_t* rgba = reinterpret_cast<uint8_t*>(const_cast<char*>(buffer.data()));
 
   avifRGBImage srcRGB;
-  avifRGBImageSetDefaults(&srcRGB, image);
+  avifRGBImageSetDefaults(&srcRGB, image.get());
   srcRGB.pixels = rgba;
   srcRGB.rowBytes = width * 4;
-  avifImageRGBToYUV(image, &srcRGB);
+  if (options.enableSharpYUV) {
+    srcRGB.chromaDownsampling = AVIF_CHROMA_DOWNSAMPLING_SHARP_YUV;
+  }
+  status = avifImageRGBToYUV(image.get(), &srcRGB);
+  RETURN_NULL_IF(status != AVIF_RESULT_OK);
 
-  avifEncoder* encoder = avifEncoderCreate();
+  // Create a smart pointer for the encoder
+  AvifEncoderPtr encoder(avifEncoderCreate(), avifEncoderDestroy);
+  RETURN_NULL_IF(encoder == nullptr);
 
   if (lossless) {
-    encoder->minQuantizer = AVIF_QUANTIZER_LOSSLESS;
-    encoder->maxQuantizer = AVIF_QUANTIZER_LOSSLESS;
-    encoder->minQuantizerAlpha = AVIF_QUANTIZER_LOSSLESS;
-    encoder->maxQuantizerAlpha = AVIF_QUANTIZER_LOSSLESS;
+    encoder->quality = AVIF_QUALITY_LOSSLESS;
+    encoder->qualityAlpha = AVIF_QUALITY_LOSSLESS;
   } else {
-    encoder->minQuantizer = AVIF_QUANTIZER_BEST_QUALITY;
-    encoder->maxQuantizer = AVIF_QUANTIZER_WORST_QUALITY;
-    encoder->minQuantizerAlpha = AVIF_QUANTIZER_BEST_QUALITY;
-    encoder->maxQuantizerAlpha = AVIF_QUANTIZER_WORST_QUALITY;
-    avifEncoderSetCodecSpecificOption(encoder, "end-usage", "q");
-    avifEncoderSetCodecSpecificOption(encoder, "cq-level", std::to_string(options.cqLevel).c_str());
-    avifEncoderSetCodecSpecificOption(encoder, "sharpness",
-                                      std::to_string(options.sharpness).c_str());
-
-    if (options.cqAlphaLevel != -1) {
-      avifEncoderSetCodecSpecificOption(encoder, "alpha:cq-level",
-                                        std::to_string(options.cqAlphaLevel).c_str());
+    status = avifEncoderSetCodecSpecificOption(encoder.get(), "sharpness",
+                                               std::to_string(options.sharpness).c_str());
+    RETURN_NULL_IF(status != AVIF_RESULT_OK);
+
+    // Set base quality
+    encoder->quality = options.quality;
+    // Conditionally set alpha quality
+    if (options.qualityAlpha == -1) {
+      encoder->qualityAlpha = options.quality;
+    } else {
+      encoder->qualityAlpha = options.qualityAlpha;
     }
 
-    if (options.tune == 2 || (options.tune == 0 && options.cqLevel <= 32)) {
-      avifEncoderSetCodecSpecificOption(encoder, "tune", "ssim");
+    if (options.tune == 2 || (options.tune == 0 && options.quality >= 50)) {
+      status = avifEncoderSetCodecSpecificOption(encoder.get(), "tune", "ssim");
+      RETURN_NULL_IF(status != AVIF_RESULT_OK);
     }
 
     if (options.chromaDeltaQ) {
-      avifEncoderSetCodecSpecificOption(encoder, "enable-chroma-deltaq", "1");
+      status = avifEncoderSetCodecSpecificOption(encoder.get(), "color:enable-chroma-deltaq", "1");
+      RETURN_NULL_IF(status != AVIF_RESULT_OK);
     }
 
-    avifEncoderSetCodecSpecificOption(encoder, "color:denoise-noise-level",
-                                      std::to_string(options.denoiseLevel).c_str());
+    status = avifEncoderSetCodecSpecificOption(encoder.get(), "color:denoise-noise-level",
+                                               std::to_string(options.denoiseLevel).c_str());
+    RETURN_NULL_IF(status != AVIF_RESULT_OK);
   }
 
   encoder->maxThreads = emscripten_num_logical_cores();
@@ -117,22 +140,21 @@ val encode(std::string buffer, int width, int height, AvifOptions options) {
   encoder->tileColsLog2 = options.tileColsLog2;
   encoder->speed = options.speed;
 
-  avifResult encodeResult = avifEncoderWrite(encoder, image, &output);
+  avifRWData output = AVIF_DATA_EMPTY;
+  avifResult encodeResult = avifEncoderWrite(encoder.get(), image.get(), &output);
   auto js_result = val::null();
   if (encodeResult == AVIF_RESULT_OK) {
     js_result = Uint8Array.new_(typed_memory_view(output.size, output.data));
   }
 
-  avifImageDestroy(image);
-  avifEncoderDestroy(encoder);
   avifRWDataFree(&output);
   return js_result;
 }
 
 EMSCRIPTEN_BINDINGS(my_module) {
   value_object<AvifOptions>("AvifOptions")
-      .field("cqLevel", &AvifOptions::cqLevel)
-      .field("cqAlphaLevel", &AvifOptions::cqAlphaLevel)
+      .field("quality", &AvifOptions::quality)
+      .field("qualityAlpha", &AvifOptions::qualityAlpha)
       .field("tileRowsLog2", &AvifOptions::tileRowsLog2)
       .field("tileColsLog2", &AvifOptions::tileColsLog2)
       .field("speed", &AvifOptions::speed)
@@ -140,7 +162,8 @@ EMSCRIPTEN_BINDINGS(my_module) {
       .field("sharpness", &AvifOptions::sharpness)
       .field("tune", &AvifOptions::tune)
       .field("denoiseLevel", &AvifOptions::denoiseLevel)
-      .field("subsample", &AvifOptions::subsample);
+      .field("subsample", &AvifOptions::subsample)
+      .field("enableSharpYUV", &AvifOptions::enableSharpYUV);
 
   function("encode", &encode);
 }
diff --git a/packages/avif/codec/helper.Makefile b/packages/avif/codec/helper.Makefile
index ad305ad..8f946e2 100644
--- a/packages/avif/codec/helper.Makefile
+++ b/packages/avif/codec/helper.Makefile
@@ -10,8 +10,11 @@
 #   $(LIBAVIF_FLAGS)
 #   $(ENVIRONMENT)
 
+# $(OUT_JS) is something like "enc/avif_enc.js" or "enc/avif_enc_mt.js"
+# so $(OUT_BUILD_DIR) will be "node_modules/build/enc/avif_enc[_mt]"
 OUT_BUILD_DIR := $(BUILD_DIR)/$(basename $(OUT_JS))
 
+# We're making libavif and libaom for every node_modules/[enc|dec]/
 CODEC_BUILD_DIR := $(OUT_BUILD_DIR)/libavif
 CODEC_OUT := $(CODEC_BUILD_DIR)/libavif.a
 
@@ -25,6 +28,13 @@ OUT_WORKER=$(OUT_JS:.js=.worker.js)
 
 all: $(OUT_JS)
 
+# Only add libsharpyuv as a dependency for encoders.
+# Yes, that if statement is true for encoders.
+ifneq (,$(findstring enc/, $(OUT_JS)))
+$(OUT_JS): $(LIBSHARPYUV)
+$(CODEC_OUT): $(LIBSHARPYUV)
+endif
+
 $(OUT_JS): $(OUT_CPP) $(LIBAOM_OUT) $(CODEC_OUT)
 	$(CXX) \
 		-I $(CODEC_DIR)/include \
@@ -32,6 +42,7 @@ $(OUT_JS): $(OUT_CPP) $(LIBAOM_OUT) $(CODEC_OUT)
 		$(LDFLAGS) \
 		$(OUT_FLAGS) \
 		--bind \
+		-s ERROR_ON_UNDEFINED_SYMBOLS=0 \
 		-s ENVIRONMENT=$(ENVIRONMENT) \
 		-s EXPORT_ES6=1 \
 		-s DYNAMIC_EXECUTION=0 \
@@ -41,6 +52,7 @@ $(OUT_JS): $(OUT_CPP) $(LIBAOM_OUT) $(CODEC_OUT)
 
 $(CODEC_OUT): $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_OUT)
 	emcmake cmake \
+		-DCMAKE_LIBRARY_PATH=$(LIBSHARPYUV_BUILD_DIR) \
 		-DCMAKE_BUILD_TYPE=Release \
 		-DBUILD_SHARED_LIBS=0 \
 		-DAVIF_CODEC_AOM=1 \
@@ -72,4 +84,4 @@ $(LIBAOM_OUT): $(LIBAOM_DIR)/CMakeLists.txt
 clean:
 	$(RM) $(OUT_JS) $(OUT_WASM) $(OUT_WORKER)
 	$(MAKE) -C $(CODEC_BUILD_DIR) clean
-	$(MAKE) -C $(LIBAOM_BUILD_DIR) clean
+	$(MAKE) -C $(LIBAOM_BUILD_DIR) clean
\ No newline at end of file
diff --git a/packages/avif/meta.ts b/packages/avif/meta.ts
index da63cac..487d169 100644
--- a/packages/avif/meta.ts
+++ b/packages/avif/meta.ts
@@ -18,8 +18,8 @@ export const label = 'AVIF';
 export const mimeType = 'image/avif';
 export const extension = 'avif';
 export const defaultOptions: EncodeOptions = {
-  cqLevel: 33,
-  cqAlphaLevel: -1,
+  quality: 50,
+  qualityAlpha: -1,
   denoiseLevel: 0,
   tileColsLog2: 0,
   tileRowsLog2: 0,
diff --git a/tools/cpp.dockerfile b/tools/cpp.dockerfile
index ca07076..0208322 100644
--- a/tools/cpp.dockerfile
+++ b/tools/cpp.dockerfile
@@ -1,4 +1,4 @@
-FROM emscripten/emsdk:2.0.23
+FROM emscripten/emsdk:2.0.34
 RUN apt-get update && apt-get install -qqy autoconf libtool pkg-config
 ENV CFLAGS "-O3 -flto"
 ENV CXXFLAGS "${CFLAGS} -std=c++17"