diff --git a/.github/workflows/unit.yml b/.github/workflows/unit.yml
new file mode 100644
index 00000000..01c9bcc5
--- /dev/null
+++ b/.github/workflows/unit.yml
@@ -0,0 +1,31 @@
+name: unit
+
+on: [ push, pull_request ]
+
+jobs:
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        ubuntu-version: [ "ubuntu-22.04", "ubuntu-24.04", "ubuntu-latest" ]
+        python-version: [ "3.10", "3.11", "3.12" ]
+    runs-on: ${{ matrix.ubuntu-version }}
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+      with:
+        lfs: 'true'
+    - name: Setup python
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt setuptools
+        sudo sysctl kernel.dmesg_restrict=0
+    - name: Test "list"
+      run: ./vaapi-fits list
+    - name: Test "self"
+      run: ./vaapi-fits run --pl NA --device /dev/null -vv --parallel-metrics --call-timeout 10 --ctapr 0 test/self
diff --git a/lib/codecs.py b/lib/codecs.py
index 2191734e..aff50976 100644
--- a/lib/codecs.py
+++ b/lib/codecs.py
@@ -19,6 +19,6 @@ class Codec(str, enum.Enum):
   MJPEG = "mjpeg"
   MPEG2 = "mpeg2"
   VC1   = "vc1"
-
+  VVC   = "vvc"
   def __str__(self):
     return self.value
diff --git a/lib/ffmpeg/decoderbase.py b/lib/ffmpeg/decoderbase.py
index 3db243a0..15b99e0b 100644
--- a/lib/ffmpeg/decoderbase.py
+++ b/lib/ffmpeg/decoderbase.py
@@ -27,6 +27,7 @@ class Decoder(PropertyHandler, BaseFormatMapper):
   decoded   = property(lambda s: s._decoded)
   osdecoded = property(lambda s: filepath2os(s.decoded))
   hwaccel   = property(lambda s: s.props["hwaccel"])
+  strict    = property(lambda s: s.ifprop("strict", "-strict {strict}"))
 
   width       = property(lambda s: s.props["width"])
   height      = property(lambda s: s.props["height"])
@@ -82,7 +83,7 @@ def decode(self):
       self._statsfile = get_media().artifacts.reserve(mtype)
 
       return call(
-        f"{exe2os('ffmpeg')} -v verbose {self.hwinit}"
+        f"{exe2os('ffmpeg')} -v verbose {self.strict} {self.hwinit}"
         f" {self.ffdecoder} -r:v {fps} -i {self.ossource}"
         f" -f rawvideo -pix_fmt {self.format} -s:v {self.width}x{self.height}"
         f" -r:v {fps} {self.refseek} -i {self.osreference}"
@@ -91,7 +92,7 @@ def decode(self):
       )
 
     return call(
-      f"{exe2os('ffmpeg')} -v verbose {self.hwinit}"
+      f"{exe2os('ffmpeg')} -v verbose {self.strict} {self.hwinit}"
       f" {self.ffdecoder} -i {self.ossource} -lavfi '{self.scale_range}'"
       f" -c:v rawvideo -pix_fmt {self.format} -fps_mode passthrough"
       f" -noautoscale -vframes {self.frames} -y {self.ffoutput}"
diff --git a/lib/ffmpeg/encoderbase.py b/lib/ffmpeg/encoderbase.py
index 9c58ecd8..7fdf23dd 100755
--- a/lib/ffmpeg/encoderbase.py
+++ b/lib/ffmpeg/encoderbase.py
@@ -274,7 +274,7 @@ def check_bitrate(self):
       # acceptable bitrate within 10% of bitrate
       assert(bitrate_gap <= 0.10)
 
-    elif "vbr" == self.rcmode and vars(self).get("maxframesize", None) is None:
+    elif "vbr" in self.rcmode and vars(self).get("maxframesize", None) is None:
       # acceptable bitrate within 25% of minrate and 10% of maxrate
       if vars(self).get("maxrate", None) is not None:
         assert(self.minrate * 0.75 <= bitrate_actual <= self.maxrate * 1.10)
diff --git a/lib/gstreamer/encoderbase.py b/lib/gstreamer/encoderbase.py
index 4355a934..01245424 100755
--- a/lib/gstreamer/encoderbase.py
+++ b/lib/gstreamer/encoderbase.py
@@ -204,7 +204,7 @@ def check_bitrate(self):
       # acceptable bitrate within 10% of bitrate
       assert(bitrate_gap <= 0.10)
 
-    elif self.rcmode in ["vbr", "la_vbr"] and vars(self).get("maxframesize", None) is None:
+    elif "vbr" in self.rcmode and vars(self).get("maxframesize", None) is None:
       # acceptable bitrate within 25% of minrate and 10% of maxrate
       assert(self.minrate * 0.75 <= bitrate_actual <= self.maxrate * 1.10)
 
diff --git a/lib/gstreamer/msdk/encoder.py b/lib/gstreamer/msdk/encoder.py
index c701b53d..7d16510f 100644
--- a/lib/gstreamer/msdk/encoder.py
+++ b/lib/gstreamer/msdk/encoder.py
@@ -9,7 +9,7 @@
 import slash
 
 from ....lib.gstreamer.encoderbase import BaseEncoderTest, Encoder as GstEncoder
-from ....lib.gstreamer.util import have_gst_element
+from ....lib.gstreamer.util import have_gst_element, get_elements
 from ....lib.gstreamer.msdk.util import using_compatible_driver, mapprofile, map_best_hw_format, mapformat
 from ....lib.gstreamer.msdk.decoder import Decoder
 from ....lib import platform
@@ -142,6 +142,22 @@ def before(self):
     super().before()
     os.environ["GST_MSDK_DRM_DEVICE"] = get_media().render_device
 
+    self.__rank_before = os.environ.get("GST_PLUGIN_FEATURE_RANK", None)
+    # WA: Fix the gst-discoverer-1.0.exe report Missing plugins problem on Windows OS
+    if platform.info()['os'] == 'wsl':
+      ranks = [] if self.__rank_before is None else self.__rank_before.split(',')
+      ranks += [f"{e}:MAX" for e in get_elements("msdk")]
+      os.environ["GST_PLUGIN_FEATURE_RANK"] = ','.join(ranks)
+
+  def after(self):
+    super().after()
+
+    if None == self.__rank_before:
+      if 'GST_PLUGIN_FEATURE_RANK' in os.environ:
+        del os.environ["GST_PLUGIN_FEATURE_RANK"]
+    else:
+       os.environ["GST_PLUGIN_FEATURE_RANK"] = self.__rank_before
+
   def map_profile(self):
     return mapprofile(self.codec, self.profile)
 
diff --git a/lib/gstreamer/msdk/transcoder.py b/lib/gstreamer/msdk/transcoder.py
index a5f07d29..89e3f287 100644
--- a/lib/gstreamer/msdk/transcoder.py
+++ b/lib/gstreamer/msdk/transcoder.py
@@ -54,10 +54,10 @@ class TranscoderTest(BaseTranscoderTest):
         ),
       ),
       Codec.VP9 : dict(
-        hw = (platform.get_caps("decode", "vp9_8"), have_gst_element(f"msdkvp9dec"), f"matroskademux ! vp9parse ! msdkvp9dec"),
+        hw = (platform.get_caps("decode", "vp9_8"), have_gst_element(f"msdkvp9dec"), "vp9parse ! msdkvp9dec"),
       ),
       Codec.AV1 : dict(
-        hw = (platform.get_caps("decode", "av1_8"), have_gst_element(f"msdkav1dec"), f"matroskademux ! av1parse ! msdkav1dec"),
+        hw = (platform.get_caps("decode", "av1_8"), have_gst_element(f"msdkav1dec"), "av1parse ! msdkav1dec"),
       ),
     },
     encode = {
diff --git a/lib/gstreamer/transcoderbase.py b/lib/gstreamer/transcoderbase.py
index 174b73f7..c2d98dc6 100755
--- a/lib/gstreamer/transcoderbase.py
+++ b/lib/gstreamer/transcoderbase.py
@@ -117,12 +117,21 @@ def validate_caps(self):
 
     self.post_validate()
 
+  def get_demuxer(self, fname):
+    ext = os.path.splitext(fname)[1]
+    return {
+      ".ivf"  : " ! ivfparse",
+      ".webm" : " ! matroskademux",
+      ".ts"   : " ! tsdemux"
+    }.get(ext, "")
+
   def gen_input_opts(self):
     self.ossource = filepath2os(self.source)
+
     opts =  "filesrc location={ossource}"
-    if (os.path.splitext(self.source)[1]) == ".ts":
-      opts += " ! tsdemux"
+    opts += self.get_demuxer(self.source)
     opts += " ! " + self.get_decoder(self.codec, self.mode)
+
     if self.mode in ["hw", "sw"]:
       opts += " ! 'video/x-raw(ANY),format={mformat}'"
 
@@ -182,12 +191,12 @@ def transcode(self):
       get_media()._set_test_details(**{"output.{}".format(n) : output})
       for channel in range(output.get("channels", 1)):
         encoded = self.goutputs[n][channel]
-        osencoded = filepath2os(encoded)
-        self.check_resolution(output, osencoded)
-        self.check_metrics(output, osencoded, refctx = [(n, channel)])
+        self.check_resolution(output, encoded)
+        self.check_metrics(output, encoded, refctx = [(n, channel)])
 
   def check_resolution(self, output, encoded):
-    props = [l.strip() for l in gst_discover(encoded).split('\n')]
+    osencoded = filepath2os(encoded)
+    props = [l.strip() for l in gst_discover(osencoded).split('\n')]
     width = output.get("width", self.width)
     height = output.get("height", self.height)
 
@@ -197,13 +206,14 @@ def check_resolution(self, output, encoded):
   def check_metrics(self, output, encoded, refctx):
     ocodec    = output["codec"]
     odecoder  = self.get_decoder(ocodec, "hw")
+    osencoded = filepath2os(encoded)
 
     vppscale = self.get_vpp_scale(self.width, self.height, "hw")
     statsfile = get_media().artifacts.reserve("psnr")
     osstatsfile = filepath2os(statsfile)
 
     iopts = (
-      f"filesrc location={encoded} ! {odecoder} ! {vppscale}"
+      f"filesrc location={osencoded} {self.get_demuxer(encoded)} ! {odecoder} ! {vppscale}"
       f" ! videorate ! 'video/x-raw(ANY),framerate={self.gstfps}' ! cmp."
       f" {self.gen_input_opts()} ! {vppscale} ! cmp."
       f" avvideocompare method=psnr stats-file={osstatsfile} name=cmp"
diff --git a/lib/gstreamer/va/decoder.py b/lib/gstreamer/va/decoder.py
index 0145f98e..eef45fe2 100644
--- a/lib/gstreamer/va/decoder.py
+++ b/lib/gstreamer/va/decoder.py
@@ -29,13 +29,14 @@ def before(self):
 def decode_test_class(codec, bitdepth, **kwargs):
   # caps lookup translation
   capcodec = codec
-  if codec in [Codec.HEVC, Codec.VP9, Codec.AV1]:
+  if codec in [Codec.HEVC, Codec.VP9, Codec.AV1, Codec.VVC]:
     capcodec = f"{codec}_{bitdepth}"
 
   # gst element codec translation
   gstcodec = {
     Codec.AVC   : "h264",
     Codec.HEVC  : "h265",
+    Codec.VVC   : "h266",
   }.get(codec, codec)
 
   gstparser = {
@@ -90,3 +91,7 @@ def validate_caps(self):
 
 ## MPEG2 ##
 MPEG2DecoderTest    = decode_test_class(codec = Codec.MPEG2, bitdepth = 8)
+
+## VVC ##
+VVC_8DecoderTest    = decode_test_class(codec = Codec.VVC, bitdepth = 8)
+VVC_10DecoderTest   = decode_test_class(codec = Codec.VVC, bitdepth = 10)
diff --git a/lib/gstreamer/va/transcoder.py b/lib/gstreamer/va/transcoder.py
index 01272a86..37224038 100755
--- a/lib/gstreamer/va/transcoder.py
+++ b/lib/gstreamer/va/transcoder.py
@@ -27,9 +27,6 @@ def make_requirements():
         sw = (dict(maxres = (16384, 16384)), have_gst_element("libde265dec"), "h265parse ! libde265dec ! videoconvert"),
         hw = (platform.get_caps("decode", "hevc_8"), have_gst_element(f"va{hw}h265dec"), f"h265parse ! va{hw}h265dec"),
       ),
-      Codec.AV1 : dict(
-        hw = (platform.get_caps("decode", "av1_8"), have_gst_element(f"va{hw}av1dec"), f"matroskademux ! av1parse ! va{hw}av1dec"),
-      ),
       Codec.MPEG2 : dict(
         sw = (dict(maxres = (2048, 2048)), have_gst_element("mpeg2dec"), "mpegvideoparse ! mpeg2dec ! videoconvert"),
         hw = (platform.get_caps("decode", "mpeg2"), have_gst_element(f"va{hw}mpeg2dec"), f"mpegvideoparse ! va{hw}mpeg2dec"),
@@ -39,7 +36,10 @@ def make_requirements():
         hw = (platform.get_caps("decode", "jpeg"), have_gst_element(f"va{hw}jpegdec"), f"jpegparse ! va{hw}jpegdec"),
       ),
       Codec.VP9 : dict(
-        hw = (platform.get_caps("decode", "vp9_8"), have_gst_element(f"va{hw}vp9dec"), f"matroskademux ! vp9parse ! va{hw}vp9dec"),
+        hw = (platform.get_caps("decode", "vp9_8"), have_gst_element(f"va{hw}vp9dec"), f"vp9parse ! va{hw}vp9dec"),
+      ),
+      Codec.AV1 : dict(
+        hw = (platform.get_caps("decode", "av1_8"), have_gst_element(f"va{hw}av1dec"), f"av1parse ! va{hw}av1dec"),
       ),
     },
     encode = {
@@ -53,9 +53,6 @@ def make_requirements():
         hw = (platform.get_caps("encode", "hevc_8"), have_gst_element(f"va{hw}h265enc"), f"va{hw}h265enc ! video/x-h265,profile=main ! h265parse"),
         lp = (platform.get_caps("vdenc", "hevc_8"), have_gst_element(f"va{hw}h265lpenc"), f"va{hw}h265lpenc ! video/x-h265,profile=main ! h265parse"),
       ),
-      Codec.AV1 : dict(
-        lp = (platform.get_caps("vdenc", "av1_8"), have_gst_element(f"va{hw}av1lpenc"), f"va{hw}av1lpenc ! video/x-av1,profile=main ! av1parse ! matroskamux"),
-      ),
       Codec.MPEG2 : dict(
         sw = (dict(maxres = (2048, 2048)), have_gst_element("avenc_mpeg2video"), "avenc_mpeg2video ! mpegvideoparse"),
         hw = (platform.get_caps("encode", "mpeg2"), have_gst_element(f"va{hw}mpeg2enc"), f"va{hw}mpeg2enc ! mpegvideoparse"),
@@ -67,6 +64,9 @@ def make_requirements():
       Codec.VP9 : dict(
         lp = (platform.get_caps("vdenc", "vp9_8"), have_gst_element(f"va{hw}vp9lpenc"), f"va{hw}vp9lpenc ! vp9parse ! matroskamux"),
       ),
+      Codec.AV1 : dict(
+        lp = (platform.get_caps("vdenc", "av1_8"), have_gst_element(f"va{hw}av1lpenc"), f"va{hw}av1lpenc ! video/x-av1,profile=main ! av1parse ! matroskamux"),
+      ),
     },
     vpp = {
       "scale" : dict(
diff --git a/lib/gstreamer/vaapi/transcoder.py b/lib/gstreamer/vaapi/transcoder.py
index 31f37788..3cef7554 100644
--- a/lib/gstreamer/vaapi/transcoder.py
+++ b/lib/gstreamer/vaapi/transcoder.py
@@ -46,7 +46,10 @@ class TranscoderTest(BaseTranscoderTest):
         ),
       ),
       Codec.VP9 : dict(
-        hw = (platform.get_caps("decode", "vp9_8"), have_gst_element(f"vaapivp9dec"), f"matroskademux ! vp9parse !  vaapivp9dec"),
+        hw = (platform.get_caps("decode", "vp9_8"), have_gst_element(f"vaapivp9dec"), f"vp9parse !  vaapivp9dec"),
+      ),
+      Codec.AV1 : dict(
+        hw = (platform.get_caps("decode", "av1_8"), have_gst_element("vaapiav1dec"), "av1parse ! vaapiav1dec"),
       ),
     },
     encode = {
diff --git a/requirements.txt b/requirements.txt
index 6417f5db..4d46b247 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-slash>=1.12.0
+slash >= 1.12.0
 numpy
 scikit-image
 distro
diff --git a/test/ffmpeg-vaapi/decode/10bit/vvc.py b/test/ffmpeg-vaapi/decode/10bit/vvc.py
new file mode 100755
index 00000000..8998083f
--- /dev/null
+++ b/test/ffmpeg-vaapi/decode/10bit/vvc.py
@@ -0,0 +1,29 @@
+###
+### Copyright (C) 2024 Intel Corporation
+###
+### SPDX-License-Identifier: BSD-3-Clause
+###
+
+from .....lib import *
+from .....lib.ffmpeg.vaapi.util import *
+from .....lib.ffmpeg.vaapi.decoder import DecoderTest
+
+spec = load_test_spec("vvc", "decode", "10bit")
+
+@slash.requires(*platform.have_caps("decode", "vvc_10"))
+@slash.requires(*have_ffmpeg_decoder("vvc"))
+class default(DecoderTest):
+  def before(self):
+    vars(self).update(
+      caps        = platform.get_caps("decode", "vvc_10"),
+      ffdecoder   = "vvc",
+      metric      = dict(type = "ssim", miny = 1.0, minu = 1.0, minv = 1.0), # default metric
+      strict      = -2, # Currently, VVC decoder is experimental. Enable it with strict.
+    )
+    super().before()
+
+  @slash.parametrize(("case"), sorted(spec.keys()))
+  def test(self, case):
+    vars(self).update(spec[case].copy())
+    self.case = case
+    self.decode()
diff --git a/test/ffmpeg-vaapi/decode/vvc.py b/test/ffmpeg-vaapi/decode/vvc.py
new file mode 100755
index 00000000..c9a3b5b6
--- /dev/null
+++ b/test/ffmpeg-vaapi/decode/vvc.py
@@ -0,0 +1,29 @@
+###
+### Copyright (C) 2024 Intel Corporation
+###
+### SPDX-License-Identifier: BSD-3-Clause
+###
+
+from ....lib import *
+from ....lib.ffmpeg.vaapi.util import *
+from ....lib.ffmpeg.vaapi.decoder import DecoderTest
+
+spec = load_test_spec("vvc", "decode", "8bit")
+
+@slash.requires(*platform.have_caps("decode", "vvc_8"))
+@slash.requires(*have_ffmpeg_decoder("vvc"))
+class default(DecoderTest):
+  def before(self):
+    vars(self).update(
+      caps        = platform.get_caps("decode", "vvc_8"),
+      ffdecoder   = "vvc",
+      metric      = dict(type = "ssim", miny = 1.0, minu = 1.0, minv = 1.0), # default metric
+      strict      = -2, # Currently, VVC decoder is experimental. Enable it with strict.
+    )
+    super().before()
+
+  @slash.parametrize(("case"), sorted(spec.keys()))
+  def test(self, case):
+    vars(self).update(spec[case].copy())
+    self.case = case
+    self.decode()
\ No newline at end of file
diff --git a/test/gst-va/decode/10bit/vvc.py b/test/gst-va/decode/10bit/vvc.py
new file mode 100755
index 00000000..5d2eff0c
--- /dev/null
+++ b/test/gst-va/decode/10bit/vvc.py
@@ -0,0 +1,25 @@
+###
+### Copyright (C) 2024 Intel Corporation
+###
+### SPDX-License-Identifier: BSD-3-Clause
+###
+
+from .....lib import *
+from .....lib.gstreamer.va.util import *
+from .....lib.gstreamer.va.decoder import VVC_10DecoderTest as DecoderTest
+
+spec = load_test_spec("vvc", "decode", "10bit")
+
+class default(DecoderTest):
+  def before(self):
+    # default metric
+    vars(self).update(
+      metric      = dict(type = "ssim", miny = 1.0, minu = 1.0, minv = 1.0),
+    )
+    super().before()
+
+  @slash.parametrize(("case"), sorted(spec.keys()))
+  def test(self, case):
+    vars(self).update(spec[case].copy())
+    self.case = case
+    self.decode()
diff --git a/test/gst-va/decode/vvc.py b/test/gst-va/decode/vvc.py
new file mode 100755
index 00000000..71743036
--- /dev/null
+++ b/test/gst-va/decode/vvc.py
@@ -0,0 +1,25 @@
+###
+### Copyright (C) 2024 Intel Corporation
+###
+### SPDX-License-Identifier: BSD-3-Clause
+###
+
+from ....lib import *
+from ....lib.gstreamer.va.util import *
+from ....lib.gstreamer.va.decoder import VVC_8DecoderTest as DecoderTest
+
+spec = load_test_spec("vvc", "decode", "8bit")
+
+class default(DecoderTest):
+  def before(self):
+    # default metric
+    vars(self).update(
+      metric      = dict(type = "ssim", miny = 1.0, minu = 1.0, minv = 1.0),
+    )
+    super().before()
+
+  @slash.parametrize(("case"), sorted(spec.keys()))
+  def test(self, case):
+    vars(self).update(spec[case].copy())
+    self.case = case
+    self.decode()
diff --git a/test/gst-vaapi/transcode/av1.py b/test/gst-vaapi/transcode/av1.py
new file mode 100644
index 00000000..acebb2ab
--- /dev/null
+++ b/test/gst-vaapi/transcode/av1.py
@@ -0,0 +1,23 @@
+###
+### Copyright (C) 2024 Intel Corporation
+###
+### SPDX-License-Identifier: BSD-3-Clause
+###
+
+from ....lib import *
+from ....lib.gstreamer.vaapi.util import *
+from ....lib.gstreamer.vaapi.transcoder import TranscoderTest
+from ....lib.codecs import Codec
+
+spec = load_test_spec("av1", "transcode")
+
+class default(TranscoderTest):
+  @slash.parametrize(("case"), sorted_by_resolution(spec))
+  def test(self, case):
+    vars(self).update(spec[case].copy())
+    vars(self).update(
+      case  = case,
+      codec = Codec.AV1,
+    )
+    self.transcode()
+