diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 7baadb4a8..2f0bd681c 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -23,6 +23,7 @@ v14.1.0 (Unreleased)
 Features
 
 - Add hardware decoding by :gh-user:`matthewlai` and :gh-user:`WyattBlue` in (:pr:`1685`).
+- Add ``Stream.disposition`` and ``Disposition`` enum by :gh-user:`WyattBlue` in (:pr:`1720`).
 - Add ``VideoFrame.rotation`` by :gh-user:`lgeiger` in (:pr:`1675`).
 - Support grayf32le and gbrapf32le in numpy convertion by :gh-user:`robinechuca` in (:pr:`1712`).
 
diff --git a/av/stream.pyi b/av/stream.pyi
index 82bb672b2..a2a2e439c 100644
--- a/av/stream.pyi
+++ b/av/stream.pyi
@@ -1,9 +1,31 @@
+from enum import Flag
 from fractions import Fraction
 from typing import Literal
 
 from .codec import Codec, CodecContext
 from .container import Container
 
+class Disposition(Flag):
+    default: int
+    dub: int
+    original: int
+    comment: int
+    lyrics: int
+    karaoke: int
+    forced: int
+    hearing_impaired: int
+    visual_impaired: int
+    clean_effects: int
+    attached_pic: int
+    timed_thumbnails: int
+    non_diegetic: int
+    captions: int
+    descriptions: int
+    metadata: int
+    dependent: int
+    still_image: int
+    multilayer: int
+
 class Stream:
     name: str | None
     container: Container
@@ -20,6 +42,7 @@ class Stream:
     guessed_rate: Fraction | None
     start_time: int | None
     duration: int | None
+    disposition: Disposition
     frames: int
     language: str | None
     type: Literal["video", "audio", "data", "subtitle", "attachment"]
diff --git a/av/stream.pyx b/av/stream.pyx
index 35b85acdf..d0ecf37ad 100644
--- a/av/stream.pyx
+++ b/av/stream.pyx
@@ -1,6 +1,6 @@
 cimport libav as lib
 
-from enum import Enum
+from enum import Flag
 
 from av.error cimport err_check
 from av.packet cimport Packet
@@ -12,6 +12,28 @@ from av.utils cimport (
 )
 
 
+class Disposition(Flag):
+    default = 1 << 0
+    dub = 1 << 1
+    original = 1 << 2
+    comment = 1 << 3
+    lyrics = 1 << 4
+    karaoke = 1 << 5
+    forced = 1 << 6
+    hearing_impaired = 1 << 7
+    visual_impaired = 1 << 8
+    clean_effects = 1 << 9
+    attached_pic = 1 << 10
+    timed_thumbnails = 1 << 11
+    non_diegetic = 1 << 12
+    captions = 1 << 16
+    descriptions = 1 << 17
+    metadata = 1 << 18
+    dependent = 1 << 19
+    still_image = 1 << 20
+    multilayer = 1 << 21
+
+
 cdef object _cinit_bypass_sentinel = object()
 
 cdef Stream wrap_stream(Container container, lib.AVStream *c_stream, CodecContext codec_context):
@@ -96,6 +118,9 @@ cdef class Stream:
         if name == "id":
             self._set_id(value)
             return
+        if name == "disposition":
+            self.ptr.disposition = value
+            return
 
         # Convenience setter for codec context properties.
         if self.codec_context is not None:
@@ -230,6 +255,10 @@ cdef class Stream:
         """
         return self.metadata.get("language")
 
+    @property
+    def disposition(self):
+        return Disposition(self.ptr.disposition)
+
     @property
     def type(self):
         """
diff --git a/include/libav.pxd b/include/libav.pxd
index e2fe323a4..568913208 100644
--- a/include/libav.pxd
+++ b/include/libav.pxd
@@ -24,6 +24,5 @@ include "libavfilter/buffersrc.pxd"
 
 
 cdef extern from "stdio.h" nogil:
-
     cdef int snprintf(char *output, int n, const char *format, ...)
     cdef int vsnprintf(char *output, int n, const char *format, va_list args)
diff --git a/include/libavcodec/avcodec.pxd b/include/libavcodec/avcodec.pxd
index bcb342373..ee832dd04 100644
--- a/include/libavcodec/avcodec.pxd
+++ b/include/libavcodec/avcodec.pxd
@@ -8,6 +8,16 @@ cdef extern from "libavcodec/codec_id.h":
     AVCodecID av_codec_get_id(const AVCodecTag *const *tags, uint32_t tag)
 
 
+cdef extern from "libavcodec/packet.h" nogil:
+    AVPacketSideData* av_packet_side_data_new(
+        AVPacketSideData **sides,
+        int *nb_sides,
+        AVPacketSideDataType type,
+        size_t size,
+        int free_opaque
+    )
+
+
 cdef extern from "libavutil/channel_layout.h":
     ctypedef enum AVChannelOrder:
         AV_CHANNEL_ORDER_UNSPEC
@@ -542,6 +552,10 @@ cdef extern from "libavcodec/avcodec.h" nogil:
     cdef struct AVCodecParameters:
         AVMediaType codec_type
         AVCodecID codec_id
+        AVPacketSideData *coded_side_data
+        int nb_coded_side_data
+        uint8_t *extradata
+        int extradata_size
 
     cdef int avcodec_parameters_copy(
         AVCodecParameters *dst,
diff --git a/include/libavformat/avformat.pxd b/include/libavformat/avformat.pxd
index 5fa25043a..cec89bd38 100644
--- a/include/libavformat/avformat.pxd
+++ b/include/libavformat/avformat.pxd
@@ -30,18 +30,16 @@ cdef extern from "libavformat/avformat.h" nogil:
     cdef struct AVStream:
         int index
         int id
+        int disposition
 
         AVCodecParameters *codecpar
-
         AVRational time_base
 
         int64_t start_time
         int64_t duration
         int64_t nb_frames
         int64_t cur_dts
-
         AVDictionary *metadata
-
         AVRational avg_frame_rate
         AVRational r_frame_rate
         AVRational sample_aspect_ratio
diff --git a/include/libavutil/avutil.pxd b/include/libavutil/avutil.pxd
index 58dd43922..49be65f69 100644
--- a/include/libavutil/avutil.pxd
+++ b/include/libavutil/avutil.pxd
@@ -30,6 +30,7 @@ cdef extern from "libavutil/avutil.h" nogil:
     cdef enum AVPixelFormat:
         AV_PIX_FMT_NONE
         AV_PIX_FMT_YUV420P
+        AV_PIX_FMT_RGBA
         AV_PIX_FMT_RGB24
         PIX_FMT_RGB24
         PIX_FMT_RGBA
diff --git a/tests/test_colorspace.py b/tests/test_colorspace.py
index 7574c147d..c76416c80 100644
--- a/tests/test_colorspace.py
+++ b/tests/test_colorspace.py
@@ -31,6 +31,8 @@ def test_sky_timelapse() -> None:
     )
     stream = container.streams.video[0]
 
+    assert stream.disposition == av.stream.Disposition.default
+
     assert stream.codec_context.color_range == 1
     assert stream.codec_context.color_range == ColorRange.MPEG
     assert stream.codec_context.color_primaries == 1