diff --git a/sys/src/avutil/channel_layout.rs b/sys/src/avutil/channel_layout.rs
index acacc9f..217966d 100644
--- a/sys/src/avutil/channel_layout.rs
+++ b/sys/src/avutil/channel_layout.rs
@@ -57,7 +57,7 @@ pub const AV_CH_LAYOUT_7POINT1_WIDE_BACK: c_ulonglong = AV_CH_LAYOUT_5POINT1_BAC
 pub const AV_CH_LAYOUT_OCTAGONAL:         c_ulonglong = AV_CH_LAYOUT_5POINT0 | AV_CH_BACK_LEFT | AV_CH_BACK_CENTER | AV_CH_BACK_RIGHT;
 pub const AV_CH_LAYOUT_STEREO_DOWNMIX:    c_ulonglong = AV_CH_STEREO_LEFT | AV_CH_STEREO_RIGHT;
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVMatrixEncoding {
 	AV_MATRIX_ENCODING_NONE,
diff --git a/sys/src/avutil/crc.rs b/sys/src/avutil/crc.rs
index 17df8fd..0875bc9 100644
--- a/sys/src/avutil/crc.rs
+++ b/sys/src/avutil/crc.rs
@@ -2,7 +2,7 @@ use libc::{c_int, uint8_t, uint32_t, size_t};
 
 pub type AVCRC = uint32_t;
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVCRCId {
 	AV_CRC_8_ATM,
diff --git a/sys/src/avutil/downmix_info.rs b/sys/src/avutil/downmix_info.rs
index a084c29..5d9f919 100644
--- a/sys/src/avutil/downmix_info.rs
+++ b/sys/src/avutil/downmix_info.rs
@@ -1,7 +1,7 @@
 use libc::{c_double};
 use super::frame::AVFrame;
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVDownmixType {
 	AV_DOWNMIX_TYPE_UNKNOWN,
diff --git a/sys/src/avutil/frame.rs b/sys/src/avutil/frame.rs
index 14de3fc..0a78edc 100644
--- a/sys/src/avutil/frame.rs
+++ b/sys/src/avutil/frame.rs
@@ -7,7 +7,7 @@ use super::util::AVPictureType;
 
 pub const AV_NUM_DATA_POINTERS: usize = 8;
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVFrameSideDataType {
 	AV_FRAME_DATA_PANSCAN,
diff --git a/sys/src/avutil/hmac.rs b/sys/src/avutil/hmac.rs
index 5dbb4f4..bebeb77 100644
--- a/sys/src/avutil/hmac.rs
+++ b/sys/src/avutil/hmac.rs
@@ -1,6 +1,6 @@
 use libc::{c_void, c_int, c_uint, uint8_t};
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVHMACType {
 	AV_HMAC_MD5,
diff --git a/sys/src/avutil/log.rs b/sys/src/avutil/log.rs
index ad9699b..167211b 100644
--- a/sys/src/avutil/log.rs
+++ b/sys/src/avutil/log.rs
@@ -1,7 +1,7 @@
 use libc::{c_void, c_char, c_int};
 use super::opt::{AVOption, AVOptionRanges};
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVClassCategory {
 	AV_CLASS_CATEGORY_NA = 0,
diff --git a/sys/src/avutil/mathematics.rs b/sys/src/avutil/mathematics.rs
index 36c79f6..38de639 100644
--- a/sys/src/avutil/mathematics.rs
+++ b/sys/src/avutil/mathematics.rs
@@ -1,6 +1,7 @@
 use libc::{c_int, int64_t, uint64_t};
 use super::rational::AVRational;
 
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVRounding {
 	AV_ROUND_ZERO        = 0,
diff --git a/sys/src/avutil/opt.rs b/sys/src/avutil/opt.rs
index e9c72b8..44a4596 100644
--- a/sys/src/avutil/opt.rs
+++ b/sys/src/avutil/opt.rs
@@ -21,7 +21,7 @@ pub const AV_OPT_MULTI_COMPONENT_RANGE:     c_int = 0x1000;
 pub const AV_OPT_SERIALIZE_SKIP_DEFAULTS:   c_int = 0x00000001;
 pub const AV_OPT_SERIALIZE_OPT_FLAGS_EXACT: c_int = 0x00000002;
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVOptionType {
 	AV_OPT_TYPE_FLAGS,
diff --git a/sys/src/avutil/pixfmt.rs b/sys/src/avutil/pixfmt.rs
index e6715ae..2c87621 100644
--- a/sys/src/avutil/pixfmt.rs
+++ b/sys/src/avutil/pixfmt.rs
@@ -3,7 +3,7 @@ use libc::{c_int};
 pub const AVPALETTE_SIZE:  c_int = 1024;
 pub const AVPALETTE_COUNT: c_int = 256;
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVPixelFormat {
     AV_PIX_FMT_NONE = -1,
@@ -388,7 +388,7 @@ pub const PIX_FMT_GBRP12: AVPixelFormat = default::AV_PIX_FMT_GBRP12;
 pub const PIX_FMT_GBRP14: AVPixelFormat = default::AV_PIX_FMT_GBRP14;
 pub const PIX_FMT_GBRP16: AVPixelFormat = default::AV_PIX_FMT_GBRP16;
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVColorPrimaries {
 	AVCOL_PRI_RESERVED0   = 0,
@@ -405,7 +405,7 @@ pub enum AVColorPrimaries {
 	AVCOL_PRI_NB,
 }
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVColorTransferCharacteristic {
 	AVCOL_TRC_RESERVED0    = 0,
@@ -427,7 +427,7 @@ pub enum AVColorTransferCharacteristic {
 	AVCOL_TRC_NB,
 }
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVColorSpace {
 	AVCOL_SPC_RGB         = 0,
@@ -446,7 +446,7 @@ pub enum AVColorSpace {
 
 pub const AVCOL_SPC_YCGCO: AVColorSpace = AVColorSpace::AVCOL_SPC_YCOCG;
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVColorRange {
 	AVCOL_RANGE_UNSPECIFIED = 0,
@@ -455,7 +455,7 @@ pub enum AVColorRange {
 	AVCOL_RANGE_NB,
 }
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVChromaLocation {
 	AVCHROMA_LOC_UNSPECIFIED = 0,
diff --git a/sys/src/avutil/samplefmt.rs b/sys/src/avutil/samplefmt.rs
index 5ae9671..303e897 100644
--- a/sys/src/avutil/samplefmt.rs
+++ b/sys/src/avutil/samplefmt.rs
@@ -1,6 +1,6 @@
 use libc::{c_char, c_int, uint8_t};
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVSampleFormat {
 	AV_SAMPLE_FMT_NONE = -1,
diff --git a/sys/src/avutil/stereo3d.rs b/sys/src/avutil/stereo3d.rs
index efb0efc..071214d 100644
--- a/sys/src/avutil/stereo3d.rs
+++ b/sys/src/avutil/stereo3d.rs
@@ -1,7 +1,7 @@
 use libc::{c_int};
 use super::frame::AVFrame;
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVStereo3DType {
 	AV_STEREO3D_2D,
diff --git a/sys/src/avutil/string.rs b/sys/src/avutil/string.rs
index f297169..63d4aac 100644
--- a/sys/src/avutil/string.rs
+++ b/sys/src/avutil/string.rs
@@ -1,6 +1,6 @@
 use libc::{c_char, c_int, c_uint, uint8_t, int32_t, size_t, c_double};
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVEscapeMode {
 	AV_ESCAPE_MODE_AUTO,
diff --git a/sys/src/avutil/util.rs b/sys/src/avutil/util.rs
index d062e71..1abb193 100644
--- a/sys/src/avutil/util.rs
+++ b/sys/src/avutil/util.rs
@@ -5,7 +5,7 @@ pub const AV_NOPTS_VALUE: int64_t    = 0x8000000000000000u64 as int64_t;
 pub const AV_TIME_BASE:   int64_t    = 1000000;
 pub const AV_TIME_BASE_Q: AVRational = AVRational { num: 1, den: AV_TIME_BASE as c_int };
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVMediaType {
 	AVMEDIA_TYPE_UNKNOWN = -1,
@@ -17,7 +17,7 @@ pub enum AVMediaType {
 	AVMEDIA_TYPE_NB
 }
 
-#[derive(Eq, PartialEq, Debug)]
+#[derive(Eq, PartialEq, Copy, Clone, Debug)]
 #[repr(C)]
 pub enum AVPictureType {
 	AV_PICTURE_TYPE_NONE = 0,