diff --git a/Cargo.lock b/Cargo.lock
index c91272112..be6c13915 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -378,9 +378,12 @@ checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
 [[package]]
 name = "bytes"
-version = "1.1.0"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
+checksum = "f0b3de4a0c5e67e16066a0715723abd91edc2f9001d09c46e1dca929351e130e"
+dependencies = [
+ "serde 1.0.139",
+]
 
 [[package]]
 name = "cache-padded"
@@ -3964,6 +3967,7 @@ dependencies = [
  "async-process",
  "async-trait",
  "base64",
+ "bytes",
  "cc",
  "cfg-if 1.0.0",
  "clap 3.2.12",
diff --git a/libs/scrap/examples/capture_mag.rs b/libs/scrap/examples/capture_mag.rs
index c0505141e..81b2d8573 100644
--- a/libs/scrap/examples/capture_mag.rs
+++ b/libs/scrap/examples/capture_mag.rs
@@ -4,7 +4,7 @@ extern crate scrap;
 use std::fs::File;
 
 #[cfg(windows)]
-use scrap::CapturerMag;
+use scrap::{CapturerMag, TraitCapturer};
 use scrap::{i420_to_rgb, Display};
 
 fn main() {
diff --git a/libs/scrap/examples/ffplay.rs b/libs/scrap/examples/ffplay.rs
index 2c685b931..b8fe16e35 100644
--- a/libs/scrap/examples/ffplay.rs
+++ b/libs/scrap/examples/ffplay.rs
@@ -3,7 +3,7 @@ use std::time::Duration;
 extern crate scrap;
 
 fn main() {
-    use scrap::{Capturer, Display};
+    use scrap::{Capturer, Display, TraitCapturer};
     use std::io::ErrorKind::WouldBlock;
     use std::io::Write;
     use std::process::{Command, Stdio};
diff --git a/libs/scrap/examples/record-screen.rs b/libs/scrap/examples/record-screen.rs
index e099a8d1e..5df97838e 100644
--- a/libs/scrap/examples/record-screen.rs
+++ b/libs/scrap/examples/record-screen.rs
@@ -18,7 +18,7 @@ use webm::mux;
 use webm::mux::Track;
 
 use scrap::vpxcodec as vpx_encode;
-use scrap::{Capturer, Display, STRIDE_ALIGN};
+use scrap::{TraitCapturer, Capturer, Display, STRIDE_ALIGN};
 
 const USAGE: &'static str = "
 Simple WebM screen capture.
diff --git a/libs/scrap/examples/screenshot.rs b/libs/scrap/examples/screenshot.rs
index b6bf8a1d9..636768eb8 100644
--- a/libs/scrap/examples/screenshot.rs
+++ b/libs/scrap/examples/screenshot.rs
@@ -6,7 +6,7 @@ use std::io::ErrorKind::WouldBlock;
 use std::thread;
 use std::time::Duration;
 
-use scrap::{i420_to_rgb, Capturer, Display};
+use scrap::{i420_to_rgb, Capturer, Display, TraitCapturer};
 
 fn main() {
     let n = Display::all().unwrap().len();
diff --git a/libs/scrap/src/common/android.rs b/libs/scrap/src/common/android.rs
index 8322da3cd..e15752d8e 100644
--- a/libs/scrap/src/common/android.rs
+++ b/libs/scrap/src/common/android.rs
@@ -32,8 +32,12 @@ impl Capturer {
     pub fn height(&self) -> usize {
         self.display.height() as usize
     }
+}
 
-    pub fn frame<'a>(&'a mut self, _timeout: Duration) -> io::Result<Frame<'a>> {
+impl TraitCapturer for Capturer {
+    fn set_use_yuv(&mut self, _use_yuv: bool) {}
+
+    fn frame<'a>(&'a mut self, _timeout: Duration) -> io::Result<Frame<'a>> {
         if let Some(buf) = get_video_raw() {
             crate::would_block_if_equal(&mut self.saved_raw_data, buf)?;
             rgba_to_i420(self.width(), self.height(), buf, &mut self.bgra);
diff --git a/libs/scrap/src/common/dxgi.rs b/libs/scrap/src/common/dxgi.rs
index 855ac7ac3..963f39de1 100644
--- a/libs/scrap/src/common/dxgi.rs
+++ b/libs/scrap/src/common/dxgi.rs
@@ -1,7 +1,12 @@
-use crate::dxgi;
-use std::io::ErrorKind::{NotFound, TimedOut, WouldBlock};
-use std::time::Duration;
-use std::{io, ops};
+use crate::{common::TraitCapturer, dxgi};
+use std::{
+    io::{
+        self,
+        ErrorKind::{NotFound, TimedOut, WouldBlock},
+    },
+    ops,
+    time::Duration,
+};
 
 pub struct Capturer {
     inner: dxgi::Capturer,
@@ -21,18 +26,6 @@ impl Capturer {
         })
     }
 
-    pub fn set_use_yuv(&mut self, use_yuv: bool) {
-        self.inner.set_use_yuv(use_yuv);
-    }
-
-    pub fn is_gdi(&self) -> bool {
-        self.inner.is_gdi()
-    }
-
-    pub fn set_gdi(&mut self) -> bool {
-        self.inner.set_gdi()
-    }
-
     pub fn cancel_gdi(&mut self) {
         self.inner.cancel_gdi()
     }
@@ -44,14 +37,28 @@ impl Capturer {
     pub fn height(&self) -> usize {
         self.height
     }
+}
 
-    pub fn frame<'a>(&'a mut self, timeout: Duration) -> io::Result<Frame<'a>> {
+impl TraitCapturer for Capturer {
+    fn set_use_yuv(&mut self, use_yuv: bool) {
+        self.inner.set_use_yuv(use_yuv);
+    }
+
+    fn frame<'a>(&'a mut self, timeout: Duration) -> io::Result<Frame<'a>> {
         match self.inner.frame(timeout.as_millis() as _) {
             Ok(frame) => Ok(Frame(frame)),
             Err(ref error) if error.kind() == TimedOut => Err(WouldBlock.into()),
             Err(error) => Err(error),
         }
     }
+
+    fn is_gdi(&self) -> bool {
+        self.inner.is_gdi()
+    }
+
+    fn set_gdi(&mut self) -> bool {
+        self.inner.set_gdi()
+    }
 }
 
 pub struct Frame<'a>(&'a [u8]);
@@ -134,10 +141,6 @@ impl CapturerMag {
         })
     }
 
-    pub fn set_use_yuv(&mut self, use_yuv: bool) {
-        self.inner.set_use_yuv(use_yuv)
-    }
-
     pub fn exclude(&mut self, cls: &str, name: &str) -> io::Result<bool> {
         self.inner.exclude(cls, name)
     }
@@ -145,8 +148,23 @@ impl CapturerMag {
     pub fn get_rect(&self) -> ((i32, i32), usize, usize) {
         self.inner.get_rect()
     }
-    pub fn frame<'a>(&'a mut self, _timeout_ms: Duration) -> io::Result<Frame<'a>> {
+}
+
+impl TraitCapturer for CapturerMag {
+    fn set_use_yuv(&mut self, use_yuv: bool) {
+        self.inner.set_use_yuv(use_yuv)
+    }
+
+    fn frame<'a>(&'a mut self, _timeout_ms: Duration) -> io::Result<Frame<'a>> {
         self.inner.frame(&mut self.data)?;
         Ok(Frame(&self.data))
     }
+
+    fn is_gdi(&self) -> bool {
+        false
+    }
+
+    fn set_gdi(&mut self) -> bool {
+        false
+    }
 }
diff --git a/libs/scrap/src/common/linux.rs b/libs/scrap/src/common/linux.rs
index 8498ab7ff..866fb851a 100644
--- a/libs/scrap/src/common/linux.rs
+++ b/libs/scrap/src/common/linux.rs
@@ -1,6 +1,7 @@
 use crate::common::{
     wayland,
     x11::{self, Frame},
+    TraitCapturer,
 };
 use std::{io, time::Duration};
 
@@ -17,13 +18,6 @@ impl Capturer {
         })
     }
 
-    pub fn set_use_yuv(&mut self, use_yuv: bool) {
-        match self {
-            Capturer::X11(d) => d.set_use_yuv(use_yuv),
-            Capturer::WAYLAND(d) => d.set_use_yuv(use_yuv),
-        }
-    }
-
     pub fn width(&self) -> usize {
         match self {
             Capturer::X11(d) => d.width(),
@@ -37,8 +31,17 @@ impl Capturer {
             Capturer::WAYLAND(d) => d.height(),
         }
     }
+}
 
-    pub fn frame<'a>(&'a mut self, timeout: Duration) -> io::Result<Frame<'a>> {
+impl TraitCapturer for Capturer {
+    fn set_use_yuv(&mut self, use_yuv: bool) {
+        match self {
+            Capturer::X11(d) => d.set_use_yuv(use_yuv),
+            Capturer::WAYLAND(d) => d.set_use_yuv(use_yuv),
+        }
+    }
+
+    fn frame<'a>(&'a mut self, timeout: Duration) -> io::Result<Frame<'a>> {
         match self {
             Capturer::X11(d) => d.frame(timeout),
             Capturer::WAYLAND(d) => d.frame(timeout),
diff --git a/libs/scrap/src/common/mod.rs b/libs/scrap/src/common/mod.rs
index 9115bfd3a..4a9ade58d 100644
--- a/libs/scrap/src/common/mod.rs
+++ b/libs/scrap/src/common/mod.rs
@@ -49,3 +49,13 @@ pub fn would_block_if_equal(old: &mut Vec<u128>, b: &[u8]) -> std::io::Result<()
     old.copy_from_slice(b);
     Ok(())
 }
+
+pub trait TraitCapturer {
+    fn set_use_yuv(&mut self, use_yuv: bool);
+    fn frame<'a>(&'a mut self, timeout: std::time::Duration) -> std::io::Result<Frame<'a>>;
+
+    #[cfg(windows)]
+    fn is_gdi(&self) -> bool;
+    #[cfg(windows)]
+    fn set_gdi(&mut self) -> bool;
+}
diff --git a/libs/scrap/src/common/quartz.rs b/libs/scrap/src/common/quartz.rs
index 46ac1b56d..b4ecf898b 100644
--- a/libs/scrap/src/common/quartz.rs
+++ b/libs/scrap/src/common/quartz.rs
@@ -50,8 +50,14 @@ impl Capturer {
     pub fn height(&self) -> usize {
         self.inner.height()
     }
+}
 
-    pub fn frame<'a>(&'a mut self, _timeout_ms: std::time::Duration) -> io::Result<Frame<'a>> {
+impl TraitCapturer for Capturer {
+    fn set_use_yuv(&mut self, use_yuv: bool) {
+        self.use_yuv = use_yuv;
+    }
+
+    fn frame<'a>(&'a mut self, _timeout_ms: std::time::Duration) -> io::Result<Frame<'a>> {
         match self.frame.try_lock() {
             Ok(mut handle) => {
                 let mut frame = None;
diff --git a/libs/scrap/src/common/wayland.rs b/libs/scrap/src/common/wayland.rs
index 05bb08744..e33cbe745 100644
--- a/libs/scrap/src/common/wayland.rs
+++ b/libs/scrap/src/common/wayland.rs
@@ -1,4 +1,4 @@
-use crate::common::x11::Frame;
+use crate::common::{x11::Frame, TraitCapturer};
 use crate::wayland::{capturable::*, *};
 use std::{io, time::Duration};
 
@@ -14,10 +14,6 @@ impl Capturer {
         Ok(Capturer(display, r, yuv, Default::default()))
     }
 
-    pub fn set_use_yuv(&mut self, use_yuv: bool) {
-        self.2 = use_yuv;
-    }
-
     pub fn width(&self) -> usize {
         self.0.width()
     }
@@ -25,8 +21,14 @@ impl Capturer {
     pub fn height(&self) -> usize {
         self.0.height()
     }
+}
 
-    pub fn frame<'a>(&'a mut self, timeout: Duration) -> io::Result<Frame<'a>> {
+impl TraitCapturer for Capturer {
+    fn set_use_yuv(&mut self, use_yuv: bool) {
+        self.2 = use_yuv;
+    }
+
+    fn frame<'a>(&'a mut self, timeout: Duration) -> io::Result<Frame<'a>> {
         match self.1.capture(timeout.as_millis() as _).map_err(map_err)? {
             PixelProvider::BGR0(w, h, x) => Ok(Frame(if self.2 {
                 crate::common::bgra_to_i420(w as _, h as _, &x, &mut self.3);
diff --git a/libs/scrap/src/common/x11.rs b/libs/scrap/src/common/x11.rs
index c1a25c8d6..791514deb 100644
--- a/libs/scrap/src/common/x11.rs
+++ b/libs/scrap/src/common/x11.rs
@@ -1,4 +1,4 @@
-use crate::x11;
+use crate::{x11, common::TraitCapturer};
 use std::{io, ops, time::Duration};
 
 pub struct Capturer(x11::Capturer);
@@ -8,10 +8,6 @@ impl Capturer {
         x11::Capturer::new(display.0, yuv).map(Capturer)
     }
 
-    pub fn set_use_yuv(&mut self, use_yuv: bool) {
-        self.0.set_use_yuv(use_yuv);
-    }
-
     pub fn width(&self) -> usize {
         self.0.display().rect().w as usize
     }
@@ -19,8 +15,14 @@ impl Capturer {
     pub fn height(&self) -> usize {
         self.0.display().rect().h as usize
     }
+}
 
-    pub fn frame<'a>(&'a mut self, _timeout: Duration) -> io::Result<Frame<'a>> {
+impl TraitCapturer for Capturer {
+    fn set_use_yuv(&mut self, use_yuv: bool) {
+        self.0.set_use_yuv(use_yuv);
+    }
+
+    fn frame<'a>(&'a mut self, _timeout: Duration) -> io::Result<Frame<'a>> {
         Ok(Frame(self.0.frame()?))
     }
 }
diff --git a/src/server/video_service.rs b/src/server/video_service.rs
index e6ea713a1..2fb9f3dcd 100644
--- a/src/server/video_service.rs
+++ b/src/server/video_service.rs
@@ -26,11 +26,11 @@ use hbb_common::tokio::sync::{
 use scrap::{
     codec::{Encoder, EncoderCfg, HwEncoderConfig},
     vpxcodec::{VpxEncoderConfig, VpxVideoCodecId},
-    Capturer, Display, Frame,
+    Capturer, Display, TraitCapturer,
 };
 use std::{
     collections::HashSet,
-    io::{ErrorKind::WouldBlock, Result},
+    io::ErrorKind::WouldBlock,
     ops::{Deref, DerefMut},
     time::{self, Duration, Instant},
 };
@@ -128,56 +128,6 @@ impl VideoFrameController {
     }
 }
 
-pub(super) trait TraitCapturer {
-    fn frame<'a>(&'a mut self, timeout: Duration) -> Result<Frame<'a>>;
-
-    fn set_use_yuv(&mut self, use_yuv: bool);
-
-    #[cfg(windows)]
-    fn is_gdi(&self) -> bool;
-    #[cfg(windows)]
-    fn set_gdi(&mut self) -> bool;
-}
-
-impl TraitCapturer for Capturer {
-    fn frame<'a>(&'a mut self, timeout: Duration) -> Result<Frame<'a>> {
-        self.frame(timeout)
-    }
-
-    fn set_use_yuv(&mut self, use_yuv: bool) {
-        self.set_use_yuv(use_yuv);
-    }
-
-    #[cfg(windows)]
-    fn is_gdi(&self) -> bool {
-        self.is_gdi()
-    }
-
-    #[cfg(windows)]
-    fn set_gdi(&mut self) -> bool {
-        self.set_gdi()
-    }
-}
-
-#[cfg(windows)]
-impl TraitCapturer for scrap::CapturerMag {
-    fn frame<'a>(&'a mut self, _timeout_ms: Duration) -> Result<Frame<'a>> {
-        self.frame(_timeout_ms)
-    }
-
-    fn set_use_yuv(&mut self, use_yuv: bool) {
-        self.set_use_yuv(use_yuv);
-    }
-
-    fn is_gdi(&self) -> bool {
-        false
-    }
-
-    fn set_gdi(&mut self) -> bool {
-        false
-    }
-}
-
 pub fn new() -> GenericService {
     let sp = GenericService::new(NAME, true);
     sp.run(run);
diff --git a/src/server/wayland.rs b/src/server/wayland.rs
index e84be3f7c..1ac2c18be 100644
--- a/src/server/wayland.rs
+++ b/src/server/wayland.rs
@@ -1,30 +1,39 @@
 use super::*;
 use hbb_common::allow_err;
-use scrap::{Capturer, Display, Frame};
-use std::{io::Result, time::Duration};
+use scrap::{Capturer, Display, Frame, TraitCapturer};
+use std::io::Result;
 
 lazy_static::lazy_static! {
     static ref CAP_DISPLAY_INFO: RwLock<u64> = RwLock::new(0);
 }
+
+struct CapturerPtr(*mut Capturer);
+
+impl Clone for CapturerPtr {
+    fn clone(&self) -> Self {
+        Self(self.0)
+    }
+}
+
+impl TraitCapturer for CapturerPtr {
+    fn frame<'a>(&'a mut self, timeout: Duration) -> Result<Frame<'a>> {
+        unsafe { (*self.0).frame(timeout) }
+    }
+
+    fn set_use_yuv(&mut self, use_yuv: bool) {
+        unsafe {
+            (*self.0).set_use_yuv(use_yuv);
+        }
+    }
+}
+
 struct CapDisplayInfo {
     rects: Vec<((i32, i32), usize, usize)>,
     displays: Vec<DisplayInfo>,
     num: usize,
     primary: usize,
     current: usize,
-    capturer: *mut Capturer,
-}
-
-impl super::video_service::TraitCapturer for *mut Capturer {
-    fn frame<'a>(&'a mut self, timeout: Duration) -> Result<Frame<'a>> {
-        unsafe { (**self).frame(timeout) }
-    }
-
-    fn set_use_yuv(&mut self, use_yuv: bool) {
-        unsafe {
-            (**self).set_use_yuv(use_yuv);
-        }
-    }
+    capturer: CapturerPtr,
 }
 
 async fn check_init() -> ResultType<()> {
@@ -68,6 +77,7 @@ async fn check_init() -> ResultType<()> {
                 let capturer = Box::into_raw(Box::new(
                     Capturer::new(display, true).with_context(|| "Failed to create capturer")?,
                 ));
+                let capturer = CapturerPtr(capturer);
                 let cap_display_info = Box::into_raw(Box::new(CapDisplayInfo {
                     rects,
                     displays,
@@ -104,7 +114,7 @@ pub fn clear() {
     if *lock != 0 {
         unsafe {
             let cap_display_info = Box::from_raw(*lock as *mut CapDisplayInfo);
-            let _ = Box::from_raw(cap_display_info.capturer);
+            let _ = Box::from_raw(cap_display_info.capturer.0);
         }
         *lock = 0;
     }
@@ -170,7 +180,7 @@ pub(super) fn get_capturer() -> ResultType<super::video_service::CapturerInfo> {
                 current: cap_display_info.current,
                 privacy_mode_id: 0,
                 _captuerer_privacy_mode_id: 0,
-                capturer: Box::new(cap_display_info.capturer),
+                capturer: Box::new(cap_display_info.capturer.clone()),
             })
         }
     } else {