diff --git a/src/encode/cmds.rs b/src/encode/cmds.rs
index f7f8d67..60df077 100644
--- a/src/encode/cmds.rs
+++ b/src/encode/cmds.rs
@@ -6,7 +6,7 @@ use crate::util;
 use crate::encode::codecs::Encoder;
 use crate::encode::codecs;
 
-pub fn spawn(metadata: Arc<util::Metadata>, v_target: util::VideoCodec, a_target: util::AudioCodec) -> Result<(impl Encoder, impl Encoder), Box<dyn Error>> {
+pub fn spawn(metadata: Arc<util::Metadata>, v_target: util::VideoCodec, a_target: util::AudioCodec) -> Result<(impl Encoder + Send, impl Encoder + Send), Box<dyn Error>> {
     let v = match v_target {
         util::VideoCodec::AV1 => codecs::video::new_av1(metadata.clone())?,
         _ => return Err(Box::new(util::EncoderError::CodecNotSupported))
@@ -18,9 +18,13 @@ pub fn spawn(metadata: Arc<util::Metadata>, v_target: util::VideoCodec, a_target
     Ok((v, a))
 }
 
-pub fn handle_encoder(mut encoder: impl Encoder, c_in: mpsc::Receiver<util::RawMedia>, c_out: mpsc::Sender<util::NALUPacket>, c_err: mpsc::Sender<Box<dyn Error + Send + Sync>>) {
+pub fn handle_encoder(mut encoder: impl Encoder + Send + 'static, c_in: mpsc::Receiver<util::RawMedia>, c_out: mpsc::Sender<util::NALUPacket>, c_err: mpsc::Sender<Box<dyn Error + Send + Sync>>) {
     let stdin = encoder.stdin();
+    let c_err2 = c_err.clone();
     thread::spawn(move || {
         codecs::read_raw_loop(stdin, c_in, c_err);
     });
+    thread::spawn(move || {
+        encoder.write_nalu_loop(c_out, c_err2);
+    });
 }
diff --git a/src/encode/codecs/audio.rs b/src/encode/codecs/audio.rs
index edb12ad..b833681 100644
--- a/src/encode/codecs/audio.rs
+++ b/src/encode/codecs/audio.rs
@@ -32,25 +32,29 @@ impl Encoder for OpusEncoder {
         let num_segments = buff[buff.len() - 1] as usize;
         let mut segment_table_buff = vec![0u8; num_segments];
         stdout.read_exact(&mut segment_table_buff)?;
-        let mut data = vec![0u8; segment_table_buff.iter().sum::<u8>() as usize];
+        let mut page_size:usize = 0;
+        for i in segment_table_buff {
+            page_size += i as usize;
+        }
+        let mut data = vec![0u8; page_size];
         stdout.read_exact(&mut data)?;
         return Ok(util::NALUPacket {packet_type: util::NALUPacketType::Audio(util::AudioCodec::OPUS), packet_data: data});
     }
 }
 
 pub fn new_opus(metadata: Arc<util::Metadata>) -> Result<OpusEncoder, Box<dyn Error>> {
-    let f = File::create("dump.opus")?;
     let channels = metadata.audio.channels.to_string();
     let samplerate = metadata.audio.samplerate.to_string();
     let cmd = Command::new("opusenc")
         .args([
+            "--quiet",
             "--raw",
             "--raw-bits", "16",
             "--raw-rate", samplerate.as_str(),
             "--raw-chan", channels.as_str(),
             "--max-delay", "1",
             "-", "-"
-        ]).stdin(Stdio::piped()).stdout(f).spawn()?;
+        ]).stdin(Stdio::piped()).stdout(Stdio::piped()).spawn()?;
     return Ok(OpusEncoder {cmd: cmd});
 }
 
diff --git a/src/encode/codecs/mod.rs b/src/encode/codecs/mod.rs
index 5146823..bc4f215 100644
--- a/src/encode/codecs/mod.rs
+++ b/src/encode/codecs/mod.rs
@@ -39,10 +39,6 @@ fn write_raw(cmd_in: &mut ChildStdin, media: util::RawMedia) -> Result<(), Box<d
     Ok(())
 }
 
-fn read_nalu(cmd_out: &mut ChildStdout) -> Result<util::NALUPacket, Box<dyn Error>> {
-    todo!();
-}
-
 pub fn read_raw_loop(mut cmd_in: ChildStdin, c_in: mpsc::Receiver<util::RawMedia>, c_err: mpsc::Sender<Box<dyn Error + Send + Sync>>) {
     loop {
         let media = match c_in.recv() {
@@ -55,7 +51,3 @@ pub fn read_raw_loop(mut cmd_in: ChildStdin, c_in: mpsc::Receiver<util::RawMedia
         }
     }
 }
-
-pub fn write_nalu_loop(mut cmd_out: ChildStdout, c_out: mpsc::Sender<util::NALUPacket>, c_err: mpsc::Sender<Box<dyn Error + Send + Sync>>) {
-    todo!();
-}
diff --git a/src/encode/codecs/video.rs b/src/encode/codecs/video.rs
index 491366b..c31081f 100644
--- a/src/encode/codecs/video.rs
+++ b/src/encode/codecs/video.rs
@@ -1,7 +1,6 @@
 use std::error::Error;
 use std::process::{Child, Command, Stdio, ChildStdin};
 use std::sync::Arc;
-use std::fs::File;
 use std::io::Read;
 use std::io;
 
@@ -29,13 +28,13 @@ impl Encoder for AV1Encoder {
 
     fn read_nalu(&mut self) -> Result<util::NALUPacket, Box<dyn Error + Send + Sync>> {
         let mut stdout = self.cmd.stdout.as_mut().unwrap();
-        let mut buff = [0u8; 11];
+        let mut buff = [0u8; 12];
         match stdout.read_exact(&mut buff) {
             Ok(_) => (),
             Err(err) if err.kind() == io::ErrorKind::UnexpectedEof => return Err(Box::new(util::EncoderError::EOF)),
             Err(err) => return Err(Box::new(err))
         }
-        let nalu_len = (u32::from_le_bytes(buff[..4].try_into().unwrap()) & 0xffffff) as usize;
+        let nalu_len = u32::from_le_bytes(buff[..4].try_into().unwrap()) as usize;
         let mut data = vec![0u8; nalu_len];
         stdout.read_exact(data.as_mut_slice())?;
         return Ok(util::NALUPacket {packet_type: util::NALUPacketType::Video(util::VideoCodec::AV1), packet_data: data});
@@ -43,7 +42,6 @@ impl Encoder for AV1Encoder {
 }
 
 pub fn new_av1(metadata: Arc<util::Metadata>) -> Result<AV1Encoder, Box<dyn Error>> {
-    let f = File::create("dump.av1")?;
     let width = metadata.video.width.to_string();
     let height = metadata.video.height.to_string();
     let fps_num = ((metadata.video.framerate * 1000.0) as u32).to_string();
@@ -55,8 +53,9 @@ pub fn new_av1(metadata: Arc<util::Metadata>) -> Result<AV1Encoder, Box<dyn Erro
             "-h", height.as_str(),
             "--fps-num", fps_num.as_str(),
             "--preset", "12",
+            "--keyint", "30",
             "-i", "-",
             "-b", "-"
-        ]).stdin(Stdio::piped()).stdout(f).spawn()?;
+        ]).stdin(Stdio::piped()).stdout(Stdio::piped()).spawn()?;
     return Ok(AV1Encoder {cmd: cmd});
 }
diff --git a/src/muxer/mod.rs b/src/muxer/mod.rs
index ad1bddf..09db33d 100644
--- a/src/muxer/mod.rs
+++ b/src/muxer/mod.rs
@@ -1,6 +1,8 @@
 use std::sync::{mpsc, Arc};
 use std::error::Error;
 use std::thread;
+use std::fs::File;
+use std::io::Write;
 
 use crate::util;
 
@@ -15,11 +17,23 @@ pub fn spawn(
     let (err_in, err_out) = mpsc::channel();
     let metadata_handle = metadata.clone();
     thread::spawn(move || {
-        &v;
-        &a;
+        write_to_file(v, "dump.av1");
+    });
+    thread::spawn(move || {
+        write_to_file(a, "dump.opus");
+    });
+    thread::spawn(move || {
         &err_in;
         &metadata_handle;
         thread::park();
     });
     return Ok(err_out);
 }
+
+fn write_to_file(c: mpsc::Receiver<util::NALUPacket>, filename: &str) {
+    let mut f = File::create(filename).unwrap();
+    loop {
+        let nalu = c.recv().unwrap();
+        f.write_all(&nalu.packet_data);
+    }
+}