diff --git a/src/muxer/hls/mp4/atoms.rs b/src/muxer/hls/mp4/atoms.rs
index fa35ba1..168c190 100644
--- a/src/muxer/hls/mp4/atoms.rs
+++ b/src/muxer/hls/mp4/atoms.rs
@@ -1057,12 +1057,14 @@ impl MP4Atom for MFHD {
 
 struct TRAF {
     tfhd: TFHD,
+    tfdt: TFDT,
     trun: TRUN,
 }
 
 impl MP4Atom for TRAF {
     fn marshall(&self) -> Vec<u8> {
         let mut content = self.tfhd.marshall();
+        content.append(&mut self.tfdt.marshall());
         content.append(&mut self.trun.marshall());
         make_box(content, *b"traf")
     }
@@ -1097,6 +1099,36 @@ impl Default for TFHD {
     }
 }
 
+struct TFDT {
+    version: u8,
+    flags: u32,
+    start_time: u64,
+}
+
+impl MP4Atom for TFDT {
+    fn marshall(&self) -> Vec<u8> {
+        let mut content = Vec::new();
+        content.push(self.version);
+        content.extend_from_slice(&self.flags.to_be_bytes()[1..]);
+        if self.version == 1 {
+            content.extend_from_slice(&self.start_time.to_be_bytes());
+        } else {
+            content.extend_from_slice(&(self.start_time as u32).to_be_bytes());
+        }
+        make_box(content, *b"tfdt")
+    }
+}
+
+impl Default for TFDT {
+    fn default() -> Self {
+        TFDT {
+            version: 0,
+            flags: 0,
+            start_time: 0,
+        }
+    }
+}
+
 struct TRUN {
     version: u8,
     flags: u32,
@@ -1160,7 +1192,7 @@ impl MP4Atom for MDAT {
 }
 
 pub fn new_moof(v_samples: &Vec<samples::Sample>, default_dur_v: u32, a_samples: &Vec<samples::Sample>, default_dur_a: u32, mdat_v_offset: usize, mdat_a_offset: usize, moof_idx: usize) -> MOOF {
-    let mdat_data_start = 120 + v_samples.len() * 8 + a_samples.len() * 8 + 8;
+    let mdat_data_start = 152 + v_samples.len() * 8 + a_samples.len() * 8 + 8;
     MOOF {
         mfhd: MFHD { seq_num: moof_idx as u32, ..Default::default() },
         trafs: [ TRAF {
@@ -1170,6 +1202,10 @@ pub fn new_moof(v_samples: &Vec<samples::Sample>, default_dur_v: u32, a_samples:
                 ..Default::default()
             },
             trun: new_trun(v_samples, mdat_v_offset + mdat_data_start),
+            tfdt: TFDT {
+                start_time: default_dur_v as u64 * (v_samples.len() * (moof_idx - 1)) as u64,
+                ..Default::default()
+            },
         }, TRAF{
             tfhd: TFHD {
                 track_id: 2,
@@ -1177,6 +1213,10 @@ pub fn new_moof(v_samples: &Vec<samples::Sample>, default_dur_v: u32, a_samples:
                 ..Default::default()
             },
             trun: new_trun(a_samples, mdat_a_offset + mdat_data_start),
+            tfdt: TFDT {
+                start_time: default_dur_a as u64 * (a_samples.len()  * (moof_idx - 1)) as u64,
+                ..Default::default()
+            },
         } ],
     }
 }
diff --git a/src/muxer/hls/mp4/mp4muxer.rs b/src/muxer/hls/mp4/mp4muxer.rs
index 6a52436..ca7b3ba 100644
--- a/src/muxer/hls/mp4/mp4muxer.rs
+++ b/src/muxer/hls/mp4/mp4muxer.rs
@@ -54,13 +54,14 @@ impl mp4::MP4Muxer {
                         return
                     }
                 }
+                i += 1;
             }
         });
 
         thread::spawn(move || {
             loop {
                 match a.recv() {
-                    Ok(x) => {a_queue.push(x.packet_data, 0x01010000);},
+                    Ok(x) => {a_queue.push(x.packet_data, 0x02000000);},
                     Err(_) => {
                         util::thread_freeze(err_in2, Box::new(util::MuxerError::AudioEOF));
                         return
diff --git a/src/muxer/hls/segments.rs b/src/muxer/hls/segments.rs
index 402ef16..233db87 100644
--- a/src/muxer/hls/segments.rs
+++ b/src/muxer/hls/segments.rs
@@ -18,7 +18,7 @@ pub struct Segment {
 impl Segment {
     pub fn dump(&self) {
         let mdat = self.new_mdat();
-        let moof = atoms::new_moof(&self.segment_video, self.sample_duration_v, &self.segment_audio, self.sample_duration_a, 0, mdat.v_samples.len(), self.idx);
+        let moof = atoms::new_moof(&self.segment_video, self.sample_duration_v, &self.segment_audio, self.sample_duration_a, 0, mdat.v_samples.len(), self.idx + 1);
         let mut segment_bytes = moof.marshall();
         segment_bytes.append(&mut mdat.marshall());