diff --git a/Cargo.lock b/Cargo.lock
index 7a8d802..6959f76 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -172,7 +172,7 @@ dependencies = [
 
 [[package]]
 name = "dolby_vision"
-version = "1.3.1"
+version = "1.3.2"
 dependencies = [
  "anyhow",
  "bitvec",
@@ -185,7 +185,7 @@ dependencies = [
 
 [[package]]
 name = "dovi_tool"
-version = "1.3.1"
+version = "1.3.2"
 dependencies = [
  "anyhow",
  "bitvec",
diff --git a/Cargo.toml b/Cargo.toml
index 089c3a4..f8dd4a8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "dovi_tool"
-version = "1.3.1"
+version = "1.3.2"
 authors = ["quietvoid"]
 edition = "2018"
 rust-version = "1.51.0"
diff --git a/assets/tests/profile5-02.bin b/assets/tests/profile5-02.bin
new file mode 100644
index 0000000..0d2b0e7
Binary files /dev/null and b/assets/tests/profile5-02.bin differ
diff --git a/assets/tests/profile8_from_profile5-02.bin b/assets/tests/profile8_from_profile5-02.bin
new file mode 100644
index 0000000..e3fde62
Binary files /dev/null and b/assets/tests/profile8_from_profile5-02.bin differ
diff --git a/dolby_vision/Cargo.toml b/dolby_vision/Cargo.toml
index db62af1..350f653 100644
--- a/dolby_vision/Cargo.toml
+++ b/dolby_vision/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "dolby_vision"
-version = "1.3.1"
+version = "1.3.2"
 authors = ["quietvoid"]
 edition = "2018"
 rust-version = "1.55.0"
diff --git a/dolby_vision/src/rpu/dovi_rpu.rs b/dolby_vision/src/rpu/dovi_rpu.rs
index 139f531..1c45997 100644
--- a/dolby_vision/src/rpu/dovi_rpu.rs
+++ b/dolby_vision/src/rpu/dovi_rpu.rs
@@ -324,15 +324,10 @@ impl DoviRpu {
             self.header.bl_video_full_range_flag = false;
 
             self.header.num_pivots_minus_2 = [0, 0, 0];
-            self.header
-                .pred_pivot_value
-                .iter_mut()
-                .filter(|v| !v.is_empty())
-                .for_each(|v| {
-                    v.truncate(2);
-                    v[0] = 0;
-                    v[1] = 1023;
-                });
+            self.header.pred_pivot_value.iter_mut().for_each(|v| {
+                v.clear();
+                v.extend(&[0, 1023]);
+            });
 
             if let Some(ref mut rpu_data_mapping) = self.rpu_data_mapping {
                 rpu_data_mapping.p5_to_p81();
diff --git a/dolby_vision/src/rpu/rpu_data_mapping.rs b/dolby_vision/src/rpu/rpu_data_mapping.rs
index 5fb4ab7..37a3e98 100644
--- a/dolby_vision/src/rpu/rpu_data_mapping.rs
+++ b/dolby_vision/src/rpu/rpu_data_mapping.rs
@@ -319,133 +319,65 @@ impl RpuDataMapping {
     }
 
     pub fn p5_to_p81(&mut self) {
-        self.mapping_idc
-            .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v[0] = 0;
-            });
+        self.mapping_idc.iter_mut().for_each(|v| {
+            v.clear();
+            v.push(0);
+        });
 
-        self.mapping_param_pred_flag
-            .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v[0] = false;
-            });
+        self.mapping_param_pred_flag.iter_mut().for_each(|v| {
+            v.clear();
+            v.push(false);
+        });
 
-        self.num_mapping_param_predictors
-            .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v[0] = 0;
-            });
+        self.num_mapping_param_predictors.iter_mut().for_each(|v| {
+            v.clear();
+            v.push(0);
+        });
 
         self.diff_pred_part_idx_mapping_minus1
             .iter_mut()
-            .filter(|v| !v.is_empty())
             .for_each(|v| {
-                v.truncate(1);
-                v[0] = 0;
+                v.clear();
+                v.push(0);
             });
 
-        self.poly_order_minus1
-            .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v[0] = 0;
-            });
+        self.poly_order_minus1.iter_mut().for_each(|v| {
+            v.clear();
+            v.push(0);
+        });
 
-        self.linear_interp_flag
-            .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v[0] = false;
-            });
+        self.linear_interp_flag.iter_mut().for_each(|v| {
+            v.clear();
+            v.push(false);
+        });
 
         self.pred_linear_interp_value_int
             .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v[0] = 0;
-            });
+            .for_each(|v| v.clear());
 
         self.pred_linear_interp_value
             .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v[0] = 0;
-            });
+            .for_each(|v| v.clear());
 
-        self.poly_coef_int
-            .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v.iter_mut().filter(|v| !v.is_empty()).for_each(|v2| {
-                    v2.truncate(2);
-                    v2[0] = 0;
-                    v2[1] = 1;
-                });
-            });
+        self.poly_coef_int.iter_mut().for_each(|v| {
+            v.clear();
+            v.push(vec![0, 1]);
+        });
 
-        self.poly_coef
-            .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v.iter_mut().filter(|v| !v.is_empty()).for_each(|v2| {
-                    v2.truncate(2);
-                    v2[0] = 0;
-                    v2[1] = 0;
-                });
-            });
+        self.poly_coef.iter_mut().for_each(|v| {
+            v.clear();
+            v.push(vec![0, 0]);
+        });
 
-        self.mmr_order_minus1
-            .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v[0] = 0;
-            });
+        self.mmr_order_minus1.iter_mut().for_each(|v| v.clear());
 
-        self.mmr_constant_int
-            .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v[0] = 0;
-            });
+        self.mmr_constant_int.iter_mut().for_each(|v| v.clear());
 
-        self.mmr_constant
-            .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v[0] = 0;
-            });
+        self.mmr_constant.iter_mut().for_each(|v| v.clear());
 
-        self.mmr_coef_int
-            .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v[0] = vec![];
-            });
+        self.mmr_coef_int.iter_mut().for_each(|v| v.clear());
 
-        self.mmr_coef
-            .iter_mut()
-            .filter(|v| !v.is_empty())
-            .for_each(|v| {
-                v.truncate(1);
-                v[0] = vec![];
-            });
+        self.mmr_coef.iter_mut().for_each(|v| v.clear());
     }
 
     pub fn p8_default() -> RpuDataMapping {
diff --git a/src/dovi/tests.rs b/src/dovi/tests.rs
index b2e09e3..d20b9e1 100644
--- a/src/dovi/tests.rs
+++ b/src/dovi/tests.rs
@@ -16,6 +16,25 @@ pub fn _parse_file(input: PathBuf) -> Result<(Vec<u8>, DoviRpu)> {
     Ok((original_data, dovi_rpu))
 }
 
+fn _debug(data: &[u8]) -> Result<()> {
+    use crate::dovi::OUT_NAL_HEADER;
+    use std::fs::OpenOptions;
+    use std::io::Write;
+
+    let mut file = OpenOptions::new()
+        .write(true)
+        .create(true)
+        .truncate(true)
+        .open("test.bin")?;
+
+    file.write_all(OUT_NAL_HEADER)?;
+    file.write_all(&data[2..])?;
+
+    file.flush()?;
+
+    Ok(())
+}
+
 #[test]
 fn profile4() -> Result<()> {
     let (original_data, dovi_rpu) = _parse_file(PathBuf::from("./assets/tests/profile4.bin"))?;
@@ -329,3 +348,48 @@ fn p8_to_mel() -> Result<()> {
 
     Ok(())
 }
+
+#[test]
+fn profile5_to_p81() -> Result<()> {
+    let (original_data, mut dovi_rpu) = _parse_file(PathBuf::from("./assets/tests/profile5.bin"))?;
+    assert_eq!(dovi_rpu.dovi_profile, 5);
+    let mut parsed_data = dovi_rpu.write_hevc_unspec62_nalu()?;
+
+    assert_eq!(&original_data[4..], &parsed_data[2..]);
+
+    // Profile 5 to 8.1
+    let (p81_data, p81_rpu) = _parse_file(PathBuf::from("./assets/tests/profile8.bin"))?;
+    assert_eq!(p81_rpu.dovi_profile, 8);
+
+    dovi_rpu.convert_with_mode(3)?;
+    parsed_data = dovi_rpu.write_hevc_unspec62_nalu()?;
+    assert_eq!(&p81_data[4..], &parsed_data[2..]);
+
+    assert_eq!(dovi_rpu.dovi_profile, 8);
+
+    Ok(())
+}
+
+#[test]
+fn profile5_to_p81_2() -> Result<()> {
+    let (original_data, mut dovi_rpu) =
+        _parse_file(PathBuf::from("./assets/tests/profile5-02.bin"))?;
+    assert_eq!(dovi_rpu.dovi_profile, 5);
+    let mut parsed_data = dovi_rpu.write_hevc_unspec62_nalu()?;
+
+    assert_eq!(&original_data[4..], &parsed_data[2..]);
+
+    // Profile 5 to 8.1
+    let (p81_data, p81_rpu) = _parse_file(PathBuf::from(
+        "./assets/tests/profile8_from_profile5-02.bin",
+    ))?;
+    assert_eq!(p81_rpu.dovi_profile, 8);
+
+    dovi_rpu.convert_with_mode(3)?;
+    parsed_data = dovi_rpu.write_hevc_unspec62_nalu()?;
+    assert_eq!(&p81_data[4..], &parsed_data[2..]);
+
+    assert_eq!(dovi_rpu.dovi_profile, 8);
+
+    Ok(())
+}