1 files changed, 3 insertions, 0 deletions
diff --git a/remuxer/mp4/src/lib.rs b/remuxer/mp4/src/lib.rs
index 7af8417..2098e1b 100644
--- a/remuxer/mp4/src/lib.rs
+++ b/remuxer/mp4/src/lib.rs
@@ -12,6 +12,9 @@ impl<'a> BoxW<'a> {
     pub fn new(buffer: &'a mut Vec<u8>) -> Self {
         Self(buffer)
     }
+    pub fn buffer_mut(&mut self) -> &mut Vec<u8> {
+        self.0
+    }
     pub fn write<T: WriteBox>(&mut self, b: T) {
         let start = self.0.len();
         self.0.extend(0u32.to_be_bytes());