diff --git a/src/mp4enc.cpp b/src/mp4enc.cpp
index 7a47fdd..8266f6c 100644
--- a/src/mp4enc.cpp
+++ b/src/mp4enc.cpp
@@ -134,9 +134,9 @@ bool MP4Encoder::encode(const Image& rgba) noexcept
                 nalu_bytes[i] = info.sLayerInfo[layer].pBsBuf[bs_size + i];
             if (nalu_bytes[4] == 0x67) // SPS
             {
-                uint8_t avc_profile = info.sLayerInfo[layer].pBsBuf[bs_size + 5];
-                uint8_t avc_profile_compat = info.sLayerInfo[layer].pBsBuf[bs_size + 6];
-                uint8_t avc_level = info.sLayerInfo[layer].pBsBuf[bs_size + 7];
+                m_header.avc_profile = info.sLayerInfo[layer].pBsBuf[bs_size + 5];
+                m_header.avc_compat = info.sLayerInfo[layer].pBsBuf[bs_size + 6];
+                m_header.avc_level = info.sLayerInfo[layer].pBsBuf[bs_size + 7];
                 uint8_t* ptr = info.sLayerInfo[layer].pBsBuf + bs_size + 4;
                 size_t sz = info.sLayerInfo[layer].pNalLengthInByte[nal] - 4ull;
                 m_header.SPS_data = std::vector<uint8_t>(ptr, ptr + sz);