diff --git a/multimedia/av_codec/native_avcodec_base.h b/multimedia/av_codec/native_avcodec_base.h
index ff33bb1c961a96f32ca53a47b638bc242084c66b..22f6f08bc10ccc63cb0bfcbe4dd4d3190a20827c 100644
--- a/multimedia/av_codec/native_avcodec_base.h
+++ b/multimedia/av_codec/native_avcodec_base.h
@@ -1367,6 +1367,11 @@ typedef enum OH_AVOutputFormat {
      * @since 18
      */
     AV_OUTPUT_FORMAT_AAC = 11,
+    /**
+     * The muxer output flac file format.
+     * @since 20
+     */
+    AV_OUTPUT_FORMAT_FLAC = 12,
 } OH_AVOutputFormat;
 
 /**