diff --git a/BUILD.gn b/BUILD.gn
index 67adde0b05..6b4ce28934 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -147,7 +147,6 @@ config("ffmpeg_config") {
     "-DOHOS_SUBTITLE_DEMUXER",
     "-DOHOS_EXPAND_MP4_INFO",
     "-DOHOS_OPTIMIZE_DELAY",
-    "-DOHOS_AV3A_DEMUXER",
   ]
   if (use_musl) {
     cflags += [ "-Wno-bool-operation" ]
@@ -1118,9 +1117,7 @@ ohos_source_set("ffmpeg_dynamic") {
     # "//third_party/ffmpeg/libavformat/async.c",
     # "//third_party/ffmpeg/libavformat/au.c",
     "//third_party/ffmpeg/libavformat/av1.c",
-    "//third_party/ffmpeg/libavformat/av3adec.c",
     "//third_party/ffmpeg/libavformat/avc.c",
-
     "//third_party/ffmpeg/libavformat/avidec.c",
     "//third_party/ffmpeg/libavformat/avio.c",
     "//third_party/ffmpeg/libavformat/aviobuf.c",