diff --git a/source/examples/aacenc/aacenc.cpp b/source/examples/aacenc/aacenc.cpp
index fb003d3..e7893e8 100644
--- a/source/examples/aacenc/aacenc.cpp
+++ b/source/examples/aacenc/aacenc.cpp
@@ -23,7 +23,7 @@ int main(int argc, char *argv[]) {
     ap.add_argument("input");
     ap.add_argument("output");
 
-    ap.add_argument("-a", "--adts").flag();
+    ap.add_argument("-a", "--adts").help("ADTS format").flag();
     ap.add_argument("-b", "--bitrate").help("Bit rate").default_value(128).scan<'i', int>();
     ap.add_argument("-c", "--cutoff").help("Cutoff frequency").default_value(0).scan<'i', int>();
     ap.add_argument("-e", "--enhanced-sbr").help("Enhanced SBR").flag();
@@ -112,6 +112,12 @@ int main(int argc, char *argv[]) {
         tr.u.a.channelcount = 1;
         audio_track_id = MP4E_add_track(mux, &tr);
         MP4E_set_dsi(mux, audio_track_id, aacEncode->asc, aacEncode->ascSize);
+
+        printf("Extradata: ");
+        for (uint32_t i = 0; i < aacEncode->ascSize; i++) {
+            printf("%02x ", aacEncode->asc[i]);
+        }
+        printf("\n");
     }
 
     size_t numSamples = audioFile.getNumSamplesPerChannel();