SMF: channels data (stereo) and dummy rate to not confuse codecs

modules/demux/smf.c

@@ -231,6 +231,10 @@ static int Open (vlc_object_t * p_this)
 
     es_format_t  fmt;
     es_format_Init (&fmt, AUDIO_ES, VLC_FOURCC('M', 'I', 'D', 'I'));
+    fmt.audio.i_channels = 2;
+    fmt.audio.i_original_channels = fmt.audio.i_physical_channels =
+        AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
+    fmt.audio.i_rate = 44100; /* dummy value */
     p_sys->es = es_out_Add (p_demux->out, &fmt);
 
     return VLC_SUCCESS;