add video streams' BOS packets first

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/mux/ogg.c

@@ -619,16 +619,22 @@ static block_t *OggCreateHeader( sout_mux_t *p_mux )
 
     /* Write header for each stream. All b_o_s (beginning of stream) packets
      * must appear first in the ogg stream so we take care of them first. */
+    for( int pass = 0; pass < 2; pass++ )
+    {
         for( i = 0; i < p_mux->i_nb_inputs; i++ )
         {
             sout_input_t *p_input = p_mux->pp_inputs[i];
             ogg_stream_t *p_stream = (ogg_stream_t*)p_input->p_sys;
-        p_stream->b_new = false;
+
+            bool video = ( p_stream->i_fourcc == VLC_CODEC_THEORA || p_stream->i_fourcc == VLC_CODEC_DIRAC );
+            if( ( ( pass == 0 && !video ) || ( pass == 1 && video ) ) )
+                continue;
 
             msg_Dbg( p_mux, "creating header for %4.4s",
                      (char *)&p_stream->i_fourcc );
 
             ogg_stream_init( &p_stream->os, p_stream->i_serial_no );
+            p_stream->b_new = false;
             p_stream->i_packet_no = 0;
 
             if( p_stream->i_fourcc == VLC_CODEC_VORBIS ||
@@ -701,6 +707,7 @@ static block_t *OggCreateHeader( sout_mux_t *p_mux )
 
             block_ChainAppend( &p_hdr, p_og );
         }
+    }
 
     /* Take care of the non b_o_s headers */
     for( i = 0; i < p_mux->i_nb_inputs; i++ )