+ if( !p_preparser->b_live )
+ {
+ vlc_thread_t th;
+
+ if( vlc_clone( &th, Thread, p_preparser, VLC_THREAD_PRIORITY_LOW ) )
+ msg_Warn( p_preparser->p_playlist,
+ "cannot spawn pre-parser thread" );
+ else
+ {
+ vlc_detach( th );
+ p_preparser->b_live = true;
+ }
+ }