Keep audio as long as possible in fl32 format.

modules/stream_out/transcode.c

@@ -1327,8 +1327,9 @@ static int transcode_audio_new( sout_stream_t *p_stream,
     id->p_encoder->fmt_in.audio.i_format = id->p_decoder->fmt_out.i_codec;
 
     /* Initialization of encoder format structures */
-    es_format_Init( &id->p_encoder->fmt_in, AUDIO_ES, AOUT_FMT_S16_NE );
-    id->p_encoder->fmt_in.audio.i_format = AOUT_FMT_S16_NE;
+    es_format_Init( &id->p_encoder->fmt_in, AUDIO_ES, VLC_FOURCC('f','l','3','2') );
+    id->p_encoder->fmt_in.audio.i_format = VLC_FOURCC('f','l','3','2');
+
     id->p_encoder->fmt_in.audio.i_rate = id->p_decoder->fmt_out.audio.i_rate;
     id->p_encoder->fmt_in.audio.i_physical_channels =
         id->p_decoder->fmt_out.audio.i_physical_channels;