Fix --sout-ffmpeg-codec

Signed-off-by: Rafaël Carré <funman@videolan.org>
(cherry picked from commit 01985075)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/codec/avcodec/encoder.c

@@ -203,6 +203,8 @@ int OpenEncoder( vlc_object_t *p_this )
     char *psz_val;
     int i_val;
 
+    config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
+
     if( p_enc->fmt_out.i_codec == VLC_CODEC_MP3 )
     {
         i_cat = AUDIO_ES;
@@ -335,8 +337,6 @@ int OpenEncoder( vlc_object_t *p_this )
         p_context->dsp_mask |= AV_CPU_FLAG_SSE2;
     }
 
-    config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
-
     p_sys->i_key_int = var_GetInteger( p_enc, ENC_CFG_PREFIX "keyint" );
     p_sys->i_b_frames = var_GetInteger( p_enc, ENC_CFG_PREFIX "bframes" );
     p_sys->i_vtolerance = var_GetInteger( p_enc, ENC_CFG_PREFIX "vt" ) * 1000;