avformat/sox*: extend long name

libavformat/soxdec.c

@@ -133,7 +133,7 @@ static int sox_read_header(AVFormatContext *s)
 
 const AVInputFormat ff_sox_demuxer = {
     .name           = "sox",
-    .long_name      = NULL_IF_CONFIG_SMALL("SoX native"),
+    .long_name      = NULL_IF_CONFIG_SMALL("SoX (Sound eXchange) native"),
     .read_probe     = sox_probe,
     .read_header    = sox_read_header,
     .read_packet    = ff_pcm_read_packet,

libavformat/soxenc.c

@@ -107,7 +107,7 @@ static int sox_write_trailer(AVFormatContext *s)
 
 const FFOutputFormat ff_sox_muxer = {
     .p.name            = "sox",
-    .p.long_name       = NULL_IF_CONFIG_SMALL("SoX native"),
+    .p.long_name       = NULL_IF_CONFIG_SMALL("SoX (Sound eXchange) native"),
     .p.extensions      = "sox",
     .priv_data_size    = sizeof(SoXContext),
     .p.audio_codec     = AV_CODEC_ID_PCM_S32LE,