diff --git a/daemon/redis.c b/daemon/redis.c
index 0656563fd..c720f5e04 100644
--- a/daemon/redis.c
+++ b/daemon/redis.c
@@ -2736,10 +2736,12 @@ static str redis_encode_json(ng_parser_ctx_t *ctx, call_t *c, void **to_free) {
 			inner = parser->dict_add_list_dup(root, tmp);
 			for (__auto_type m = media->codecs.codec_prefs.head; m; m = m->next) {
 				rtp_payload_type *pt = m->data;
-				JSON_ADD_LIST_STRING("%u/" STR_FORMAT "/%u/" STR_FORMAT "/" STR_FORMAT "/%i/%i",
+				JSON_ADD_LIST_STRING("%u/" STR_FORMAT "/%u/" STR_FORMAT "/%i/%i/"
+							STR_FORMAT "/" STR_FORMAT,
 						pt->payload_type, STR_FMT(&pt->encoding),
 						pt->clock_rate, STR_FMT(&pt->encoding_parameters),
-						STR_FMT(&pt->format_parameters), pt->bitrate, pt->ptime);
+						pt->bitrate, pt->ptime, STR_FMT(&pt->format_parameters),
+						STR_FMT(&pt->codec_opts));
 			}
 		} // --- for medias.head
 
diff --git a/t/auto-daemon-tests-redis-json.pl b/t/auto-daemon-tests-redis-json.pl
index b957e6867..7dcf80ed2 100755
--- a/t/auto-daemon-tests-redis-json.pl
+++ b/t/auto-daemon-tests-redis-json.pl
@@ -172,12 +172,12 @@ $json_exp = {
 		  '0'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20',
-			 '8/PCMA/8000///0/20'
+			 '0/PCMU/8000//0/20//',
+			 '8/PCMA/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '0/PCMU/8000///0/20',
-			 '8/PCMA/8000///0/20'
+			 '0/PCMU/8000//0/20//',
+			 '8/PCMA/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
@@ -432,10 +432,10 @@ $json_exp = {
 		  '0'
 		],
   'payload_types-0' => [
-			 '8/PCMA/8000///0/20'
+			 '8/PCMA/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '8/PCMA/8000///0/20'
+			 '8/PCMA/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
@@ -697,12 +697,12 @@ $json_exp = {
 		  '0'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20',
-			 '8/PCMA/8000///0/20'
+			 '0/PCMU/8000//0/20//',
+			 '8/PCMA/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '0/PCMU/8000///0/20',
-			 '8/PCMA/8000///0/20'
+			 '0/PCMU/8000//0/20//',
+			 '8/PCMA/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
@@ -958,12 +958,12 @@ $json_exp = {
 		  '0'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20',
-			 '8/PCMA/8000///0/20'
+			 '0/PCMU/8000//0/20//',
+			 '8/PCMA/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '0/PCMU/8000///0/20',
-			 '8/PCMA/8000///0/20'
+			 '0/PCMU/8000//0/20//',
+			 '8/PCMA/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
@@ -1277,20 +1277,20 @@ $json_exp = {
                           '3'
                         ],
           'payload_types-0' => [
-                                 '0/PCMU/8000///0/20',
-                                 '8/PCMA/8000///0/20'
+                                 '0/PCMU/8000//0/20//',
+                                 '8/PCMA/8000//0/20//'
                                ],
           'payload_types-1' => [
-                                 '0/PCMU/8000///0/20',
-                                 '8/PCMA/8000///0/20'
+                                 '0/PCMU/8000//0/20//',
+                                 '8/PCMA/8000//0/20//'
                                ],
           'payload_types-2' => [
-                                 '0/PCMU/8000///0/20',
-                                 '8/PCMA/8000///0/20'
+                                 '0/PCMU/8000//0/20//',
+                                 '8/PCMA/8000//0/20//'
                                ],
           'payload_types-3' => [
-                                 '0/PCMU/8000///0/20',
-                                 '8/PCMA/8000///0/20'
+                                 '0/PCMU/8000//0/20//',
+                                 '8/PCMA/8000//0/20//'
                                ],
           'rtcp_sinks-0' => [],
           'rtcp_sinks-1' => [
@@ -1596,9 +1596,9 @@ $json_exp->{'media-2'}{format_str} = '8';
 $json_exp->{'media-2'}{media_flags} = '2162692';
 $json_exp->{'media-3'}{format_str} = '8';
 $json_exp->{'media-3'}{media_flags} = '2162692';
-$json_exp->{'payload_types-2'}[0] = '8/PCMA/8000///0/20';
+$json_exp->{'payload_types-2'}[0] = '8/PCMA/8000//0/20//';
 $#{$json_exp->{'payload_types-2'}} = 0;
-$json_exp->{'payload_types-3'}[0] = '8/PCMA/8000///0/20';
+$json_exp->{'payload_types-3'}[0] = '8/PCMA/8000//0/20//';
 $#{$json_exp->{'payload_types-3'}} = 0;
 $json_exp->{'stream-1'}{ps_flags} = '1179649';
 $json_exp->{'stream-3'}{ps_flags} = '1179649';
@@ -1687,7 +1687,7 @@ $json_exp = {
 		  '0'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [],
@@ -1860,10 +1860,10 @@ $json_exp = {
 		  '1'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
@@ -2101,10 +2101,10 @@ $json_exp = {
 		  '1'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
@@ -2370,13 +2370,13 @@ $json_exp = {
 		  '2'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'payload_types-2' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
diff --git a/t/auto-daemon-tests-redis.pl b/t/auto-daemon-tests-redis.pl
index 19cc31f5e..7db14a34c 100755
--- a/t/auto-daemon-tests-redis.pl
+++ b/t/auto-daemon-tests-redis.pl
@@ -171,12 +171,12 @@ $json_exp = {
 		  '0'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20',
-			 '8/PCMA/8000///0/20'
+			 '0/PCMU/8000//0/20//',
+			 '8/PCMA/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '0/PCMU/8000///0/20',
-			 '8/PCMA/8000///0/20'
+			 '0/PCMU/8000//0/20//',
+			 '8/PCMA/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
@@ -433,10 +433,10 @@ $json_exp = {
 		  '0'
 		],
   'payload_types-0' => [
-			 '8/PCMA/8000///0/20'
+			 '8/PCMA/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '8/PCMA/8000///0/20'
+			 '8/PCMA/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
@@ -698,10 +698,10 @@ $json_exp = {
 		  '0'
 		],
   'payload_types-0' => [
-			 '8/PCMA/8000///0/20'
+			 '8/PCMA/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '8/PCMA/8000///0/20'
+			 '8/PCMA/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
@@ -963,12 +963,12 @@ $json_exp = {
 		  '0'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20',
-			 '8/PCMA/8000///0/20'
+			 '0/PCMU/8000//0/20//',
+			 '8/PCMA/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '0/PCMU/8000///0/20',
-			 '8/PCMA/8000///0/20'
+			 '0/PCMU/8000//0/20//',
+			 '8/PCMA/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
@@ -1224,12 +1224,12 @@ $json_exp = {
 		  '0'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20',
-			 '8/PCMA/8000///0/20'
+			 '0/PCMU/8000//0/20//',
+			 '8/PCMA/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '0/PCMU/8000///0/20',
-			 '8/PCMA/8000///0/20'
+			 '0/PCMU/8000//0/20//',
+			 '8/PCMA/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
@@ -1543,20 +1543,20 @@ $json_exp = {
                           '3'
                         ],
           'payload_types-0' => [
-                                 '0/PCMU/8000///0/20',
-                                 '8/PCMA/8000///0/20'
+                                 '0/PCMU/8000//0/20//',
+                                 '8/PCMA/8000//0/20//'
                                ],
           'payload_types-1' => [
-                                 '0/PCMU/8000///0/20',
-                                 '8/PCMA/8000///0/20'
+                                 '0/PCMU/8000//0/20//',
+                                 '8/PCMA/8000//0/20//'
                                ],
           'payload_types-2' => [
-                                 '0/PCMU/8000///0/20',
-                                 '8/PCMA/8000///0/20'
+                                 '0/PCMU/8000//0/20//',
+                                 '8/PCMA/8000//0/20//'
                                ],
           'payload_types-3' => [
-                                 '0/PCMU/8000///0/20',
-                                 '8/PCMA/8000///0/20'
+                                 '0/PCMU/8000//0/20//',
+                                 '8/PCMA/8000//0/20//'
                                ],
           'rtcp_sinks-0' => [],
           'rtcp_sinks-1' => [
@@ -1862,9 +1862,9 @@ $json_exp->{'media-2'}{format_str} = '8';
 $json_exp->{'media-2'}{media_flags} = '2162692';
 $json_exp->{'media-3'}{format_str} = '8';
 $json_exp->{'media-3'}{media_flags} = '2162692';
-$json_exp->{'payload_types-2'}[0] = '8/PCMA/8000///0/20';
+$json_exp->{'payload_types-2'}[0] = '8/PCMA/8000//0/20//';
 $#{$json_exp->{'payload_types-2'}} = 0;
-$json_exp->{'payload_types-3'}[0] = '8/PCMA/8000///0/20';
+$json_exp->{'payload_types-3'}[0] = '8/PCMA/8000//0/20//';
 $#{$json_exp->{'payload_types-3'}} = 0;
 $json_exp->{'stream-1'}{ps_flags} = '1179649';
 $json_exp->{'stream-3'}{ps_flags} = '1179649';
@@ -1952,7 +1952,7 @@ $json_exp = {
 		  '0'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [],
@@ -2125,10 +2125,10 @@ $json_exp = {
 		  '1'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
@@ -2366,10 +2366,10 @@ $json_exp = {
 		  '1'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [
@@ -2635,13 +2635,13 @@ $json_exp = {
 		  '2'
 		],
   'payload_types-0' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'payload_types-1' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'payload_types-2' => [
-			 '0/PCMU/8000///0/20'
+			 '0/PCMU/8000//0/20//'
 		       ],
   'rtcp_sinks-0' => [],
   'rtcp_sinks-1' => [