diff --git a/audio/fmt-conversion.c b/audio/fmt-conversion.c
index e1c35bba2a..d72a50d2e6 100644
--- a/audio/fmt-conversion.c
+++ b/audio/fmt-conversion.c
@@ -27,12 +27,14 @@ static const struct {
     {AV_SAMPLE_FMT_U8,    AF_FORMAT_U8},
     {AV_SAMPLE_FMT_S16,   AF_FORMAT_S16},
     {AV_SAMPLE_FMT_S32,   AF_FORMAT_S32},
+    {AV_SAMPLE_FMT_S64,   AF_FORMAT_S64},
     {AV_SAMPLE_FMT_FLT,   AF_FORMAT_FLOAT},
     {AV_SAMPLE_FMT_DBL,   AF_FORMAT_DOUBLE},
 
     {AV_SAMPLE_FMT_U8P,   AF_FORMAT_U8P},
     {AV_SAMPLE_FMT_S16P,  AF_FORMAT_S16P},
     {AV_SAMPLE_FMT_S32P,  AF_FORMAT_S32P},
+    {AV_SAMPLE_FMT_S64P,  AF_FORMAT_S64P},
     {AV_SAMPLE_FMT_FLTP,  AF_FORMAT_FLOATP},
     {AV_SAMPLE_FMT_DBLP,  AF_FORMAT_DOUBLEP},
 
diff --git a/audio/format.c b/audio/format.c
index f56546a207..30bc5ee446 100644
--- a/audio/format.c
+++ b/audio/format.c
@@ -29,6 +29,7 @@ int af_fmt_to_bytes(int format)
     case AF_FORMAT_U8:      return 1;
     case AF_FORMAT_S16:     return 2;
     case AF_FORMAT_S32:     return 4;
+    case AF_FORMAT_S64:     return 4;
     case AF_FORMAT_FLOAT:   return 4;
     case AF_FORMAT_DOUBLE:  return 8;
     }
@@ -69,6 +70,7 @@ static const int planar_formats[][2] = {
     {AF_FORMAT_U8P,     AF_FORMAT_U8},
     {AF_FORMAT_S16P,    AF_FORMAT_S16},
     {AF_FORMAT_S32P,    AF_FORMAT_S32},
+    {AF_FORMAT_S64P,    AF_FORMAT_S64},
     {AF_FORMAT_FLOATP,  AF_FORMAT_FLOAT},
     {AF_FORMAT_DOUBLEP, AF_FORMAT_DOUBLE},
 };
@@ -117,11 +119,13 @@ const char *af_fmt_to_str(int format)
     case AF_FORMAT_U8:          return "u8";
     case AF_FORMAT_S16:         return "s16";
     case AF_FORMAT_S32:         return "s32";
+    case AF_FORMAT_S64:         return "s64";
     case AF_FORMAT_FLOAT:       return "float";
     case AF_FORMAT_DOUBLE:      return "double";
     case AF_FORMAT_U8P:         return "u8p";
     case AF_FORMAT_S16P:        return "s16p";
     case AF_FORMAT_S32P:        return "s32p";
+    case AF_FORMAT_S64P:        return "s64p";
     case AF_FORMAT_FLOATP:      return "floatp";
     case AF_FORMAT_DOUBLEP:     return "doublep";
     case AF_FORMAT_S_AAC:       return "spdif-aac";
diff --git a/audio/format.h b/audio/format.h
index 24e1c5404f..bdd4744ae3 100644
--- a/audio/format.h
+++ b/audio/format.h
@@ -27,6 +27,7 @@ enum af_format {
     AF_FORMAT_U8,
     AF_FORMAT_S16,
     AF_FORMAT_S32,
+    AF_FORMAT_S64,
     AF_FORMAT_FLOAT,
     AF_FORMAT_DOUBLE,
 
@@ -34,6 +35,7 @@ enum af_format {
     AF_FORMAT_U8P,
     AF_FORMAT_S16P,
     AF_FORMAT_S32P,
+    AF_FORMAT_S64P,
     AF_FORMAT_FLOATP,
     AF_FORMAT_DOUBLEP,