diff --git a/doc/muxers.texi b/doc/muxers.texi
index e5b8debcb3..cf1c9a8622 100644
--- a/doc/muxers.texi
+++ b/doc/muxers.texi
@@ -640,6 +640,9 @@ Set the starting sequence numbers according to @var{start_number} option value.
 @item epoch
 The start number will be the seconds since epoch (1970-01-01 00:00:00)
 
+@item epoch_us
+The start number will be the microseconds since epoch (1970-01-01 00:00:00)
+
 @item datetime
 The start number will be based on the current date/time as YYYYmmddHHMMSS. e.g. 20161231235759.
 
diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
index d75684741f..008a3f3947 100644
--- a/libavformat/hlsenc.c
+++ b/libavformat/hlsenc.c
@@ -41,6 +41,7 @@
 #include "libavutil/random_seed.h"
 #include "libavutil/opt.h"
 #include "libavutil/log.h"
+#include "libavutil/time.h"
 #include "libavutil/time_internal.h"
 
 #include "avformat.h"
@@ -56,6 +57,8 @@ typedef enum {
     HLS_START_SEQUENCE_AS_START_NUMBER = 0,
     HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1,
     HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2,  // YYYYMMDDhhmmss
+    HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH = 3,
+    HLS_START_SEQUENCE_LAST, // unused
 } StartSequenceSourceType;
 
 typedef enum {
@@ -2788,9 +2791,12 @@ static int hls_init(AVFormatContext *s)
         pattern = "%d.m4s";
     }
     if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
+        (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) ||
         (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
-        time_t t = time(NULL); // we will need it in either case
-        if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
+        time_t t = time(NULL);
+        if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) {
+            hls->start_sequence = av_gettime();
+        } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
             hls->start_sequence = (int64_t)t;
         } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
             char b[15];
@@ -3083,9 +3089,10 @@ static const AVOption options[] = {
     {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
     {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
     {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL},  0, 0,    E},
-    {"hls_start_number_source", "set source of first number in sequence", OFFSET(start_sequence_source_type), AV_OPT_TYPE_INT, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, 0, HLS_START_SEQUENCE_AS_FORMATTED_DATETIME, E, "start_sequence_source_type" },
+    {"hls_start_number_source", "set source of first number in sequence", OFFSET(start_sequence_source_type), AV_OPT_TYPE_INT, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, 0, HLS_START_SEQUENCE_LAST-1, E, "start_sequence_source_type" },
     {"generic", "start_number value (default)", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
     {"epoch", "seconds since epoch", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
+    {"epoch_us", "microseconds since epoch", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
     {"datetime", "current datetime as YYYYMMDDhhmmss", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_FORMATTED_DATETIME }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
     {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL},  0, 0,    E},
     {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL},  0, 0,    E},
diff --git a/libavformat/version.h b/libavformat/version.h
index 18c2f5fec2..719cda6b98 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -33,7 +33,7 @@
 // Also please add any ticket numbers that you believe might be affected here
 #define LIBAVFORMAT_VERSION_MAJOR  58
 #define LIBAVFORMAT_VERSION_MINOR  42
-#define LIBAVFORMAT_VERSION_MICRO 100
+#define LIBAVFORMAT_VERSION_MICRO 101
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
                                                LIBAVFORMAT_VERSION_MINOR, \
