diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
index 39ff1fa1e7..cb31d6aed7 100644
--- a/libavformat/hlsenc.c
+++ b/libavformat/hlsenc.c
@@ -69,6 +69,7 @@ typedef enum {
 #define KEYSIZE 16
 #define LINE_BUFFER_SIZE MAX_URL_SIZE
 #define HLS_MICROSECOND_UNIT   1000000
+#define BUFSIZE (16 * 1024)
 #define POSTFIX_PATTERN "_%d"
 
 typedef struct HLSSegment {
@@ -119,6 +120,7 @@ typedef struct VariantStream {
     ff_const59 AVOutputFormat *oformat;
     ff_const59 AVOutputFormat *vtt_oformat;
     AVIOContext *out;
+    AVIOContext *out_single_file;
     int packets_written;
     int init_range_length;
     uint8_t *temp_buffer;
@@ -149,6 +151,7 @@ typedef struct VariantStream {
     HLSSegment *last_segment;
     HLSSegment *old_segments;
 
+    char *basename_tmp;
     char *basename;
     char *vtt_basename;
     char *vtt_m3u8_name;
@@ -1722,12 +1725,34 @@ static int hls_start(AVFormatContext *s, VariantStream *vs)
             av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
         }
         if (c->flags & HLS_SINGLE_FILE) {
+            if (c->key_info_file || c->encrypt) {
+                av_dict_set(&options, "encryption_key", vs->key_string, 0);
+                av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
+
+                /* Write temp file with cryption content */
+                av_freep(&vs->basename_tmp);
+                vs->basename_tmp = av_asprintf("crypto:%s.tmp", oc->url);
+
+                /* append temp file content into single file */
+                av_freep(&vs->basename);
+                vs->basename = av_asprintf("%s", oc->url);
+            } else {
+                vs->basename_tmp = vs->basename;
+            }
             set_http_options(s, &options, c);
-            if ((err = hlsenc_io_open(s, &vs->out, oc->url, &options)) < 0) {
+            if (!vs->out_single_file)
+                if ((err = hlsenc_io_open(s, &vs->out_single_file, vs->basename, &options)) < 0) {
+                    if (c->ignore_io_errors)
+                        err = 0;
+                    goto fail;
+                }
+
+            if ((err = hlsenc_io_open(s, &vs->out, vs->basename_tmp, &options)) < 0) {
                 if (c->ignore_io_errors)
                     err = 0;
                 goto fail;
             }
+
         }
     }
     if (vs->vtt_basename) {
@@ -2258,6 +2283,38 @@ static int hls_init_file_resend(AVFormatContext *s, VariantStream *vs)
     return ret;
 }
 
+static int64_t append_single_file(AVFormatContext *s, VariantStream *vs)
+{
+    int ret = 0;
+    int64_t read_byte = 0;
+    int64_t total_size = 0;
+    char *filename = NULL;
+    char buf[BUFSIZE];
+    AVFormatContext *oc = vs->avf;
+
+    hlsenc_io_close(s, &vs->out, vs->basename_tmp);
+    filename = av_asprintf("%s.tmp", oc->url);
+    ret = s->io_open(s, &vs->out, filename, AVIO_FLAG_READ, NULL);
+    if (ret < 0) {
+        av_free(filename);
+        return ret;
+    }
+
+    do {
+        memset(buf, 0, sizeof(BUFSIZE));
+        read_byte = avio_read(vs->out, buf, BUFSIZE);
+        avio_write(vs->out_single_file, buf, read_byte);
+        if (read_byte > 0) {
+            total_size += read_byte;
+            ret = total_size;
+        }
+    } while (read_byte > 0);
+
+    hlsenc_io_close(s, &vs->out, filename);
+    av_free(filename);
+
+    return ret;
+}
 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
 {
     HLSContext *hls = s->priv_data;
@@ -2383,6 +2440,8 @@ static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
                 return ret;
             }
             vs->size = range_length;
+            if (hls->key_info_file || hls->encrypt)
+                vs->size = append_single_file(s, vs);
         } else {
             if (oc->url[0]) {
                 proto = avio_find_protocol_name(oc->url);
@@ -2484,6 +2543,8 @@ static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
 
         if (hls->flags & HLS_SINGLE_FILE) {
             vs->start_pos += vs->size;
+            if (hls->key_info_file || hls->encrypt)
+                ret = hls_start(s, vs);
         } else if (hls->max_seg_size > 0) {
             if (vs->size + vs->start_pos >= hls->max_seg_size) {
                 vs->sequence++;
@@ -2644,7 +2705,12 @@ static int hls_write_trailer(struct AVFormatContext *s)
             if (ret < 0)
                 av_log(s, AV_LOG_WARNING, "Failed to upload file '%s' at the end.\n", oc->url);
         }
-
+        if (hls->flags & HLS_SINGLE_FILE) {
+            if (hls->key_info_file || hls->encrypt) {
+                vs->size = append_single_file(s, vs);
+            }
+            hlsenc_io_close(s, &vs->out_single_file, vs->basename);
+        }
 failed:
         av_freep(&vs->temp_buffer);
         av_dict_free(&options);