@@ -165,6 +165,7 @@ struct variant {

 };

 typedef struct HLSContext {

+    AVClass *class;

     int n_variants;

     struct variant **variants;

     int n_playlists;

@@ -173,6 +174,7 @@ typedef struct HLSContext {

     struct rendition **renditions;

     int cur_seq_no;

+    int live_start_index;

     int first_packet;

     int64_t first_timestamp;

     int64_t cur_timestamp;

@@ -1237,10 +1239,12 @@ static int select_cur_seq_no(HLSContext *c, struct playlist *pls)

              * require us to download a segment to inspect its timestamps. */

             return c->cur_seq_no;

-        /* If this is a live stream with more than 3 segments, start at the

-         * third last segment. */

-        if (pls->n_segments > 3)

-            return pls->start_seq_no + pls->n_segments - 3;

+        /* If this is a live stream, start live_start_index segments from the

+         * start or end */

+        if (c->live_start_index < 0)

+            return pls->start_seq_no + FFMAX(pls->n_segments + c->live_start_index, 0);

+        else

+            return pls->start_seq_no + FFMIN(c->live_start_index, pls->n_segments - 1);

     }

     /* Otherwise just start on the first segment. */

@@ -1714,9 +1718,25 @@ static int hls_probe(AVProbeData *p)

     return 0;

 }

+#define OFFSET(x) offsetof(HLSContext, x)

+#define FLAGS AV_OPT_FLAG_DECODING_PARAM

+static const AVOption hls_options[] = {

+    {"live_start_index", "segment index to start live streams at (negative values are from the end)",

+        OFFSET(live_start_index), FF_OPT_TYPE_INT, {.i64 = -3}, INT_MIN, INT_MAX, FLAGS},

+    {NULL}

+};

+

+static const AVClass hls_class = {

+    .class_name = "hls,applehttp",

+    .item_name  = av_default_item_name,

+    .option     = hls_options,

+    .version    = LIBAVUTIL_VERSION_INT,

+};

+

 AVInputFormat ff_hls_demuxer = {

     .name           = "hls,applehttp",

     .long_name      = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),

+    .priv_class     = &hls_class,

     .priv_data_size = sizeof(HLSContext),

     .read_probe     = hls_probe,

     .read_header    = hls_read_header,