From 9ae73d0644cde27d3d93d41a5d8bc94de853ea91 Mon Sep 17 00:00:00 2001
From: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Date: Sun, 5 Apr 2015 14:28:38 -0400
Subject: [PATCH] hlsenc: Only write PAT/PMT once per segment
This saves a lot of muxing overhead, especially on lower bitrate
segments.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
---
libavformat/hlsenc.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
index 8daf53f8bb..d7884e5c40 100644
--- a/libavformat/hlsenc.c
+++ b/libavformat/hlsenc.c
@@ -560,8 +560,16 @@ static int hls_start(AVFormatContext *s)
}
av_dict_free(&options);
- if (oc->oformat->priv_class && oc->priv_data)
+ /* We only require one PAT/PMT per segment. */
+ if (oc->oformat->priv_class && oc->priv_data) {
+ char period[21];
+
+ snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
+
av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
+ av_opt_set(oc->priv_data, "sdt_period", period, 0);
+ av_opt_set(oc->priv_data, "pat_period", period, 0);
+ }
if (c->vtt_basename)
avformat_write_header(vtt_oc,NULL);