From 0a68117435c2c7a2de42a6c8a592ea566409309a Mon Sep 17 00:00:00 2001
From: Allen Porter <allen@thebends.org>
Date: Mon, 21 Feb 2022 14:29:52 -0800
Subject: [PATCH] Crash fix: don't write packets for uninitialized HLS segments

Add a check to avoid writing to an uninitialized HLS segment.
---
 hlsMuxer.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hlsMuxer.go b/hlsMuxer.go
index f4cde85..e90b8bc 100644
--- a/hlsMuxer.go
+++ b/hlsMuxer.go
@@ -48,6 +48,11 @@ func (element *MuxerHLS) WritePacket(packet *av.Packet) {
 	element.mutex.Lock()
 	defer element.mutex.Unlock()
 	//TODO delete packet.IsKeyFrame if need no EXT-X-INDEPENDENT-SEGMENTS
+
+	if !packet.IsKeyFrame && element.CurrentSegment == nil {
+		// Wait for the first keyframe before initializing
+		return
+	}
 	if packet.IsKeyFrame && (element.CurrentSegment == nil || element.CurrentSegment.GetDuration().Seconds() >= 4) {
 		if element.CurrentSegment != nil {
 			element.CurrentSegment.Close()