From 0435cfa11ad4acdd9b01c73b242a6b372cdfc281 Mon Sep 17 00:00:00 2001
From: Dimitrii Lopanov <sexykdi@gmail.com>
Date: Fri, 26 Jun 2020 08:34:23 +0300
Subject: [PATCH] handle panic error on non-existing packet index (for audio,
 as example)

---
 format/ts/muxer.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/format/ts/muxer.go b/format/ts/muxer.go
index 4394975..7b6f365 100644
--- a/format/ts/muxer.go
+++ b/format/ts/muxer.go
@@ -154,6 +154,9 @@ func (self *Muxer) WriteHeader(streams []av.CodecData) (err error) {
 }
 
 func (self *Muxer) WritePacket(pkt av.Packet) (err error) {
+	if int(pkt.Idx) >= len(self.streams) {
+		return fmt.Errorf("Wrong stream index: %d", pkt.Idx)
+	}
 	stream := self.streams[pkt.Idx]
 	pkt.Time += time.Second