From 2b787ef766941a7565ac143f52d2f5954b9db6e9 Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Date: Sat, 28 Aug 2021 12:51:14 +0200
Subject: [PATCH] avformat/dv: Set AVFMTCTX_NOHEADER flag

Audio streams are only added when a packet is read.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavformat/dv.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavformat/dv.c b/libavformat/dv.c
index 4d27c95d98..77a6ede37b 100644
--- a/libavformat/dv.c
+++ b/libavformat/dv.c
@@ -345,6 +345,9 @@ static int dv_init_demux(AVFormatContext *s, DVDemuxContext *c)
     c->vst->codecpar->bit_rate   = 25000000;
     c->vst->start_time        = 0;
 
+    /* Audio streams are added later as they are encountered. */
+    s->ctx_flags |= AVFMTCTX_NOHEADER;
+
     return 0;
 }