From f98c63e417d13dc5a30a1d2c2de550d8958f7b10 Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Date: Mon, 28 Apr 2025 11:31:49 +0200
Subject: [PATCH] avformat/apvdec: Fix seeking

pkt->pos pointed to the actual packet data, not to the start
of the access unit.

Reviewed-by: Mark Thompson <sw@jkqxz.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavformat/apvdec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavformat/apvdec.c b/libavformat/apvdec.c
index 300ee77316..d2c2a50629 100644
--- a/libavformat/apvdec.c
+++ b/libavformat/apvdec.c
@@ -227,6 +227,7 @@ static int apv_read_packet(AVFormatContext *s, AVPacket *pkt)
     ret = av_get_packet(s->pb, pkt, au_size);
     if (ret < 0)
         return ret;
+    pkt->pos  -= 4;
     pkt->flags = AV_PKT_FLAG_KEY;
 
     signature = AV_RB32(pkt->data);