From b48fb6c86c671f9bbb8b65e4025a0aa111cde681 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kacper=20Michaj=C5=82ow?= <kasper93@gmail.com>
Date: Sun, 5 Jul 2026 16:12:40 +0200
Subject: [PATCH] demux_lavf: seek avfc only on seekable streams in
 drop_buffers

Disc streams are only seekable through the higher-level stream
controls, a byte seek on the slave can only fail and log errors.
avformat_flush() below already resets the demuxer state.
---
 demux/demux_lavf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/demux/demux_lavf.c b/demux/demux_lavf.c
index a1ccf20cc2..ce20fcf1cc 100644
--- a/demux/demux_lavf.c
+++ b/demux/demux_lavf.c
@@ -1800,7 +1800,8 @@ static void reset_dovi_split_state(demuxer_t *demuxer)
 static void demux_drop_buffers_lavf(demuxer_t *demuxer)
 {
     lavf_priv_t *priv = demuxer->priv;
-    av_seek_frame(priv->avfc, -1, 0, 1);
+    if (!priv->stream || priv->stream->seekable)
+        av_seek_frame(priv->avfc, -1, 0, 1);
     demux_flush(demuxer);
     stream_drop_buffers(priv->stream);
     avio_flush(priv->avfc->pb);