From 20d381d1e98844146ffda3e9b9b6b812af95e397 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Fri, 24 Aug 2018 12:55:10 +0200
Subject: demux_lavf: v4l streams are not seekable

FFmpeg is retarded enough not to give us any indication whether it is
(unless we query fields not in the ABI/API). I bet FFmpeg developers
love it when library users have to litter their code with duplicated
information.
---
 demux/demux_lavf.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/demux/demux_lavf.c b/demux/demux_lavf.c
index 01f99ae6fa..54c144bcc1 100644
--- a/demux/demux_lavf.c
+++ b/demux/demux_lavf.c
@@ -162,6 +162,8 @@ static const struct format_hack format_hacks[] = {
     {"mp4", .skipinfo = true, .fix_editlists = true},
     {"matroska", .skipinfo = true},
 
+    {"v4l2", .no_seek = true},
+
     // In theory, such streams might contain timestamps, but virtually none do.
     {"h264", .if_flags = AVFMT_NOTIMESTAMPS },
     {"hevc", .if_flags = AVFMT_NOTIMESTAMPS },
-- 
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