From 0b95e71aa046b77ad31bb8891b7b6aede6a722c7 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Wed, 17 Jan 2024 13:07:24 +0100
Subject: [PATCH] fftools/ffmpeg_opt: briefly mention stream specifier syntax
 in help output

---
 fftools/ffmpeg_opt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c
index 771599c96a..723f8814ee 100644
--- a/fftools/ffmpeg_opt.c
+++ b/fftools/ffmpeg_opt.c
@@ -1195,6 +1195,9 @@ void show_help_default(const char *opt, const char *arg)
            "    -h full -- print all options (including all format and codec specific options, very long)\n"
            "    -h type=name -- print all options for the named decoder/encoder/demuxer/muxer/filter/bsf/protocol\n"
            "    See man %s for detailed description of the options.\n"
+           "\n"
+           "Per-stream options can be followed by :<stream_spec> to apply that option to specific streams only. "
+           "<stream_spec> can be a stream index, or v/a/s for video/audio/subtitle (see manual for full syntax).\n"
            "\n", program_name);
 
     show_help_options(options, "Print help / information / capabilities:",