From a709bdd16b363fcb704961a26e54e11d5d103241 Mon Sep 17 00:00:00 2001
From: Andreas Fankhauser hiddenalpha.ch
Date: Fri, 3 Nov 2023 23:52:44 +0100
Subject: Add doc how to ffmpeg concat

---
 doc/note/ffmpeg/ffmpeg.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/doc/note/ffmpeg/ffmpeg.txt b/doc/note/ffmpeg/ffmpeg.txt
index 072faa7..2b18a44 100644
--- a/doc/note/ffmpeg/ffmpeg.txt
+++ b/doc/note/ffmpeg/ffmpeg.txt
@@ -45,6 +45,13 @@ Use  -codec:v copy  to keep video, or -codec:v no  for audio-only.
   -i INFILE -ss <pos> -to <pos> OUTFILE
 
 
+## Concatenate
+
+  && ffmpeg -i one.mkv -i two.mkv \
+       -filter_complex '[0:v] [0:a] [1:v] [1:a] concat=n=2:v=1:a=1 [v] [a]' \
+       -map "[v]" -map "[a]" out.mkv \
+
+
 ## Rotate Portrait
 
   -i INFILE -vf "transpose=2" OUTFILE
-- 
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