From 7053c6f1beab24d27dc3f9c7445d0856ce4ab03c Mon Sep 17 00:00:00 2001
From: Martin Chrzanowski <martin@celo.org>
Date: Sat, 12 Jan 2019 19:24:46 -0500
Subject: Add ffmpeg rotate

---
 ffmpeg.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/ffmpeg.md b/ffmpeg.md
index 28a5730..663471e 100644
--- a/ffmpeg.md
+++ b/ffmpeg.md
@@ -11,6 +11,20 @@
     # -1 means to automatically preserve aspect ratio
     ffmpeg -i in.mp4 -filter:v scale=720:-1 out.mp4
 
+## Rotate
+
+    # 90 degrees clockwise
+    ffmpeg -i in.mov -vf "transpose=1" out.mov
+    # 180 degrees
+    ffmpeg -vf "transpose=2,transpose=2"
+
+For the transpose parameter you can pass:
+
+    0 = 90CounterCLockwise and Vertical Flip (default)
+    1 = 90Clockwise
+    2 = 90CounterClockwise
+    3 = 90Clockwise and Vertical Flip
+
 ## Record screen
 
     ffmpeg -f x11grab -s 1920x1080 -i :0.0 out.mkv
-- 
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