--- a/ffmpeg.rst	Sun Jun 28 14:49:46 2020 +0300
+++ b/ffmpeg.rst	Sun Jun 28 14:54:04 2020 +0300
@@ -28,6 +28,13 @@
 
   ffmpeg -pix_fmts
 
+Probe file
+==========
+::
+
+   mediainfo $FILE
+   ffprobe $FILE
+
 Limiting bit rate
 =================
 
@@ -54,3 +61,12 @@
 =====
 
 https://trac.ffmpeg.org/wiki/Encode/H.264
+
+Adding a logo to a video
+========================
+
+::
+
+  ffmpeg -i in.mp4 -i logo.png out.mp4
+  ffmpeg -i in.mp4 -i logo.png -filter_complex "overlay=x=10:y=20" out.mp4
+