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diff --git a/ffmpeg.md b/ffmpeg.md
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--- a/ffmpeg.md
+++ b/ffmpeg.md
@@ -24,6 +24,14 @@ Works for audio, too.
 * `-b:a 192k`: specify audio bitrate to 192 kbps
 * `-b:v 2M`: specify video bitrate to 2 mbps
 
+### Encoding
+
+H.265 is one of the top recommended formats, for size:quality ratio.
+
+    ffmpeg -i in.mp4 -vcodec libx265 -crf <value> out.mp4
+
+Reasonable `crf` values could be 24 to 30.
+
 ## Audio/video delay
 
     ffmpeg -i "$input" -itsoffset <offset in seconds> -i "$input" -map 1:v -map 0:a -c:a copy -c:v libx264 "$output"