import recipes: todo add to site

todo-recipes/ffmpeg.md

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+# ffmpeg
+
+Everyone's favourite impossible-to-use tool
+
+Coordinates are counted from the top left corner like so:
+
+```
+0- +x
+|
++y
+```
+
+## Add text
+
+This puts the text in a transparent box with opacity 0.25.
+
+```
+ffmpeg -i input.mp4 -vf drawtext="fontfile=/usr/share/fonts/adobe-source-sans-pro/SourceSansPro-Regular.otf: text='THE TEXT': fontcolor=white: fontsize=250: box=1: boxcolor=black@0.25: boxborderw=5: x=(w-text_w)/2: y=(h-550)" -codec:a copy output.mp4
+```
+
+## Download a m3u8 playlist
+
+```
+ffmpeg -protocol_whitelist file,http,https,tcp,tls,crypto -i 'https://host/playlist.m3u8' -c copy video.mp4
+```