Merge pull request #208 from notpeter/master

Added ffmpeg, haxelib, Matt's Traceroute and imagemagick convert.

pages/common/HandBrakeCLI.md

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+# HandBrakeCLI
+
+> Video conversion tool
+
+- Convert a video file to MKV (AAC 160kbit audio and x264 CRF20 video)
+
+`HandBrakeCLI -i {{input.avi}} -o {{output.mkv}} -e x264 -q 20 -B 160`
+
+- Resize a video file to 320x240
+
+`HandBrakeCLI -i {{input.mp4}} -o {{output.mp4} -w 320 -l 240`
+
+- List available presets  
+
+`HandBrakeCLI --preset-list`
+
+- Convert an AVI video to MP4 using the Android preset
+
+`HandBrakeCLI --preset="Android" -i {{input.ext}} -o {{output.mp4}}` 

pages/common/MP4Box.md

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+# MP4Box
+
+> MPEG-4 Systems Toolbox - Muxes streams into MP4 container
+
+- Display information about an existing MP4 file
+
+`MP4Box -info {{filename}}`
+
+- Add an SRT subtitle file into an MP4 file 
+
+`MP4Box -add {{input-subs.srt}}:lang=eng -add {{input.mp4}} {{output.mp4}}`
+
+- Combine audio from one file and video from another
+
+`MP4Box -add {{input1.mp4}}#audio -add {{input2.mp4}}#video {{output.mp4}`
+

pages/common/convert.md

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+# convert
+
+> Imagemagick image conversion tool
+
+- Convert an image from JPG to PNG
+
+`convert {{image.jpg}} {{image.png}}`
+
+- Scale an image 50% it's original size 
+
+`convert {{image.png}} -resize 50% {{image2.png}}`
+
+- Horizontally append images    
+
+`convert {{image1.png}} {{image2.png}} {{image3.png}} +append {{image123.png}}`

pages/common/ffmpeg.md

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+# ffmpeg
+
+> Video conversion tool
+
+- Extract the sound from a video and save it as MP3
+
+`ffmpeg -i {{video-filename}} -vn -ar 44100 -ac 2 -ab 192 -f mp3 {{sound.mp3}}`
+
+- Convert frames from a video into individual numbered images 
+
+`ffmpeg -i {{video-filename}} {{image%d.png}}`
+
+- Combine numbered images (image1.jpg, image2.jpg, etc) into a video
+
+`ffmpeg -f image2 -i {{image%d.jpg}} {{video.mpg}}`
+
+- Convert AVI video to MP4. AAC Audio @ 128kbit, Video @ 1250Kbit
+
+`ffmpeg -i {{in.avi}} -acodec libfaac -ab 128k -vcodec mpeg4 -b 1250K {{out.mp4}}`

pages/common/haxelib.md

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+# haxelib
+
+> Haxe Library Manager
+
+- Search for a Haxe library
+
+`haxelib search {{keyword}}`
+
+- Install a Haxe library
+
+`haxelib install {{libname}}`
+
+- Upgrade all installed Haxe libraries  
+
+`haxelib upgrade`
+
+- Install the development version of a library from a Git repository
+
+`haxelib git {{libname}} {{GIT-URL}}`

pages/common/mtr.md

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+# mtr
+
+> Combined traceroute and ping tool
+
+- Traceroute to a host and continuously ping all intermediary hops
+
+`mtr {{host}}`
+
+- Disable IP address and host name mapping
+
+`mtr -n {{host}}`
+
+- Generate output after pinging each hop 10 times  
+
+`mtr -w {{host}}`
+
+- Force IP IPv4 or IPV6
+
+`mtr -4 {{host}}`