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+# Generating music based on video
+  * mp3 and add audio-ducking (potentially covered by iMovie)
+  * midi generation (tough algorithmically, maybe more of an april project or entire thesis)
+  * very hard, high likelihood of bad-sounding music
+  
+* get a movie, get frames from the movie
+  * number of attribute variables from video
+
+  * (maybe just analyze images?)
+  * build music from images
+
+# options:
+## build movie image thing, do music later
+
+* Use EchoNest API to chop up songs into bars and allow users to mix and match, creating a new remixed song.  Pick n' Mixer
+
+** Pros -- potentially fun to play with. Musically oriented
+** Cons -- similar to garage band? Might not split up automatically though...
+
+# Echonest technique:
+
+## Movie
+1. User picks video 
+2. User specifies song from library or URL (or we give list of available remote songs)
+3. (automatically) API call to EchoNest and beat match songs
+4. (automatically or user) build order of bars to fit video length (longer or shorter)
+5. (automatically) duck music volume based on video volume
+6. export back to library
+
+3 songs:
+a. 1  2  3 [ … n-3]  n-2  n-1 n (bars)
+1 2 3 n-2 n-1 n (correct length)
+
+b.  1  2  3  4  5 
+c.  
+
+(interface)
+movie -> image -> variables -> music
+
+# Variables from music (via echo nest):
+* time signature
+* key signature
+
+
+# variables from movie:
+## Video import/headers
+* length of film (NSString *const MPMediaItemPropertyPlaybackDuration;)?
+  - Tracks -> Time -> [1][value]
+
+## With image analysis
+* fade-out
+* color content
+
+# Effects (output)
+* duck audio
+* pitch transpose
+* switch clips
+
+## Video:
+* shake orientation
+* discolor
+* slow down / speed up
+
+
+# Resources
+
+## EchoNest / Remix / Chopping code
+* Scissor - auto -  https://github.com/youpy/scissor
+
+* Python remix examples (see reverse) https://github.com/echonest/remix
+
+Maybe we can build a web-based version and api…
+
+
+## iOS sample code
+
+* AVMovieExporter - imports and from Asset/Media library, changes some metadata and re-exports as different filetype - https://developer.apple.com/library/ios/#samplecode/AVMovieExporter/Introduction/Intro.html#//apple_ref/doc/uid/DTS40011364
+
+* MoviePlayer - movie playback, playback controls, scaling and repeat - https://developer.apple.com/library/ios/#samplecode/MoviePlayer_iPhone/Introduction/Intro.html#//apple_ref/doc/uid/DTS40007798
+
+* AVPlayer - play video from Camera roll - https://developer.apple.com/library/ios/#samplecode/AVPlayerDemo/Introduction/Intro.html#//apple_ref/doc/uid/DTS40010101
+
+*auriotouch - waveform display in openGL https://developer.apple.com/library/ios/#samplecode/aurioTouch2/Introduction/Intro.html#//apple_ref/doc/uid/DTS40011369
+
+* StopNGo - capture images to live stream, re-export as movie https://developer.apple.com/library/ios/#samplecode/StopNGo/Introduction/Intro.html#//apple_ref/doc/uid/DTS40011123
+
+## Pizzaz
+* Squarecam - live camera, face detection and drawing https://developer.apple.com/library/ios/#samplecode/SquareCam/Introduction/Intro.html#//apple_ref/doc/uid/DTS40011190