Personal Encounter with muvee: An Exploration of Configurability and Style
Discover the journey of Srikumar.K.Subramanian through muvee's evolution, from muvee autoProducer to muvee Reveal. Dive deep into the realm of video creation tools, exploring the concept of configurability illustrated by Alan Perlis. Witness the fusion of video, pictures, and music in muvee Constructor Style Settings. Embark on a visual adventure unveiling the anatomy of a muvee through intriguing style authoring insights. Uncover the monolithic essence of muvee autoProducer, delving into the intricate details and effects that shape its unique storytelling capabilities.
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Presentation Transcript
Im LisP. I m inevitable. Srikumar K. Subramanian one@sriku.org Clojure users meetup at Pramati Technologies, Chennai 19 Feb 2020
muvee autoProducer (2002) muvee autoProducer 3 (2004) muvee autoProducer 4 (2005) muvee autoProducer 5 (2006)
muvee autoProducer 6 (2006) muvee Reveal (2008+)
Demo time Apologies! Sample video instead
Configurability One man s constant is another man s variable. - Alan Perlis
Video Pictures Music muvee Constructor Style Settings
https://srikumarks.github.io/muvee-style-authoring/Anatomy_of_a_muvee.htmlhttps://srikumarks.github.io/muvee-style-authoring/Anatomy_of_a_muvee.html
The monolith muvee autoProducer Effect segment_effect= new Effect("oldfilm"); Param grains = new Param("grains"); grains.setFloat(10.0f); segment_effect.addParam(grains); constfloatsegment_duration_tc[] = { 0.0f, 4.0f, 0.25f, 2.0f, 0.5f, 1.0f, 1.0f, 1.0f };
The monolith muvee autoProducer Style plugins Effect segment_effect= new Effect("oldfilm"); Param grains = new Param("grains"); grains.setFloat(10.0f); segment_effect.addParam(grains); constfloatsegment_duration_tc[] = { 0.0f, 4.0f, 0.25f, 2.0f, 0.5f, 1.0f, 1.0f, 1.0f };
The monolith muvee autoProducer Style plugins BaseStyle XML config reader Basic XML config <segment-duration-tc> <at x="0.0" y="4.0"/> <linear x="0.25" y="2.0"/> <linear x="0.5" y="1.0"/> <linear x="1.0" y="1.0"/> </segment-duration-tc> <global-effect> <effect name="sepia"/> <effect name="oldfilm"> <param name="grains" value="10.0"/> </effect> </global-effect>
The monolith muvee autoProducer Style plugins BaseStyle XML config reader Basic XML config Advanced XML config <global-effect> <effect name="myfilm"/> </global-effect> <define name="myfilm"> <effect name="sepia"/> <effect name="oldfilm"> <param name="grains" value="10.0"/> </effect> </define>
The monolith muvee autoProducer Style plugins BaseStyle XML config reader Basic XML config Advanced XML config <global-effect> <effect name="sepia"/> <effect name="myfilm"/> </global-effect> <define name="myfilm"> <effect name="sepia"/> <effect name="oldfilm"> <param name="grains" value="10.0"/> </effect> </define>
Crazy experiments with GPUs muvee Reveal v7 v8 ... v3 v4 v5 v6
The emergence of muSE Figure out how to play photo slideshows using OpenGL. Basic s-expressions: strings, symbols, numbers, lists, native operators only, no variables, quote or define! Figure out pipeline to render photos smoothly using multi-threading. Simple functions with dynamic scoping. Variables - i.e. define Explore how to compose visuals and effects. ShowTime Lexical scoping. Finally a GC!
The monolith muvee autoProducer Style plugins Style DSL Basic XML config Advanced XML config muvee Symbolic Expressions (muSE) (define myfilm (effect-stack (effect "sepia") (effect "oldfilm" (param "grains" 10.0)))) (define muvee-global-effect myfilm)
The monolith muvee autoProducer Style plugins Style DSL Basic XML config Advanced XML config muvee Symbolic Expressions (muSE) (define myfilm (effect-stack (effect "sepia" (param "tone" (fn (t) (math 0.5 + (0.5 * (loudness t))))) (effect "oldfilm" (param "grains" 10.0)))) (define muvee-global-effect myfilm)
ShowTime: The DSL's basis type Show = Time Image cut :: Time Show Show Show cut tc show1 show2 = t if t < tc then show1 t else show2 t
The monolith muvee Reveal Style plugins Style DSL Basic XML configuration Advanced XML config muvee Symbolic Expressions (muSE) (define muvee-global-effect (effect-stack (effect "sepia" (A)) (effect "oldfilm" (A) (param "grains" 10.0)))) (A) muSE with "ShowTime" (define muvee-transition (effect "crossfade" (A B)))
What did we get? Rapid style authoring iterations Composeable visual effects Style could be read as data or as code Incremental feature addition Speed of development of styles with complex music driven effects End users could make their own editing styles https://github.com/srikumarks/muvee-style-authoring
Where else do we see this pattern? Web Browser HTML / JS / CSS nginx Lua Redis Lua Game level design Lua Blender Python Nix package manager Nix language
Where else do we see this pattern? RDBMS SQL Datomic Datalog Open Firmware Forth GPUs Shader languages Clojure deps Clojure EDN
Where do we NOT see this? mvn pom.xml Docker Dockerfile NodeJS package.json Rust build Cargo.toml Kubernetes manifest.yaml Terraform HCL
Where this is done badly Scala build SBT Web sites JSP / Templates
Links muvee https://www.muvee.com muSE - muvee Symbolic Expressions (The dialect of Scheme used in muvee Reveal) https://github.com/srikumarks/muSE muvee style authoring docs (Documentation and tutorials for how to make your own video editing styles) https://github.com/srikumarks/muvee-style-authoring https://srikumarks.github.io/muvee-style-authoring/
Other links Functional Thinking http://sriku.org/blog/2015/08/11/talk-functional-thinking-for-fun-and-profit/ Beta abstraction http://sriku.org/blog/2016/02/06/beta-abstraction-for-bottom-up-theory-building/
