* chorus_flanger: variable delay audio filter
* chroma_neon: ARM NEONv1 chroma conversion module
* clone: Clone video filter
- * cmml: Continuous Media Markup Language annotations/hyperlinks decoder
* colorthres: Theshold color based on similarity to reference color Video filter
* converter_fixed: Fixed-point audio format conversions
* converter_float: Floating-point audio format conversions