Inherits DD::Image::ReaderFormat, and DD::Image::CodecHandler.
This is a codec format handler interface. This provides a custom labeled section of knobs to the reader formats that implement it. It is usually recommended for the reader formats to extend from a subclass of this.
Subclasses should implement codec_knobs() just as an Op would.
A reader format capable of handling both container and codec specific knobs.
Codec centric readers may want to implement this to expose codec specific knobs under a separate section with a custom name returned from codec_name method. An example is arriReader plugin, which is exposing arri specific settings (knobs). A good situation to use this format is when the codec reader (such as Arri) is initialised from a container reader (such as Mxf Reader). In that situation the container sepecific settings are isolated from the codec specific settings.
Subclasses should implement codec_knobs() just as an Op would.
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