Learn how to say Encoder correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word encode:
to convert (a message) from plain text into code
(computing) to convert (characters and symbols) into a digital form as a series of impulses Compare decode (sense 2)
to convert (an electrical signal) into a form suitable for transmission
to convert (a nerve signal) into a form that can be received by the brain
to use (a word, phrase, etc, esp of a foreign language) in the construction appropriate to it in that language