Whisperfile is not only able to transcribe speech to text. It's able to
translate that speech into English too, at the same time. All you have
to do is pass the -tr or --translate flag.
In order for translation to work, you need to be using a multilingual
model. On https://huggingface.co/ggerganov/whisper.cpp/ the files that
have .en in the name are English-only; you can't use those for
translation. One model that does work well in translation mode is
ggml-medium-q5_0.bin.
By default, the source language will be auto-detected. This works great
except for recordings with multiple languages. For example, if you have
a recording with a little bit of English at the beginning, but the rest
is in French, then you may want to pass the -l fr flag, to explicitly
specify the source language as French.