What is the most straightforward way to use it in Windows? Haven't really find any.
Drag'n'drop?
These are really simple programs.
I also looked for some ways to convert.
OpusDropMP only accept WAV and fre:ac doesn't have Opus support.
Easiest is using
foobar2000 and set up a conversion preset.
When I just need to convert a single file through Windows Explorer, I used http://www.lopesoft.com/en/filemenutools (http://www.lopesoft.com/en/filemenutools) [ FileMenu Tools ] to make a custom context menu item.
I have created a .bat in the same folder as the decoder/encoder, that converts selected files through Windows Explorer's context menu.
Mostly I only got MP3s and using LAME for decoding them.
opus.bat:
lame --decode --silent "%~f1" "%temp%\%~n1.wav"
opusenc --bitrate 100 --vbr --ignorelength "%temp%\%~n1.wav" "%~dpn1.opus"
del "%temp%\%~n1.wav"
You can use TAudioConverter. It has both Opus support and menu integration.
Drag'n'drop?
These are really simple programs.
Do you mean
Drag'n'drop is the name of a specific software or what? Coul you explain what do you mean to like a 5-year-old? I truly appreciate you.
Andreasvb, ozok: thank you for your more actionable tips.
FWIW, LameXP (http://lamexp.sourceforge.net/) has Opus integration for quite some time now...
@Andreasvb
Just a side note:
The development version of fre:ac has Opus support.
I've tried most programs but none (except foobar2000) can retain all tags from ID3 v2.3.
Will use that one for now. Got latest Opus encoder from LameXP.
The gif in the drag'n'drop Wiki article (http://en.wikipedia.org/wiki/Drag_and_drop) should explain it.