V2 of CRI Atom Encoder is the older version of CRI Atom Encoder and only works on Windows.
V3 version of CRI Atom Encoder has a common UI for Mac and Windows.

List of features excluded or reduced from V2

CRI Atom Encoder V3 has some features that are excluded from V2.
If you would like to add features that were in the V2 version, please contact us. We will prioritize adding features to the V3 version.
Alternatively, we can provide you with the final V2 tool separately.

Item	V2	V3
Streaming settings	On-memory stream, zero latency stream	Fixed stream
Downmix mode	None/Mono/Stereo	Fixed to None
Embed character code information	UTF8/Shift-JIS	UTF8 fixed
Advanced options	Append the original file extension to the end of the Cue name Use registration ID in the Cue name	(none)