vBET 3.x supports translation of RSS channels in all types. That means for: RSS2, RSS1, RSS, XML and JS.
Creation of translated RSS channel couldn't be easiest. All you need to do is to add language code into channel URL. So if my normal RSS channel have url:
<![CDATA[vBulletin Enterprise Translator (vBET)]]>
Then to make it in Japanese you just add
ja/ before
external.php for SEO links, or
&language=ja for normal links. Here you have example for SEO link:
vBulletinによってエンタープライズトランスレータ(vBET)
Come on - click booth links. See the difference. Play a little

Change language code, change channel type (allowed values: RSS2, RSS1, RSS, XML, JS).