Hi Peter,
See Customise "Entry in Process"
For live streaming, you need to change the value for ks-LIVE-STREAM-OFFLINE-TITLE.
You can see all messages and “const” names here:
https://github.com/kaltura/mwEmbed/blob/master/modules/KalturaSupport/KalturaSupport.i18n.json#L49
If you are hosting your own version, you can change modules/KalturaSupport/KalturaSupport.i18n.json directly, if you’re using the Kaltura SaaS, you’ll need to override it in each embed code as I illustrated on the other thread.