I see what you mean, the stream seems frozen. Every now and then it seems to update.
I did see a couple Warn messages in the logs:
Changing RTP/AVSyncMethod to: systemclock in [install-dir]/conf/[application-name]/Application.xml fixed these 2.
WARN server comment - RTCPHandler.isTimeSyncReady: Hit MaxRTCPWaitTime synchronizing on system clock.
WARN server comment - Waiting for RTCP packet. See docs for (Application.xml: RTP/AVSyncMethod and RTP/MaxRTCPWaitTime).
And adding this property to MediaCaster/Properties container in [install-dir]/conf/[application-name]/Application.xml seemed to fix this error:
You may want to try a lower bitrate and check the fps/keyframe interval. 30 fps with a 2 second keyframe interval may fix the "frozen" stream issue, but not sure.
WARN server comment - Failed to find an appropriate depacketizer for this track (vnd.onvif.metadata)