RED5 webcam capture failed to record sound

I have been testing RED5's webcam capture feature. (version 0.9.1)

Videos captured via 'Simple Recorder' app have no sound and do not play over 'OFLA Demo' app. However videos captured via 'Publisher' demo app have sound and play well on 'OFLA Demo' app. When I download the videos with no sound and test with a desktop video player, I get 'unknown audio decoder'开发者_运维知识库 error.

Is this expected behaviour? If not, what would be causing this?

Jaepil

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Reinstalled RED5 with r4156 revision from SVN trunk. This seems to have addressed the issue.