I would prefer a comment that also explained why there is a minimum. In addition to the bug reference you could say that some camera hardware produces corrupt video files if the recording time is too short.  Also it would be good here to have some kind of XXX or TODO comment acknowledging that ignoring the user's tap like this is a really bad thing to do.

Filing a followup bug to do something smarter eventually would be good.  Like accepting the button press and scheduling stopRecording() the required number of ms in the future.