-There seems to be a bunch of code that allows you to replay previous
-video. I've never tried it, so it probably doesn't work properly. YMMV.
-In fact, in order to get some level of stability, ffserver now deletes
-all the previously sent video whenever it restarts.
+You can replay video from .ffm files that was recorded earlier.
+However, there are a number of caveats, including the fact that the
+ffserver parameters must match the original parameters used to record the
+file. If they do not, then ffserver deletes the file before recording into it.
+(Now that I write this, it seems broken).