Video Disk Recorder - Known Bugs
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* Sometimes picture and sound drift apart.
  Presumably this is a problem in the card driver or firmware?

* When the on-screen display is activated during recording,
  the video data stream gets corrupted, which results in a
  distorted picture when replaying such a recording.
  I assume this is a problem in the driver of firmware.
  There is no such problem in replay mode.

* After a replay session the screen may go blank.
  Haven't figured out yet how to ensure that it switches back to
  the current channel.