I recently installed a Speco DVR-4TN with the latest firmware and noticed the following when using the Speco Remote software and selecting events from the Search menu: 
  
1.	Event video plays the pre-alarm segment but frequently freezes when it gets to the alarm recording. If I use the Central Management Software to play the event, I sometimes just get an image frozen at the time noted on the Search screen. 
2.	Event video sometimes plays at a faster than normal speed until it reaches the alarm video and then plays ok (for an MPEG 4 recording).. 
3.	Occasionally the event video plays with some choppiness although recorded at 30 pps.. 
  
The above also occurs when I directly connect a computer to the 4TN or access it from the Internet. 
  
I also noted similar occurrences using the demo unit found on the specotech site;however, internet lags do contribute to the choppiness. 
  
Have other installers/users of the DVR-4TN noticed this?  Is this a normal occurrence for MPEG 4 based DVRs? 
  
Video plays acceptably if I download the video or play a selection using the software’s Play pull down menu. 
  
Thanks for any input.