DVR not recording properly - DirecTV DVR

For DirecTV TV services which include DVRs and receivers, DVR not recording properly Shows in my DVR queue show full episode recoded but during playback anywhere from 1 minute in to 20 minutes it ends and the delete now message comes up. This is happening more and more often. Record time shows 1 hr and if I press play or pause you can see the full hour line on screen. There were no recording conflicts and no message that it didn't fully record. History shows them as recorded. Recent occurrence was all 3 shows recorded Friday night on CBS at 8pm 9pm 10pm.