HDHomerun Streams Fine, But Recordings Stutter

HDHomerun tuners let you record an OTA stream via http, so I’ve been using cron as a rudimentary DVR to save episodes to the micro SD card. My recordings have a stutter that recurs about every minute. The stutter persists whether I play the recording back on the Pi or my laptop.

The stutter doesn’t occur when I stream the channel live to the Pi; nor does it occur if I record directly to my laptop. I’ve uploaded some sample recordings made on my Pi and laptop. Any help is appreciated.

Sample Recorded on Raspberry
Sample Recorded on Laptop
Log File