6 seconds not 12 playback

On several of my camera, I see the playback timeline is 12 seconds long, but the playback stops at 6 seconds. Any ideas?? Tx

If you are using the December 2021 version of the camera firmware change it back to the November version Download the firmware file to your computer, extract the sd_update file to a SD card and follow these directions. I and many others had this issue and it was corrected doing this. I did mine last week and all cams are now doing the full 12 seconds. See directions below and a link to thread about this issue of double speed below.