Daily time-lapse video only records 16-18 hours

Question

I've been using motion for a while now to display a web cam. I don't really utilize the motion detection but I do want to produce a daily time-lapse video. I believe I have motion configured correctly and it does produce a video every day. The problem is that the video starts at 12:00am and then stops at somewhere around 6:00 - 8:00pm. I am currently running motion on a Raspberry Pi 2 using the Raspberry camera. But, I previously ran motion on a CentOS server and experienced the same behavior.

Config lines from motion.con for FFMPEG section:

# Use ffmpeg to encode movies in realtime (default: off)
ffmpeg_output_movies off
ffmpeg_output_debug_movies off
ffmpeg_timelapse 60
ffmpeg_timelapse_mode daily
ffmpeg_bps 1024000
ffmpeg_variable_bitrate 0
ffmpeg_video_codec msmpeg4
ffmpeg_deinterlace off

Environment

Motion version:	3.2.12-3.4
ffmpeg version:	6:0.8.17-1+rpi1
Libraries:	ffmpeg, mysql, postgresql
Server OS:	Raspian

-- PaulMcCarthy - 13 Jul 2015

Answer