I will admit, I've been very frustrated with zoneminder but I'm not giving up, I'm just going to beat on this package till I fully understand it or die trying. I'm posting the things I am able to solve so that one day someone else will discover the post and be able to use the info.
ZM Server: Ubuntu 14.04 Headless
Version 1.29
Camera: Samsung Tab 4 running Ip Webcam.
2016-03-03 08:41:26.192244 zmc_m1 4338 ERR Unable to decode jpeg zm_remote_camera_http.cpp 1151
2016-03-03 08:41:26.191974 zmc_m1 4338 ERR Failed requesting writeable buffer for reading JPEG image. zm_image.cpp 1051
2016-03-03 08:41:26.191109 zmc_m1 4338 ERR Held buffer is undersized for requested buffer zm_image.cpp 331
Solution:
Changed the size from 320x280 to 640x480 of the monitor. Works fine now.
Zoneminder. Informational Post
Re: Zoneminder. Informational Post
Yup, we tell folks all the time that the resolution has to be correct to the pixel!