FFMPEG image smearing with TCP #50
Description
#As in the title, I get severe image smearing after a period of time, and it affects all of my cameras (the outdoor cams may actually be immune, but they're a different model from what appears to be the same manufacturer).
My montage looks like this: https://imgur.com/a/ypWf0
Note, there are 55 cameras on this network (which is dedicated to IPcam traffic), and they are currently streaming 720p @ 11fps to a VM running Video Insight without any issues. ZM is running in a separate VM. System load appears to make no difference, regardless if it's hovering around 3, or 13 (VM has 10 cores allocated). Shared memory is at 6% (out of 11GB according to df -h. VM has 8GB allocated with 16GB swap). I have tested this system in the past with the VM running VI shut off, and I still experience this problem (again, with either 640x480 or 720p, at 11FPS).
Also of note, the camera's web interface allows for the user to set CBR/CVBR/VBR, I-Fram interval, FPS, and bitrate. None of these settings seemed to make any difference (I tested each variable separately, and together, on 5 cameras at once).
ZoneMinder Version (zmaudit.pl -v):
1.31.12~20171108111933-xenial
from the storageareas PPA
Linux Distribution and Version (cat /etc/os-release or cat /etc/redhat-release):
Ubuntu 16.04.3
If the issue concerns a camera, provide the make, model, frame rate, resolution and ZoneMinder Source Type:
Not really sure (client bought cheap off-brand chinese IP cams). Best info I can provide is that the controller board appears to be made by TopSee, and the model number is TH38A2-ONVIF. Supports ONVIF v2.04, encodes video as h.264 (obviously), current stream resolution is 640x480 @ 11FPS (experienced the same issue at 720p as well). Firmware appears to use Linux kernel 3.0.8 for ARMv5.
Source type is FFMPEG, RTSP over TCP (rtpRtsp).
Relevant log lines:
I believe the stream starts smearing around line 1569 (about 9AM my time)