Amcrest ProHD IP3M-956W wont work above 720p

[joeinbend]

Hey guys,
I just added a new camera to my ZM, it's an Amcrest IP3M-956W (http://a.co/fY0f2RJ). I was having a heck of a time getting it working (I have several other Amcrest cams, lower res, so I'm familiar with the config parameters), I finally tried dropping the res down to 1280x720, and the stream came up just fine. Change the res up to "1080P (1920x1080)" and it fails, change it to the very highest res "2304x1296" and it fails. I am of course updating ZM's resolution for the camera to match those settings as I change it on the camera. The stream from the camera's web interface is showing the stream at the desired res.

Here's my settings:
Source Type: Ffmpeg
Source Path: rtsp://user:pass@ip.address:554/cam/realmonitor?channel=1&subtype=0

What am I missing? I cant figure out why I cant bring it up to a higher res successfully

thanks!

[bbunge]

You may be hitting a shared memory limit in your tmpfs.

[joeinbend]

This is running as a VM, should I just bump up the ram?

[joeinbend]

That did the trick.. I bumped the VM from 2GB RAM to 4GB, and was able to crank the resolution up to 1920x1080

Thanks!

[knight-of-ni]

ZoneMinder uses your ramdisk, usually found under /dev/shm. It works just like a normal linux filesystem.
Keep an eye on how full it gets with "df -h /dev/shm". HD resolution cameras will use a lot of it, and you need at least ~200MB wiggle room free at all times.

We recently added the %full of /dev/shm to the web console to make it easier to see when it fills up. It'll be in the next release.

[joeinbend]

Thanks for the additional details. I checked my ZM VM and I currently have 586MB free on /run/shm. I'll be sure to keep an eye on that parameter when I add additional cameras in the future, and bump up my RAM as needed.

thanks!