Difference between revisions of "Finding Camera Stream Paths"

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===Example Camera===
===Example Camera===
Here's an example of one camera setup in ZM. Note that this is not the only way to setup cameras. There are a lot of other approaches that would've been equally viable. But in this example, we use motion detection, with a preview of 800x600 and h264 passthrough so that recorded videos are the full resolution (1920x1080). Also note that with this camera it's possible to set parameters via the address (e.g. the ? at the end of the URL can have fps or resolution set) which makes it easier to maintain the cameras instead of having to use the Web interface of the camera.
Here's an example of one camera setup in ZM. Note that this is not the only way to setup cameras. There are a lot of other approaches that would've been equally viable. But in this example, we use FFMPEG, motion detection, a preview of 800x600, and h264 passthrough so that recorded videos are the full resolution (1920x1280). Also note that with this camera it's possible to set parameters via the address (e.g. the ? at the end of the URL can have fps or resolution set) which makes it easier to maintain the cameras instead of having to use the Web interface of the camera.
<gallery>
<gallery>
File:Zmcamera example1.png|General Tab|link=https://wiki.zoneminder.com/images/a/ae/Zmcamera_example1.png
File:Zmcamera example1.png|General Tab|link=https://wiki.zoneminder.com/images/a/ae/Zmcamera_example1.png

Revision as of 07:57, 4 April 2024

This page contains methods and approaches for getting cameras to work with ZM. The best results will be with cameras tested by users in the Hardware Compatibility List. Next will be with cameras that detail the path in user manuals, and or are Onvif compliant. Proprietary and undocumented cameras are more difficult.


Overall, this can be as simple as looking in the user manual, or as complicated as reverse engineering and breaking into the device.

Overview

Typical methods of obtaining the cameras paths in order of easiest to hardest are:

  • User Manual/Website
  • Onvif probe
  • Search online resources and forums
  • Get access to the camera shell
  • Sniff network packets with TCPDump or Wireshark
  • Reverse Engineer

Double check that you don't have any other settings that may block cameras communicating to your computer (firewall, antivirus, etc). For new users who install using the recommended install guides, this should not be a concern.


Important: While doing this testing, you want to keep in mind the following:

  • Test outside of ZM, first. (this is faster)
  • Verify that ffmpeg / vlc works (see below for examples of usage)
  • use the info that works in ffmpeg or vlc in zm.

Testing out a Camera

Easy tools to quickly check whether a stream path works in ZM or not are VLC and Ffmpeg. As an example, VLC from the gui (file -> connect to network stream) would connect with a path possibly like 

rtsp://<username>:<password>@<ipaddress>:<port>/<somepath>

See the hardware compatibility lists for more details. Port for RTSP is usually but not always 554.

If you want to test from the terminal without X, you can use ffmpeg 

$ ffmpeg -i rtsp://<username>:<password>@<ipaddress>:<port>/<somepath>  output.mp4
alt (from X)
$ ffplay rtsp://<username>:<password>@<ipaddress>:<port>/<somepath>

If the stream connects, it will provide you with some information about the stream encoding, and also the resolution.

Note that the above are examples for RTSP. You would use http for MJPEG. See the Hardware Compatibility List for more details.

Required Fields

Not all fields are required to be filled in for Zoneminder.

  • Resolution must be right.
  • Most cameras require username/password.

If you are unsure how to fill in the information into Zoneminder, refer to the Hardware Compatibility List for other cameras, and copy them.

Note that the results you get from cameras will differ depending on how you connect to the camera (whether you choose, remote, ffmpeg, or libvlc in ZM).

Example Camera

Here's an example of one camera setup in ZM. Note that this is not the only way to setup cameras. There are a lot of other approaches that would've been equally viable. But in this example, we use FFMPEG, motion detection, a preview of 800x600, and h264 passthrough so that recorded videos are the full resolution (1920x1280). Also note that with this camera it's possible to set parameters via the address (e.g. the ? at the end of the URL can have fps or resolution set) which makes it easier to maintain the cameras instead of having to use the Web interface of the camera.

  • Error creating thumbnail: Unable to save thumbnail to destination

    General Tab

  • Error creating thumbnail: Unable to save thumbnail to destination

    Source Tab

  • Error creating thumbnail: Unable to save thumbnail to destination

    Storage Tab

Methods

User Manual

Reputable name brand cameras (Axis, Arecont Vision, Foscam, many others) will offer stream paths in the user manual or website. If you bought an unbranded cheap camera or one of the proprietary cameras sold in retail stores then you must move onto the other options.

Onvif

Starting with Zoneminder 1.30.4 there is an Onvif probe option in the camera configuration. You can also use external Onvif programs. Onvif is an open standard protocol, where you can get the path information from the cameras, and possibly other information such as PTZ commands or motion detection. https://en.wikipedia.org/wiki/ONVIF

Web Search Online

Ispyconnect has a large database of URLs available for cameras. The ZM wiki has some. Use a search engine. You may also come across a telnet or ssh password, which can be used to gain access to the camera shell.

Camera Shell

Many cameras run GNU/Linux. If you can get access to the files on the camera, through telnet, or through exploiting a vulnerability in the camera, then you can look around for paths. You may be able to send files from the camera to your local machine using FTP. Cameras often have busybox, or similar utils. Running the command "strings" on binaries may come up with something. Run nmap on the camera to see what ports are open. See more details in external links at the bottom. 

$ nmap -p1-65535 <ipaddressofcamera>

Wireshark

Watch the packets coming from the camera when accessing the video stream, and determine where the stream is located if possible. Some cameras require custom authentication, so if your camera is proprietary, then things are more difficult. This is the danger of purchasing cameras that don't follow the standard (onvif).

Reverse Engineering

Reverse engineering is one possibly time-intensive method of getting information from a given camera. See the reverse engineering links below.

Tips/Troubleshooting

External Links

Reverse Engineering Links

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