iSpy | Open source surveillance software | Camera library
kandi X-RAY | iSpy Summary
kandi X-RAY | iSpy Summary
iSpy is the world’s most popular open source video surveillance application. It's compatible with the the vast majority of consumer webcams and IP cameras. With more than 2 million users worldwide, iSpy works with more cameras and devices than anything else on the market.
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QUESTION
I'm trying to make a script that monitors a directory (where recordings from a VHF radio are saved by iSpy) for new files and applies a noise reduction process to them using the SoX binary. The simplest part of the script is where I'm failing: I'm not passing parameters to the executable properly. I've tried multiple iterations of the command I'm using based on solutions found on this site only to run into new problems. I tried various quoting strategies I do not understand and piping to CMD but there's obviously something basic that I'm missing. I'm very new to PS and scripting in general, so help would be appreciated.
The whole script (early WIP) is at the bottom of this post.
The binary expects a simple syntax:
...ANSWER
Answered 2021-Jul-18 at 00:13&
, the call operator, is situationally required for invocation of commands (including external executables), namely if the command is specified via a quoted string and/or a variable or expression, possibly as _part of an expandable (interpolating) string ("..."
).- However, it's safe to always use
&
- However, it's safe to always use
To programmatically pass multiple arguments to external executables, use an array.
- Be sure to make each argument its own array element; that is, use
$array = '-n', 'noiseprof'
and not$array = '-n noiseprof'
- the latter would be passed as"-n noiseprof"
, i.e. as a single, double-quoted argument.
- Be sure to make each argument its own array element; that is, use
Except in edge cases due to legacy bugs relating to values with embedded
"
chars. and empty strings - see this answer - do not enclose arguments in escaped"
chars., e.g."`"$var`""
- if the value of$var
contains spaces, PowerShell will automatically double-quoted it behind the scenes.Do not use
Invoke-Expression
, which should generally be avoided, to invoke external programs - see this answer.
Applied to your case:
QUESTION
I've got a problem with running tests. After running ng test
command, the command line shows
ANSWER
Answered 2020-Jun-01 at 09:23Run npm i @types/node@latest --save-dev
QUESTION
I have a WebRTC solution based on Chromium browsers which uses local device cameras. However the cameras are mounted at a significant distance and cannot be connected to any PC via USB. They can be connected into the LAN via ethernet cables.
Is there any way to emulate the cameras as a local media device so that navigator.mediaDevices.enumerateDevices recognises them? Can I change the code or use any APIs to the detect IP cameras? Any pointers would be greatly helpful.
I have tried the options:
1. Add device in Windows Settings. Did not work as it requires specific Windows Insider update.
2. IP Camera Adapter, ManyCam, iSpy did not work as they all support HTTP. My HD cameras only support RTMP protocol.
ANSWER
Answered 2020-Apr-09 at 08:24v4l2loopback is one way you could do this! This allows you to feed a virtual webcam on Linux with arbitrary media.
Then you could have a pipeline in GStreamer that looks like
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