we're using a couple of hundreds Hikvision Cameras (DS-9664NI-I8) for a University. We want to embed them to a web page hosted locally. Cameras, NVR, and webpage are on same local network.
We don't want to use RSTP, we will use HTTP.
We're able to run the camera sub-stream on the browser using the following URL
http://<username>:<password>#<IP Address>/Streaming/channels/102/httpPreview
But, when I embed this to image src, this won't work, as browsers don't support the HTML embedded credentials.
How to play the camera streams on the web page?
You can disable security on streams. But if it possible - that depends on your camera and its firmware version. And be aware of consequences of course, secure your image with another means - firewall, etc.
Related
I have a product that can analyze video after inputting an rtsp url.
I would like to use a webcam to stream and feed my product the webcam rtsp.
How can I do that?
It will depend on the webcam you are using - most support RTSP but many do not publish the interface to access the stream as they are designed to be used with the webcam's own companion app.
There are some web resources which provide the RTSP urls for common web cams - you may find it hard to find a match as new versions of webcams roll out but it should give you a feel how to try accessing a vendors camera if you have a specific web cam you are testing against. Some examples (at the time of writing):
https://www.getscw.com/decoding/rtsp
https://soleratec.com/get-support/rtsp/
If you can't find the info for the camera you are using, and you have the companion app, you can also use a network sniffer tool like Wireshark (https://www.wireshark.org) and try to search the traffic for 'rtsp://' pattern.
If you just need to test your app and have access to a raspberry pi with a camera module you can also use this to generate an RTSP stream - there are several approaches for this but one I have found reliable is the v4l2rtspserver server:
https://github.com/mpromonet/v4l2rtspserver
There are specific instructions for setting it up on PI (https://github.com/mpromonet/v4l2rtspserver/wiki/Setup-on-Pi) and you can also verify it is working using VLC player on a laptop etc before testing in your specific application.
There are also a small number of test RTSP urls available on the web - the most reliable seem to be the one at this link provided by Wowza (again, link valid at time of writing):
https://www.wowza.com/html/mobile.html
I'm playing with the API on a camcorder Sony CX-625. I can start/stop a record, change zoom over a Wifi connection.
This is nice, but ...
Now, I need to download the content store on the SD card over Wifi with the API. I have make a lot of research, but it seem the function is not available.
Maybe another model of Sony Handycam can give this functionnality. Anybody can help me in this research ?
My goal is to have a camcorder (or an IP Camera with quality of a camcorder), remotely administrable by an API (start/stop record, manage zoom, get/delete the content)
You should be able to download the image using HTTP get. For instance if you run the "actTakePicture" command you will be returned the url for the image. Having this url will allow you to download the image. How you download the image depends on what language you are using. For instance here is an example of how to download an image over HTTP get using nodejs:
Downloading images with node.js
To find out how to download the image using your particular language try a google search on "download an image using http get {language of choice}"
After reading the docs, it seems that phonegap/cordova is like a local web server that serves html, js and css to the mobile native browser.
Can phonegap/cordova serve files not only in local ? i want to know if it is possible to make them LAN servers for example, without installing apache on the mobile device??
Thanks.
UPDATE:
I feel i need to describe my probleme.
I need to create a mobile app, that allows mobile devices connected on the same wifi network (without internet) communicate with each others. If this is possible only with phonegap it would be great.
Cordova uses the WebView component to display your content. It's more or less equivalent to opening html files directly in your desktop browser by going to file > open.
If you want some content on a lan, just link to it in the html that is rolled into the Cordova app as you would load any content in html from an external source.
I have a problem with embedding SWFs via SSL.
I know that the common misconception with embedding SWFs on secure pages is that people always try to embed it using a non-secure link. This isn't the case, as I am trying to host the SWF and swfobject.js locally using relative paths to account for the use of SSL.
It appears that the first of these players (under ssl) will play the audio playback, but won't display the video, while the second one will render the entire SWF fine.
Here are 2 examples that are EXTREMELY similiar. Unfortunately I can only post 2 hyperlinks, so you'll have to swap the http: protocol with https: to see how each player renders under SSL.
These 2 players are using 2 different SWF's, so I'm lead to believe it's a Flash/ActionScript issue, but I have failed to isolate it.
Example 1
Non-secure working embed
Example 2
Non-secure working embed
First, Mixed http & https are different domains that run afoul of the Adobe Flash Player's same-domain security restriction. Using a cross-domain file on the root of your server will allow access.
Second, IE has some known problems with SWF and SSL.
Third, be sure to enable https and check to ensure you have a valid root certificate.
Without more information, this is the best I can do.
The best way is to test your work using the Debug Version of Flash Player. This works best in Firefox. Chances are there is something (dependency or resource) that the player is trying to get without SSL.
I'm a C programmer and a total newbie to Flash/video/web world. Don't know where/how to start, and so would greatly appreciate your initial help.
Question
If I need to host flash videos off of my website (instead of embedding YouTube links on my webpages),
AND
If I need to provide player API like YouTube's that can be used, say, for supporting chromeless player versions customizable via this custom API of mine...
THEN
What do I need to do essentially...?
Write a custom Flash video player?
If yes, how? I mean, using which Adobe products / tools / SDKs / language(s)?
Is there anything free/opensource available for doing this? Especially, for Linux platform?
Write a new browser (firefox) plugin for users visiting my site?
Not sure how my custom Flash video player will get to the user visiting my site for the first time?
Any books, resources that cover this problem well?
Does the Flash content need to hosted off of a Windows server only?
Currently lost. Thanks in advance,
/SD
Flash has video playback support built-in, so all you need to do is use the Flash authoring environment or Flex to compile a .SWF file that uses the video API, with some buttons to stop and start the stream, volume, seeking, anything else you want your player to do.
Many people have already done this for you, in a way you can easily use from simple HTML. See eg. OSFLV, Flowplayer, JW...
Write a new browser (firefox) plugin for users visiting my site? Does the Flash content need to hosted off of a Windows server only?
Lord no! Flash video would never have taken off if it was just another custom-server+custom-plugin piece of unpleasantness. Though special streaming servers are possible, for the most part it's just an FLV file sitting on a web server.
(FLV is the video format supported by the Flash video playing functions. There are many, many tools you can use to convert other formats to it; I use Avidemux.)
If you are planning to use a "Progressive Download" approach, then your FLV files can be hosted on a Windows or a Linux box. Be aware that:
it is no as efficient as true
streaming.
you may not use it for live events
nor only for stored video files.
it cannot automatically detect the
end user's connection speed.
it is not possible to jump ahead to
another part while it's downloaded.
the video file will be saved on the
end user's computer.
If you are planning to use a "Streaming" approach then you can either buy and use Adobe's solution (Flash Media Server, available on both Windows and Linux box) or sign up for a hosted solution. On this page you will find recommended providers by Adobe. I personally have been using Influxis's hosting with success for a couple of years already.
You can also write your own streaming server but that would be a lot of hard work. If you are interested in that, I would recommend you have a look a Red5 which is an open source Flash Server written in Java.