I was wondering if there is a way to use the web_url function available from the nest camera, which returns an embedded flash video of the camera stream, to download the video into a buffer, from which I could do any analytics upon with OpenCV, e.g. face detection.
I don't know if saving the video from the embedded flash into a buffer is the way to go (how would I do this?); or if there's some way to access the stream from openCV as you can do with typical IP cameras?
web_url simply gives the URL to the page on home.nest.com. The user has to be logged in. Nest Cam is not an IP camera and streams are not currently available via the API. You would need to write something to scrape the web page at home.nest.com that would be able to stay logged in.
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I want to be able to load only the audio stream of the youtube video and process it (EQ, Effects, etc.) through a graph of Web Audio nodes.
Is this doable? Any open-source work out there, doing that?
Thanks in advance to all and any responses.
No, because you can't get audio streams cross-domain. (that is, if your code could be hosted on YouTube.com, sure, but not from mydomain.com.)
The reason for this (you CAN do it if CORS is set up, but it's not on YouTube) is because if you can get the audio stream, you can do a bit-copy of the data. Just like images, they don't want to leak the raw data.
I have just bought an wansview IP camera model NCM630GB. I am able to play it video stream in browser but i am not able to open its in open CV using video capture object. I have tried different solution already present on stack overflow but the actual problem is getting url of video stream. Can anybody tell what is the videostream url of wansview IP camera or any method to find it.
According to their documentation (page 22), the url should be:
http://IP address:port/videostream.asf?user=user name&pwd=password
Try it with VLC to see if you can get the stream. If succeed, then in OpenCV, append x.mjpg to the url, like this:
http://IP address:port/videostream.asf?user=user
name&pwd=password?x.mjpg
I was wondering if I can use an HTTP protocol to acquire an image stream from an RTSP camera? I am currently using VLC Media ActiveX Plugin to connect to and view the RTSP stream, but I would like to eliminate the ActiveX control and move to a more raw level of image acquisition. I recall seeing somewhere that it's possible to get these images using HTTP. I'd like to use Indy TIdHTTP component to connect to the camera and acquire the image. I'm also assuming this would need some sort of speed control, such as a delay in-between requests. However, it's also my understanding that these RTSP cameras have pre-defined frame rates, which using the standard RTSP protocol are supposed to follow.
many cameras will allow you to grab screenshots with a URL that might look like:
http://user:password#camera/snapshot.jpg
for a proper stream, you would need to use RTSP (there are Delphi RTSP clients), tunnelling over HTTP if your device supports the application/x-rtsp-tunnelled content type, or another stream your device supports.
i am trying to set up a few ip cameras for a client.
yet i am having trouble getting the stream from the camera to the webpage then for it to play through a player. i have tried different players such as WMP, VLC(cant get it to work). i am now trying to use jplayer which would be great if i could get it to work on this one as works for phones or so it says.
what i have done so far is to go into my router(thomson TG585 v8) and set up port forwarding.
i have set up port 554 on TCP/UDP which in the camera settings is the RTSP port.
i have set my camera to a static ip and am using no-ip for the ddns.
rtsp://thepolishedknob.servebeer.com/h264/1/media.amp
this is the url i am trying to use but i cannot get the stream on to the player i know the stream works outside my LAN as connected to it through VLC last night.
if anyone can help me it would be greatly appreciated as been working on this for over a week and been going nowhere.
so if you have noticed i have missed anything out or done something wrong please let me know.
There is no universal way to do the embedding. Typically solution is one of the following:
As IP cameras comes with web interface, they already provide some way to present video off the web page. Often, this is an ActiveX control based solution with respective browser limitations. You can check HTML and duplicate the code, and it can also be mentioned in the vendor's documentation.
As you discovered the stream is RTSP, and hopefully valid RTSP without tricks, there might be a third party solution "player" to present the stream off the webpage.
You might want to re-encode the stream into another format (VLC or another aplication), such as M-JPEG which is more browser friendly. You'll find a lot of discussions for this, e.g. http://forum.videolan.org/viewtopic.php?f=16&t=57715
There is a WWW page with Flash stream on it. I want to download and forward this stream to another streaming server, when possible - replace audio stream (e.g. translate), but without recompressing video stream. Usual way for this ATM is to capture and broadcast Flash player view from the web page, which is obviously suboptimal because video needs to be recompressed, making the quality notably worse and loading the cpu.
Has someone an idea how to do it? VLC seems to be able making relay, but it also seems not to support RTMP at all.
if you're ready to do this programmatically you can use crtmpserver (C++) or red5 (Java) with any RTMP client, otherwise this question doesn't belong to SO