I am building an iOS App which displays video streams from a somewhat complex backend. Now while developing I want to be able to have some sort of test video stream, which I can use. Ideally this would also work without internet connection.
The video stream could show for example the current time or just a simple animation. What would be a good way of doing this on a Mac without having to install a whole suite of tools.
On you Mac you can setup a webserver or streaming server to provide you with a constant video stream for testing purposes. You won't need Internet access. You will, of course, need to ensure that the OSX firewall is either disabled or allows requests to the ports (80, most likely).
Two simple approaches I can see:
Wowza MPEG-TS stream of the Webcam on your mac
Install Wowza Media Server; developer license is free
Configure a basic applicaiton with MPEG-TS streaming
Use an encoding applicaiton, like Flash Media Live Encoder (free), Wirecast (demo version free), or some other software and start streaming from your webcam to the WMS
alternatively, with a bit more effort, you could setup Wowza to stream a file in a loop
be sure to get the codec settings correct
M3U8+MPEG-TS static files over plain HTTP
Simple Setup a basic webserver (lighttpd, Apache httpd, Apache Tomcat, whatever) to server static files
Whip up an M3U8 file to first point to a .ts media file, and then secondly back to itself
Have a look at MPEG-TS/M3U8 live stuff to work out the details. You'll need a properly segmented video file to start with.
Related
I am trying out VOD streaming with latest VLC as described in this wiki:
https://wiki.videolan.org/Documentation:Streaming_HowTo/VLM/ and trying to stream an HD movie file with extension mp4.
i am able to open the stream in VLC running on the same machine, but it takes lot of time to even start playing back. (minutes). The test is run in Fedora 20.
My machine is capable enough to play HD video.
I have tried with and with trans-coding and results are same.
Help is appreciated.
Found the issue and it is strange.
I had the streaming server and client in the same machine. The streaming was always extremely slow. However, disconnecting from the network made it work fast.. It did not matter whether the network connection was wifi or ethernet.
However, if you were to run the client in a different machine, it work properly.
I'm looking to find a way to stream a user's desktop LIVE (through some piece of software, such as Open Broadcaster Software) to a web application.
I'm assuming I should use a CDN to get the live streamed video to my web application, but how (and what software should I use) to get the user's desktop to a streaming service? Should I use a service such as Red5 or an AWS service? Or if only a few viewers are using it, should I host the service myself?
Although I have built my share of web applications, I have never dealt with live media streaming before, and I would appreciate any assistance anyone could lend.
By far the best resource for video on Rails is OpenTok
Our own demo here: http://bvc-video.herokuapp.com/broadcasts/1
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Streaming
Video streaming is a tough one
The problem is really dependent on what you're trying to stream. If it's "live" video - I.E captured & sent directly to the viewers, you'll have to use some sort of server to process the video.
Although I don't have huge experience with this, the main issue we've found is the compression / distribution of the feed. It's actually very simple to acheive video streaming on iOS - all the software / hardware is the same (just use the same API / drivers)
This often negates the requirement for a central server, although it's highly recommended (almost required) for many cases. Problems arise when you try and beam to multiple clients on multiple systems; as you'll run into compatibility issues
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Solutions
The solutions we've found are thus:
The most stable part of the app is to take the stream & send to a server
The wizardry will then be to beam that stream to multiple clients
The way to do this is typically to use a flash widget & pull the stream from the server
WebRTC is becoming the standard (OpenTok is built on this)
I'm not sure about video compression / distribution. Akami is an industry heavyweight, but I've never used it. Brightcove too
I have a really high quality RTSP feed coming into a windows server. I'm attempting to use VLC to restream it as Http Live Streaming.
Does anyone know whether it is possible to establish this stream through VLC's graphic user interface as opposed to the command line? If so, how?
The examples I've found so far (on here and elsewhere) have all been command line examples and none of them have worked at all.
I would love to hear from anyone who has actually accomplished a successful restream of RTSP to an http live stream using a windows server. Incidentally, I already have the website set up to serve the result, but I can't get the stream to write the .ts files regardless of what I've tried.
I'm stumped. Thanks.
just look this command for example:
vlc -I dummy rtsp://ip:port/blablabla--sout '#transcode{vcodec=h264,fps=20,vb=512,scale=1,acodec=none,venc=x264{aud,profile=high,level=60,keyint=15,bframes=0,ref=1,nocabac}}:duplicate{dst=std{access=livehttp{seglen=10,delsegs=true,numsegs=10,index=/var/www/live/mystream.m3u8,index-url=http://ip/live/mystream-########.ts},mux=ts{use-key-frames},dst=/var/www/live/mystream-########.ts},dst=std{access=http,mux=ts,dst=:8082/video.mp4}}'
I'm having a problem here. I want to play RSTP streaming on ipad and iphone. but I find out that it will be much more easier if I use Http Live Streaming. I want to convert my RTSP streaming to Http live streaming using lighttpd. but I really have no idea how to do that. Do lighttpd accetp rtsp streaming url as input? Can anyone help? thanks!
you have two choices:
1) Run a server on your network that re-streams rtsp as hls.
a) wowza - popular, expensive
b) live 555 - free, lots of work
d) ffserver - free and as basic as it gets tons of work to make work.
Advantage :
No bandwidth restrictions over cellular or wi-fi
play with native apple players
Disadvantage
High server bandwidth - if your paying for server time you may want to watch this.
high letancy - forget any kind of live video.
2) Run FFmpeg based player on device
advantages :
a) A lot easier than it used to be, we do this all the time
b) deal with lgpl license, clear guidelines at ffmpeg.org and not a huge hassle
c) all on device, no server load issues.
Disadvantages
Limited bandwidth over celluar (about 10 min intervals), unlimited over wifi
lighttpd doesn't accept RTSP as an input. You will need some sort of translator program to read the rtsp stream and output the files to the website storage. I think you could do it with the avconv/ffmpeg program.
I am a beginner with Windows Azure and I want to make an app which does facial recognition on a video stream. Hence I need to install OpenCV (C++ Library).
How do I do that? And how do I get the video stream from the client app? (I am in control of the client app as well).
If the library simply needs to be on the path for your application to pick it up, then just add it as an item in the project you're deploying, and it will get uploaded up to Azure, and deployed alongside your application.
If some commands are required to install it, you can use startup tasks.
As for the video stream, you can open a socket (using a TCP endpoint) and stream the video up to an azure instance that way. That's probably the most efficient way of doing it if you want real time video processing. If you want to record the video and upload it, look at using blob storage. You can then use a message queue to signal to the worker, that there is a video waiting to be processed.