Live video streaming in 2017 [closed] - html

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Many years ago, we built a live streaming application with Flash Media Server. Meanwhile, Flash got obsolete and we'd like to upgrade to a HTML5 solution.
Although I have found some answers on SO, but they seem a bit old.
Therefore, I wonder what is a good combo for video+audio live streaming nowadays (July 2017)?
The requirements are pretty simple: one broadcaster and many viewers (100+) that are using various modern browsers (IE11+, Edge, Firefox, Chrome). Ideally, we'd like to use a open-source solution.

On the wire I'd put DASH and HLS with AVC/AAC and then use HTML/JavaScript players. You can get a reference player here: http://dashif.org/reference/players/javascript/nightly/dash.js/samples/dash-if-reference-player/index.html
As far as servers - I'd try http://red5.org/
For authoring your live stream I'd try: https://obsproject.com/

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LightSwitch Calendar Screen [closed]

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I'm looking for a HTML5 Visual Studio LightSwitch, calendar screen template or extension, similar to outlook or Google calendar. Or is there a way to implement Google's calendar efficiently and legally?
For example.
This preferably needs to be free, and used in multiple programs, being sold by my company. Seems simple, yet I've struggled finding anything similar online.
Any help is appreciated.
Syncfusions calendar is very good, and if it's for yourself only you can get a community licence, which gives you the control completely free. Im pretty sure its for small business's aswell that turn over less than $1,000,000 a year, might be worth dropping them an email and asking about it. The support also is excellent
Demo: http://js.syncfusion.com/demos/LightSwitch/HTMLClient/

how to check for html5/css3 compliant web pages [closed]

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We are building web based application front end for a web based application using HTML5/CSS3/JQUERY. We are using firebug at the moment which is not helping us good. I would like to know how can i ensure the pages are html5/css3 compliant. I am also looking for a plugin like firebug, which will help my team to make sure we are following best practices and while building quality front end for web based application for fortune 500 client.
If i could get a plugin or any link to web based open source application will be great!
You always want to run tests on here towards the end. But you can also run them periodically.
http://validator.w3.org/
As codehorse has said you can validate them on w3.org. There is an add on for firebug which can do this for you (I have never used it). https://addons.mozilla.org/en-US/firefox/addon/validator/
Just found this one while I was looking at other stuff
https://addons.mozilla.org/en-US/firefox/addon/html-5-validator/?src=ss yet again not sure if it works.

Interact with devices services (HTML 5 vs Silverlight) [closed]

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We want to start new Web-base project.We need to provide interaction with devices services such as Calendar, Contacts, Camera, etc.(Possibly with upnp)
In a real project from Silverlight and HTML5 which one is a better choice?
Why?
For sake of simplicity I would use Silverlight. It is much easier to access a USB Webcamera via Silverlight over HTML5. On the flip side if your using an IP camera I would go with HTML5.
It's honestly up to you. I would go with whichever framework you are more familiar with. But keep in mine whatever you can do in HTML5 you CAN do (and more) in Silverlight. Silverlight has more power than HTML5 because you get all the HTML features as well as the Silverlight features. In HTML you only get HTML

Open source mp4 player [closed]

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Can you suggest an open source project dealing with playing "just" mp4? I don't want to have many available codec embedded in, just mp4 is adequate.
Thanks
I would suggest VLC, but you probably know it and ruled it out by now.
Using Google brought up this list.
ffmpeg, aka "the reference". (it has a little tool called 'ffplay' which is what you are after).
other that "just" mp4, VLC fits your bill perfectly.

Audio watermarking open source projects [closed]

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Are you aware of any open source libraries/projects that offer audio watermarking capability?
check wikipedia: http://en.wikipedia.org/wiki/Steganography#Implementations
section 3 of this site site is on audio: http://www.binary-universe.net/
same author did a project on codeplex.
these also do audio:
StegHide
mpeStego
We made a C++ watermarking library as a student project.
It implements:
Least Significant Bit watermarking (which won't resist anything),
Spread-Spectrum Watermarking (which should resist quite a bit but is very audible),
There is a MATLAB code for a Compression-Expansion algorithm which is said to be very robust according to the paper "Audio watermarking using time-frequency compression expansion".