Check audio configuration with Web audio API [closed] - javascript

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I need to play a sound on one earphone while playing two other sounds in the opposite earphone in an auditory online experiment in JS. Web Audio API gives, at least, two ways to do this :
Create a buffer with two channels and send one sound on the first channel and the two others in the second one.
Use pannerNode for each sounds.
I got this and after some tests, everything is okay.
But, the new problem I got is that some Windows configuration propose a sound parameter allowing to turn sound to mono. So, the problem remains the same. Windows is not the only one to do this, some software such as Dolby or others can prevent stereo. And it could be worse : they could apply filters that would modify the sounds. I know I can't avoid it because browsers prevent me to change parameters for security purposes.
In this situation, I would like to know if someone would have an idea of how to check if the sound configuration is correct. Thus, I could say "okay you can do the auditory test" or "sorry your configuration doesn't allow you to do the test".

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What should I do when my database is too huge and I need all the data initially at the frontend [closed]

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I use Mongodb and my collection has gotten very huge. It contains 15k documents and it's size is almost 15 mb. The website I am working on uses a map and shows every element on the map. This design of the website makes it hard to paginate. Whenever I make a request to my express backend, it gives me error about the javascript heap out of memory.This is that error
What can I do to make sure my website still works while keeping these things in mind:
My database is too huge
My website doesn't allow pagination
If I keep using the current design my backend crashes
I'm sorry if I am being stupid or something, this is my first time asking a question on stackoverflow
Don't do pagination, but still load the data incrementally, and visualize it as it arrives. Think of it as a loading animation.
Step 1: Load app, display the map without data
Step 2: As the data arrives in chunks render it.
Or use something like websocket.
Find a way to hash/paginate it, even if you use something stupid like first character of the ID to do it

How to create code for existing .exe file without knowing source code? [closed]

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What is the general approach to something like the following:
Lets say I wanted to create code that would automatically trade stocks on the Thinkorswim desktop app, how can I look up stocks, set trade parameters, and execute without knowing what the functions are or even having access to those functions?
Or say I want to create code that would perform automatic google searches so functions like new tab and filling in the url field can be carried out in my own code?
Or suppose I had a mobile game on Bluestacks (Android Emulator) and I wanted to create a bot that played the game based on a certain algorithm.
How would one go about these things without knowing the source code to the .exe they want to manipulate? I know people do things like this regularly, so what is their approach?
some examples that you are asking is called reverse engineering and it's a very complicated process, its not impossible but you are trying to achieve something that will require more time than creating it by your own.
An example of what you might want to achieve:
https://github.com/zeldaret/mm
You can see here that there are still lot of tasks to work on... and this game is from 2000.
https://trello.com/b/ruxw9n6m/majoras-mask-decompilation
Also if you want to control software itself, in a custom GUI and there is no api, its gonna be a problem.
What you might be able to create is a bot to control the mouse and interact with your GUI on a given resolution.
If you are looking for a webapp solution, you can create automation bots with Selenium and other software to interact with the DOM on a browser, also developers might change the page and your bot will break.
Have fun programming those. :)

WebRTC - connection between two different web browsers [closed]

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So, I have a WebRTC web app with audio, video, chat and file sharing. Everything works fine on chrome: PC-to-PC, Mobile-to-PC. I've also added the latest version of adapter.js to the html file.
When trying to test communication between different web browsers, everything pretty much fails.
Tested the following scenarios:
Test 1
Firefox/Edge = Caller
Chrome = Answerer
Video is visible on Caller's side, but on Answerer's side I get the following error:
DOMException: Could not start video source
Test 2
Chrome = Caller
Firefox/Edge = Answerer
Video is visible on Callers side, but on Answerers side nothing happens.
As stated above, I've adapter.js in the html file, also I've added stun/turn servers when creating a new PeerConnection.
If anyone has any ideas about this, it would be much appreciated.

What are the steps I should take to make video difficult to be downloaded? [closed]

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I'm using Videojs plugin to show my videos, but there are many issues facing me like when I load video Internet Download Manager and other video downloaders grab it and there is an error appends , so I want to know how specifically make my video protected from downloading.
I have read many questions and answers for the same topic but non of them explained how to specifically do this and all answers talk about but a video link in external JavaScript file and I tried many ways to do so but it isn't working.
How to overcome this issue with Videojs video player plugin?
This question comes up a lot. You need to understand there is no difference from the servers perspective from download to play, or download to store. If you prevent somebody from download, you also prevent them from watching, which is the same as not not putting the video on the internet. You do have the option of using DRM, But its very complicated to use, and would be best if you just contacted a vendor or supplier to do it for you.

How to get the RTMP & stream name from this URL? [closed]

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I am trying to get the RTMP & stream name of the top JW PLAYER that shows up When you open this link: LINK
I have tried everything but I am unable to get it, can someone please help me with this.
My ultimate goal is to be able to grab that stream and put it in my own JWPLAYER,
thank you so much!
any info would really help guys
Your above stream link is http://fw01.livem3u8.me.totiptv.com/live//7f2989e3f87e4efdb36bac56b64dca62.m3u8?bitrate=800
That is working fine right now in VLC player. But for me it was total hit and trail.
What i did for this is I'm going to explain.
Download URL Helper from www.urlhelper.com/download.htm (trail version will work fine)
Install it and run it.
Click Options >> Select and select your network adapter.
Click OK.
Then click Start at toolbar (It starts watching your network traffic).
Run the page where stream is.
In a moment URL helper will start showing you some URLs.
On the bottom click "All" See here http://s22.postimg.org/9w61m07y9/Untitled.png
Copy the URL that is NOT shown as mp3.
If you are running only one stream there will be only one address shown multiple times.
Copy that URL. That's your stream link. That you can use to run on any player(Hopefully).!
I hope this will work for you as well.

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