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I want to convert any audio (mp3, wav, etc) to FLAC with pure JS as I can't use any third party tools. Is this possible? Ideally, I'd like to pipe it.
With pureJS, probably no. You'd need to at the least include some bindings for a C++ nodejs extension for encoding/decoding (like lameMP3).
You could create the bindings yourself if you're up for it using N-API
You could, of course, go the absolutely insane route and read the files into memory, convert the stream to a UInt32Array (or something), figure out how it's encoded, then convert it yourself with some algo.
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I have a large JSON file, about 100 MB in a folder. I'd like to manually inspect some attributes, and then add more attributes to some of the objects and finally save changes and get output a modified json file.
Can someone suggest me how to do that?
I wanted to try with vue.js framework but I'm not very expert. If you know a video tutorial about this, please let me know.
Is using vanilla JavaScript the right choice or not?
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I'm created a simple video-chat using javascript and WebRTC for do connection between users client i want to add posibility that users can use some custom filters like video effects and other related stuff,
i found some examples and are useful but all examples do modification using canvas api I mean the video-stream is proccesed then drawed in a canvas next reproccess for be sent as MediaStream obtained from it
i felt that all this step are redundant and i want to know if exists some way to manipulate video stream directically avoiding the use of canvas api ?
WebRTC-NV lists some use-cases related to that (such as background blurring) but there are no implementations yet so you'll have to go via canvas+captureStream.
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Is anyone aware of how http://www.freeformatter.com/xml-to-json-converter.html works. This is the best ever converter I came across. I want to use this logic in my project too, to parse xml responses to json.
Please help.
Like Quentin mentioned, freeformatter.com does not appear to be open source.
To address this issue GitHub user bramstein created a XSLT named XSLTJSON.
You can find it here https://github.com/bramstein/xsltjson
Note: The purpose of XSLT (Extensible Stylesheet Language Transformations) is to transform XML into other formats.
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Today I was inspecting the soundcloud source-html through chrome, but it only returned a basic(very small) html dom.
So I was wondering how do they generate their html?
I'm curious because soundcloud is a pretty big website and I doubt they generate all the html though javascript, but when I checked their javascript I could not find any <div tags or anything like that.
For larger dynamic websites usually a template framework is used like EJS - http://www.embeddedjs.com/
With templating you can embed JavaScript logic directly into the HTML so it changes and updates dynamically.
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Is there any JavaScript library for human body detection in images or video? I know OpenCV in C++ and Python, but I need it in JavaScript. There are also libraries for face detection, but I can't find any for the whole body.
Yes, there are JavaScript ports of OpenCV that perform object detection on images or videos in real-time: js-objectdetect (which contains an upper body classifier) and HAAR.js.
More classifiers can be found in the OpenCV distribution or on the internet, they just have to be converted into another format before they can be read by the JavaScript libraries.
You can also use the same C++ libraries integrated in a NPAPI, and then call for the C++ functions from your javascript code.