I want to create a real-time audio-calling application with nodejs. It will have a feature like Omegle (randomly) but only audio calling. A user also should be able to call people who he/she talked to before.
I found that Twillo and other sites have services like this but I want it to be free. Could you please suggest to me what to use and how to implement it? Any links or videos? Thanks!
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I know this is a very broad question, but my main focus is about the video hosting/playing part. For example for real-time video streaming we can use WebRTC or for livechat systems using Socket.IO is a common choice maybe.
But I have no idea how to create a video hosting/playing website like Youtube, Instagram or Coursera? I mean a website that users can upload videos and other users can watch it.
What libraries should I use for this purpose in both Front-End(Flutter) and Back-End(NodeJS) side?
What specific requirement is also needed for such a website? I mean maybe special type of servers/hosting services? Etc.
I want to be able to capture both parties speech to text continuously in a call and send those strings off to be translated in real-time and then use twiml.say to speak the text back. I have not been having much luck with this and wondering how I should go about doing this.
The one user will make a call from their phone to the other support person which is at a web browser. I have the call setup and working fine, however I cannot find any documentation anywhere that is aligned with what I am wanting to do and wondering if it is possible or if I need to be looking down a different route.
Should anyone have any advice or has seen samples similar to this I would love to see them. Thanks!
Twilio developer evangelist here.
It's not currently possible to capture a two legged conversation with <Gather> and speech recognition. So you might need to look somewhere else for this functionality.
What technologies are available to accomplish audio streaming between browsers without the need for additional software?
I have tried Lync Server which doesn't support audio/video, WebRTC which is not supposed by IE and now I am trying Silverlight but it's not really well at all.
Anyone else know of any other ways?
Thanks a lot!
You can read here for starter: How to embed a web conference room into web application?
There are providers out there that will sort this out for you but if you want open source/free it is likely to be based on WebRTC.
You can also use Flash if you want browser coverage but providing code for that is beyond the scope of stackoverflow however Google can help you find a proper solution (you will most likely need a server like Wowza)
I am thinking on how to build an spotify app that does beat detection (extract bpm of a song).
For that I need to access the raw audio, the waveform, and analyze it.
I am new to building spotify apps.
I know that with "libspotify" you can access raw audio. Can you do the same through the spotify apps API? And how?
For the record, currently exist two spotify apps apis:
Current
Preview
Unless you're really keen on writing that beat detection code yourself, you should look at the APIs provided by the EchoNest, which include that (and many other awesome things).
see Getting the tempo, key signature, and other audio attributes of a song
In a word: no. That isn't currently available in the Apps API.
There’s a new endpoint I guess. See an example https://medium.com/swlh/creating-waveforms-out-of-spotify-tracks-b22030dd442b?source=linkShare-962ec94337a0-1616364513
That uses the endpoint https://developer.spotify.com/documentation/web-api/reference/tracks/get-audio-analysis/
Edit: I agree with commenter #wizbcn that this does not answer this question. Is it sort of incorrect to leave it here because I found this SO post while searching for info about visualizing the tack's waveform as in the linked article? Maybe I should make this a comment instead?
I'm doing a language web site for my university language center, where students login and see videos to learn English. i have to do it like this,
person is logging in to the system, search using a search area and find the details,lessons and videos relevant to that videos. this functionality exactly matches the youtube scenario.
for implementing twitter like functionality we can use status-net, is there a similer library, statusnet like famous implementation for youtube or a some kind of platform or a framework like codeigniter that we can use to implement youtube like site very easily??
please suggest some options?? a open source one or a commercial one ???
and what is the best video format to use in a such web site?? flv?? mp4?? or mov???
regards,
Rangana
Your best option is to use a 'cloud' based video processing service. Most have a sample project / library for many different languages and frameworks. Here is a list of a few I've tried and liked:
http://zencoder.com/
http://transloadit.com/
http://pandastream.com/
The typical steps involve uploading the video files to a large 'cloud' static asset host (such as S3) through the browser. If you are inexperienced it is best to select a processor that provides an uploader (it will handle putting the files in the right spot). Of the three, Transloadit and Panda both have custom unloaders.
Usually the service will allow you to either pass the encoding settings (what formats and qualities to) output to as parameters or configure them in your account. To support all current HTML5 browsers you just need H264 (.m4a) and OGG (.ogv). However, the new trend in the video world is for WEBM (.webm) so you might want to include it as well.
Next you will receive a unique code from the web service that you must store in persistent storage (database). The web service can be configured to 'callback' (perform an HTTP POST or GET request to your service) once the video is encoded.
Once your recieve a callback you can activate your video and start dislpaying it on your pages. For displaying, if you are inexperienced I'd highly recommend you use one of the following players:
http://sublimevideo.net/
http://longtailvideo.com/
http://videojs.com/
They all do similar things for different prices. My current personal favourite is Sublime Video (it offers cool light box effects and a gorgeous player).
Why do you have to re-implement Youtube when you can just use it for hosting your videos for free? Many online e-learning portals (e.g. Khan academy) do exactly that.
As far as the best video format to use -- go read about H.264/AVC. It's what Youtube currently uses.
I think you will not find already built solution ;)
But it's not really that hard. You can use existing frameworks that will make your life easier while you build account management system, the rest shouldn't be really that hard (assuming you don't really want to re-build the whole Youtube ;D ).
For playing videos, you can use JW Player. A great piece of software, you should check it out.