I'm looking for a solution of capturing a Microphone on a website.
I would really like it to be open source and/or at least free (if I have to install a special server or what/not)
Quality of sound is the most important issue here.
This has already been asked: Is it possible to record sound with HTML5?
There is no real HTML/JavaScript solution yet. It can be done with Flash, however. If you want to do that, here's a good example and tutorial.
#Asaf well to add to already given flash solutions ,
Flash
http://sziebert.net/posts/server-side-stream-recording-updated/ . This solution uses Red5 and flash ( getMicrophone() call http://livedocs.adobe.com/flash/9.0/main/00001866.html ) .
Silve Light also has Sound Capturing facility . ref: https://twitter.com/chuckstar/status/10541469193
Java
There is a sample working code in Java which can record sound in Ogg file Fomrat , but i am not sure if it can work on websites http://code.google.com/p/mind-listening/source/browse/trunk/freemind/mind-listening/jorbis-0.0.15.jar?spec=svn37&r=37
Related
Firstly, as this is essentially a multi-disciplinary question, please feel free to submit answers which only answer one part of the post - I will upvote answers which satisfy any of the questions below.
Hi, we are putting together an installation in which:
Audio comes in through a microphone to an FM transmitter
Transmitted to receiver
Receiver is plugged into computer's Line In
Audio is recorded/streamed as an .m3u stream, or recorded, and then uploaded(?)
Stream is accessible by scanning QR code on iPhone/Android.
I have a few questions around the subject that I was wondering if people could help with.
This is kind of a minor first question, if you are able to answer the second question, but is the best way to deal with incoming audio to record it 'before' uploading it, resulting in a delay, or is it to stream it?
I'm not sure of the best way to host the upload, as I suppose that it would be either an .m3u stream or some kind of progressive .mp3 that would need to be uploaded somewhere that supported this. Any advice? Is this kind of thing possible with free webhosting solutions? It would preferably be above 128kbps, too.
Initially, I presumed that the easiest way to have an audio stream linked to a URL that allowed for QR code linking was to build a very simple webpage with a media player on it, so that the end user wouldn't have to download any external application, and it could be done through the Android/iPhone browsers. Is this the case? Is the easiest way of doing this with something like <video> or <audio>, or is the HTML5 support for the mobile browsers not yet good enough? What are the alternatives? Something like jPlayer looks like it would work?
Thank you for your responses, I can give any necessary technical information you may find relevant, but these are quite broad questions. We can run the stream from either OSX 10.7 or Windows 7, as we have both, so recommendations for suitable software for either platform are welcomed.
Thanks again!
EDIT: Information from jPlayer.org -
HTML5 Audio Streams
HTML5 browsers and their support for audio streams. (Note that, jPlayer's Flash fall-back for non-HTML5 browsers works with MP3 streams.)
Audio streams work on:
Firefox (OSX, Win): OGA
Safari (OSX): MP3
Mobile Safari (iOS4 iPad/iPhone/iPod): MP3
Opera (OSX, Win): OGA
Chrome (OSX, Win): MP3, OGA
IE9 (Win): MP3
No mention of iOS5 or Android, but I used my android phone to check out the jplayer 1.2 stream demo they have up on their site, and it works. Seems like this could be the answer, but I need to know a little more about hosting, and perhaps iOS5 compatibility, though I'm sure it must work going forward. Anyone?
I recommend going with a standard SHOUTcast/Icecast setup.
First, you need an encoder. I recommend Edcast if you're doing this under Windows. The encoder is responsible for listening to your sound card, and encoding/compressing the raw PCM data into MP3, or whatever format(s) you need.
Next, you need a server. Again, SHOUTcast or Icecast will work great for you. No, you typically cannot host this on any free web hosting provider. Fortunately, hosting for SHOUTcast streams is cheap, and readily available. You can also host the server yourself, if you have the necessary bandwidth. It doesn't take much CPU/RAM.
Finally, you need a player. Your jPlayer will work just fine. For iOS, I usually just link to the playlist file and let it play. On Android, you can do a Flash player. HTML5 compatibility is there though, and jPlayer would be the way to do it.
Also note that there is no such thing as a ".m3u stream". A .m3u file is nothing but a playlist file, that contains the URL to the streaming audio. That's all.
For the QR code, just link to a web page URL that contains your player. That's all you have to do.
If you have more specific questions as you go, you should post them as separate questions here.
I know that i have to use gstreamer for creating an application to capture photo and videos
from web cam. But, i could not find any documentation describing vividly the steps for creating the
same. It will be very pleased,if any one could helped me in this.
Regards,
iSight
There is a GNOME/vala tutorial in the work that shows you how to make a Gtk application to grab pictures:
https://developer.gnome.org/gnome-devel-demos/3.10/magic-mirror.vala.html.en
Saving a video is left for you to do, you'll have to use a tee to have both live preview and recording simultaneously.
Also, there is a high-level object, camerabin, for your case, but I never used it myself.
Camerabin is being used by libcheese, that is even higher level and depends on Clutter (but not Gtk), and allows you to plug effects with cheese_camera_set_effect().
Pick what you need!
Well, I will try best not to make it as a 'I just want the code' question...
I'm recently working on a project which requires some audio signal processing from local music files (e.g. iTunes Library). The whole work includes:
Get the PCM data of an audio file (normally from iTunes library); <--AudioQueue (?)
Write the PCM data to a new file (it seems that Apple does not allow direct modification on music tracks); <--CoreAudio(?)
Do some processing and modification, like filters, manipulators, etc. <-- Will be developed in C++
Play the processed track. <--RemoteIO
The problem is, after going through some blogs and discussions:
http://lists.apple.com/archives/coreaudio-api/2009/Aug/msg00100.html, http://atastypixel.com/blog/using-remoteio-audio-unit/
http://osdir.com/ml/coreaudio-api/2009-08/msg00093.html
as well as the official sample codes, I got a feeling that the CoreAudio SDK allow us to apply audio processing only on voice demos recorded from Mic.
My question is that:
Can I get raw data from iTunes library tracks instead of Mic input?
If the first question is 'No', is there a way to 'fool' the SDK to let it think it is getting data from Mic input, not from iTunes? (I have done some similar 'hacking' stuff in C# before XD)
If the whole processing just doesn't work, can anyone provide some alternative ideas?
Any help will be appreciated. Thank you very much :-)
Thanks.
Just found something really cool yesterday.
From iPhone Media Library to PCM Samples in Dozens of Confounding, Potentially Lossy Steps
(http://www.subfurther.com/blog/?p=1103
And also a class library by MIT:
TSLibraryImport: Objective-C class + sample code for importing files from user's iPod Library in iOS4.
(http://bitbucket.org/artgillespie/tslibraryimport/changeset/a81838f8c78a
Hope they help!
Cheers,
Manca
1) No. Apple does not allow direct access to PCM data of songs. Otherwise you could create music-sharing apps, which is not in Apple's interests.
2) No. Hacking and getting approved is impossible due to Apple's code approval mechanism.
3) The only alternative I could think of is that you have to do the processing part on PC/Mac and then transfer it to the iPhone. Or you would have to store the files in your own applications folder - you should be able to load and process these via CoreAudio.
I know this thread is old but... did this work for you, Manca? And did this app get approved?
EDIT: just discovered the AVAssetReader class, introduced since iOS 4.1, should help
Hey, I'm new to this site. I think it is great! Okay, here's the deal. I just downloaded Smule Ocarina. I was wondering how they made it so you can upload a song to the cloud. I might have an app idea that might incorporate this. How would I do this? What would I need?
Well you would have to define a format to play a song, for example MIDI, so you can Upload a MIDI file, ( not very heavy ) to a database (like mySQL) , and then you can download it and play it back with a synthesizer or something similar. There are some open source mobile synths that I think could be able to play MIDI, but you would have to check that out.
Mobile Synth Open Source
I hope this helps you a bit, your question is very broad though, so there are lot of ways to accomplish your goal.
I am working on an application that will stream music from a server of mine from an iPhone application.
This is my first iPhone app so I am a bit confused :
What would be the best way to do
this?
Is there something already built in
that I could use, like a MP3 player
that I just need to point toward the
correct server?
Do I need a streaming server to do
so?
I'm relatively new to Objective-C/Cocoa (touch), but I have read an article on the cocoawithlove site titled "Streaming and playing an MP3 stream" and tested the sample code on my iPhone and it works perfectly. I don't know about the licensing or anything, if you would be able to use it, but I'm sure someone or even you can figure that out.
Sorry again for not being able to provide any more information or even a link. This is my first answer on SO and cannot post hyperlinks :(
(edit: Here's the link: Streaming and playing an MP3 stream)