Can anyone tell me if it is possible to capture and process audio in realtime. Essentially I want to create an app that changes the pitch of a users voice and I'm not sure whether this is possible in phonegap or is it best to build in native code ie objective-c.
Thanks
Related
I'm trying to receive a live RTP audio stream in my iPhone but I don't know how to start. I'm seeking some samples but I can't find them anywhere.
I have a Windows desktop app which captures audio from the selected audio interface and streams it as ยต-law or a-law. This app works as an audio server that serves any incoming connection with that streaming. I have to say that I've developed an Android app that receives that stream and it works, so I want to replicate this functionality on iOS. In Android we have "android.net.rtp" package to manage this and transmit or receive data streams over the network.
Is there any kind of equivalent package for iOS to implement this? Could you give me any kind of reference / sample to do this, or just tell me where to start?
You can see this libraryHTTPLiveStreaming, But his protocol maybe is not standard one, You can check my fork aelam/HTTPLiveStreaming-1, I'm still working on it, it can be played by ffplay. You can try
check the file rtp.c in ffmpeg, I think it will help out
So with iOS 8, we can now record the screen of iOS devices. I've searched extensively and cannot find a way to detect, let alone prevent, this recording. The app I'm working on deals with some potentially sensitive information and images and would like to prevent this if at all possible.
Thank you in advance for your responses and insights!
Anthony
Apparently, there is some way to detect whether a display or QuickTime streaming is connected, because the Netflix app will show an error when that is the case (which also means you can't just use an iOS device and stream to your computer to watch it in big). The app works perfectly if QuickTime streaming is off with the cable is plugged in.
Maybe it just detects whether an external display is connected, and screen recording behaves like that, so basically you might have some success with these APIs and notifications.
Also, you could use an encrypted HTTP Live Stream according to Apple which would be blacked out in the stream / the recording.
I'm building an app in which I need to steam multiple tracks of audio that make up a song. They all need to be synchronized so the song plays back naturally.
I've been able to play back local multitrack audio very well with the solution on this thread: multi track mp3 playback for iOS application, but it looks like AVAudioPlayer isn't able to stream.
I've been looking into working with DOUAudioStreamer because I've read that it's the best solution for streaming audio on iOS without going pretty low-level, but it seems to lack the equivalent of a -playAtTime: method, which is how the tracks were synced up using `AVAudioPlayer.
Does anyone know a workaround for this using DOUAudioStreamer, or have any advice on another way I should approach this? Thanks.
Currently I am developing an IOS app.I need once I open the camera through application then when i say "start recording" then recording should start automatically. Once i say "Cut" then it should stop. and ask for save video share etc.
My main concern is regarding voice command. recording should start stop through voice command.
Looking forward for experts suggestions.
Many Thanks
As Siri is not yet exposed to developers there are lot of third party sdks dat can be used for recognizing speech.
I have used
http://dragonmobile.nuancemobiledeveloper.com/public/Help/DragonMobileSDKReference_iOS/Introduction.html
There are number of other sdks too ,u can easily google them
U have to set the words dat u want to recognize and perform intended action.
All d best with your app!!
I'd like to stream video from the camera on an iOS device to a receiver via wifi, in effect turning the device into a wireless webcam. Is there a way to build a small app that captures video input on an iOS app and sends it via an RTSP stream or similar?
As this is an ad hoc experiment, I'm not concerned about App Store guidelines and can jailbreak if necessary.
If I interpret your question correctly you more or less need to solve four problems:
Get the camera feed.
Convert/encode this to the right format.
Stream the data.
Prevent the phone from locking itself and going into deep sleep.
The first one is fairly simple and Apple has as always provided good documentation and examples -> API link. Make sure you check out their example in the end as you will get a CMSampleBufferRef data object back.
For the second and third part, you should check out the CFNetwork framework and specially CFFTPStream for streaming using FTP.
If your are only building this for yourself then you can always turn off the Auto-Lock feature in the settings. If you on the other hand would like to distribute this to other users you could use a trick to play a mute sound every 10 seconds. This is more or less how all the alarm clocks work in the App Store. Here's a tutorial. =)
I hope I helped a little bit at least.
Good luck and best regards!
I'm 70% of the way to doing the same thing. Here's how I did it:
Capture content from video input
Chop video into files for use in HTML Live Streaming.
Spin up a web server on the iPhone and make the video files available.
Connect to the IP address of the phone and viola! you've got live streaming video.
Last time I touched the code I was trying to debug my Live Streaming not working. I'll try and get my source code posted on github this weekend, if you'd like to take a look.