I've been developing an iPhone application that streams audio using Matt Gallagher's audio streamer found here: GitHud: AudioStreamer
However, I'm having some problems when the iPhone loses internet connection because the stream cuts out and doesn't reconnect until the user actually presses the play button again. I've even tried using the reachability classes from Apple to try and automatically stop and reconnect the stream but this isn't working 100%.
I've been reading around on the internet and I've found something called HTTP Live Streaming that can supposedly be used to stream audio on the iPhone. However, I can't seem to find any examples of how to use this, therefore can anyone help me by given a brief description any any source that might help to get this working please?
Thanks in advance,
Luke
Not enough detail for me to answer this entirely, but I use a set of calls
to be notified of reachability changes.
When I get a failure, I change the play image to stop.
I then wait for a notification that the network is back
and then programmatically press play for the user.
Related
I'd like to record what the iPhone is currently outputting. So I'm thinking about recording audio from Apps like Music (iPod), Skype, any Radio Streaming App, Phone, Instacast... I don't want to record my own audio or the mic input.
Is there an official way to do this? How do I do it? It seems like AVAudioRecorder does not allow this, can somebody confirm?
Officially you can't. The audio stream belongs to the app playing it ,and iOS.
The Sandbox paradigm means that a resource owned by your App can't be used by another App. Resource here means Audio/Video stream or file. Exceptions are when a mediator like Document interaction controller are used.
If you want to do this you'd have to start with deducing AVFoundation's private methods and find out if theres a way there. Needless to say this it wouldn't be saleable on the App store and will probably only be possible on a jailbreak.
Good Luck.
TLDR;
This is only feasible only from time to time, as it's a time expensive process.
You can record the screen while listening your songs on Spotify, Music or whatever music application.
This will generate a video on your Photos application. That video can be converted on MP3 from your computer.
Actually, this is not true. The screen recordings will not actually have the audio from Apple Music at all, as it blocks it. Discord also uses this pipe as well, so you cannot record Discord audio either this way.
So generally, I want to make an app which has video chat functionality for iPhone. But after many searches, I am still not able to find any successful results. Is there any public or even for that matter, private API available for doing this on iPhone??? If you have an YES answer, please help me.
Basically, what I want is to read the streams of the video on both the devices connected for chatting. Thanks a lot in advance and please help me if you can.
p.s - I have already checked iDoubs but it failed and always shows some unknown problem and for that reason, doesn't allow me to connect to anyone.
ALSO : The suggested method I have found is via HTTP Live Streaming. But, in that too, I have multiple doubts.
1.) I need to find how do I upload my video from iPhone to the HTTP server from where I would be broadcasting?
2.) Can you please post something related to setting up the server? How do I feed the video to the FFMPEG Server?
Mainly, I need to find the upload method. I am right now simply sending hex-code in the form of NSDATA to the server and I am stuck there. The main problem is, It is live. How do I handle that?
It would be best, if you could help me make the iDoubs work properly.
Thank you so much for any kind of support!
have a look on this how to implement video chat in iphone But before starting you must have a IMS server up & running.
here is the live video chat framework what you are looking for. Its easy and simple to implement for face to face video chat. I have already tried this. Its working very fine. Great thing about this framework is multiple platform support.
Tokbox : https://tokbox.com/platform
https://tokbox.com/opentok/tutorials/
Sample Code:
https://github.com/opentok/opentok-ios-sdk-samples/
Edit:
Here is the article explaining opentok using parse.
http://www.iphonegamezone.net/ios-tutorial-create-iphone-video-chat-app-using-parse-and-opentok-tokbox/
HTTP live streaming is primarily an approach for adaptive streaming from server-to-client. For client-to-server rather go for traditional streaming. There exists an open library for streaming, see this question.
Whilst it is possible to facetime to do two-way chat, it is not certain that you will be able to using public iOS APIs. That said, I have implemented one-way live streaming for iPhone and the difficult part was not the core streaming itself, but encoding of the payload. You will be able to do H264 in hardware and AAC / iLBC in software.
How you want to feed this to the FFMPEG depends on your transport, possibly changing from 'file' H264 frames to 'streaming' H264. Check out the H264 frame types if you implement frame dropping; reconfiguring the H264 encoder on-the-fly is not possible to my knowledge, but restarting with fresh parameters typically does not take more than a second or so.
Did you attempt to play back a live resource while capturing? That is a good starting point. If you come across an open API for H264 encoding, please post it here ;-)
So my application for iphone4 reads data from the accelerometer and sends it to another application via tcp sockets. I need my app to work in background mode, so what I did was:
I put an mp3 file in the application's Documents folder
I used AVAudioPlayer library to play the file in a loop. It works.
I edited Info.plist and added option "required background
modes" with "audio" on.
Still, the scheduler suspends the application whenever I press the iphone's home button. Is there anything I missed?
I read apple's documentation, but I didn't find a solution. A few thoughts on this:
do I have to edit appDelegate.m?
is it because I use AVAudioPlayer instead of the iPod?
is it because I play an audio file from the application documents
folder?
I read about one person changing iOS Development Target from 4.0 to
3.2.1, but that didn't work for me.
And finally, say I get this to work, would the application still be getting data from the accelerometer?
On a side note, I don't want to submit the application to the App Store.
No, you will not receive accelerometer notifications in background mode. As far as I know, it is not possible. Check Executing Code in Background.
If you read the docs carefully, you will know that the whole background code model is based on responding to specific events (location and voip modes).
As for the audio mode here is an extract from Apple:
Your application should limit itself to doing only the work necessary
to provide data for playback while in the background. For example, a
streaming audio application would download any new data from its
server and push the current audio samples out for playback. You should
not perform any extraneous tasks that are unrelated to playing the
content.
Not sure whether you have solved your issue or not since this question was posted more than one year ago. Also, not sure whether playing audio is a must in your app or not. If both answers are no, my recent investigation may help a bit.
Here are how I get my app getting accelerometer data at the background
1. Follow this tutorial http://mobile.tutsplus.com/tutorials/iphone/ios-multitasking-background-location/ to get the background location working.
2. Follow this tutorial http://jonathanhui.com/ios-motion to get the accelerometer working.
Then you can get an app collecting accelerometer data at the background. Hope this helps.
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.
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)