使用FFMpeg将音频文件从iPhone实时传输到互联网

Question

i am trying to live streaming some video content from iphone to the internet (or server). I have read the following post (http://stackoverflow.com/questions/4084811/iphone-http-live-streaming-without-any-server-side-processing)

And i understand i can first capture the images and audio into file then send it out to the internet. But i really have no idea how to start the work on constantly send out these video files.

I understand i can use ffmpeg to do the streaming part. after long researching i can only found a sample program called iFrameExtractor using FFmpeg library. But the sample only shows how to use ffmpeg to playback a video file, but no sample on how to use the live streaming function in ffmpeg...

Can anyone provide a direction or tutorial how to live streaming a video file using ffmpeg? or anyone can suggest other ways to solve this problem? i am sure lots of people want to know how to do that.

Answer 1

I have done a similar simple demo work, here is how it works:

iOS side
1. using ffmpeg or other sdk to capture small video file
2. send them to server with timestamp with order

server side
1. received file
2. convert them to ts format with a ts file
3. write a html to show ts file

how to view them
access that html with safari

Answer 2

For streaming, you might want to use ffserver . That's a command line tool released by the FFmpeg project and it handles streaming.

Answer 3

Not directly answering your question but have you considered NAT / firewall issues?

Even if you are able to successfully run a HLS (or whatever) server on your iPhone AND your phone is connected to the Internet, it does not necessarily mean the client can connect to it, because of NAT, firewalls etc. This is an important consideration if your iPhone app is going to be used over 3G.

You are probably better off writing a webserver to which the iPhone first uploads unprocessed video frames and then you transcode and run a Media server on your webserver. This would save iPhone's battery life, help avoid porting ffserver on iPhone (it's not easy), and of course allow you to deploy robust media servers on your webserver.