问题
I want to capture the camera stream from an Android device and stream it to a server with RTMP (the server is out of my control). I have not figured out yet how to create a stream of data from the camera itself, but that is for a later concern.
At the moment there are two problems: I wish to support API 9+ and RTMP is not native supported by Android.
I've taken a look around and found this SO post Convert video Input Stream to RTMP and https://github.com/yixia/VitamioBundle. The former suggested a library that has little to no documentation. The latter probably supports it (?), but it requires API 14+.
Are there decent examples or libraries out there, that that supports RTMP streaming from an Android device? I've also read something about converting RTSP or FFMPEG, if that is a viable way then I guess it will suffice too.
Edit 1:
I've found this library (It has a lot of resemblance to the one mentioned above) and tried to work with. I imported it in Android Studio and wrote some code, but it appears to crash internally with a java.lang.NoClassDefFoundError RTSP Codec Factory error. So apparently that doesn't work too well on Android.
Also, I've encountered several times Adobe air. I do not want to code in Action Script 3 (AS3) as this library will just be a (small) part of a native app. If Adobe Air has a library which I am unaware of, then I would happily integrate it if that is possible.
回答1:
In the accepted answer of the question you linked someone suggests using JavaCV.
It requires API 8 or newer and features a FFmpegFrameRecorder class.
Link to github:
https://github.com/bytedeco/javacv
They even have a full sample of capturing flv (it's rather large so I won't paste it here): https://github.com/bytedeco/javacv/blob/master/samples/RecordActivity.java
In your case you probably need to replace:
private String ffmpeg_link = "/mnt/sdcard/stream.flv";
with
private String ffmpeg_link = "rtmp://<server>:<port>/stream";
回答2:
You should take a look at spydroid; it does exactly what you are looking for. Their website may be found here: https://code.google.com/p/spydroid-ipcamera/
They provide a library that you can use, along with an explanation of the various streaming options and some code examples. Said information may be found here: https://github.com/fyhertz/libstreaming
回答3:
If you can publish from your android device using a protocol supported by ffmpeg (see the list of protocols supported) you could use the following command to transmit the video to your server :
ffmpeg -re -i <input link> -vcodec h264 -ar 44100 -f flv "rtmp://<host>/<publication>"
来源：https://stackoverflow.com/questions/29018606/android-stream-camera-as-rtmp-stream