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Programming language: Shell
Tags: Media    
Latest version: v0.3.0

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README

android-ffmpeg-with-rtmp

This repository contains script(s) to build ffmpeg for android with RTMP (and OpenSSL) support.

Instructions

  1. Install the Android NDK (tested with version r10).
  2. Ensure that cURL is installed.
  3. Ensure that pkg-config is installed.
  4. Clone this repository and cd into its directory.
  5. Run build.sh.
  6. Look in build/dist for the resulting libraries and executables.
  7. Look in build/build.log if something goes wrong.

For example:

$ git clone git@github.com:cine-io/android-ffmpeg-with-rtmp.git
$ cd android-ffmpeg-with-rtmp
$ ./build.sh

Notes

The first time you run the script, it will try to find the location where you've installed the NDK. It will also try to auto-detect your operating system and architecture. This process might take a minute or two, so the information will be saved into a configuration file called .build-config.sh which will be used on subsequent executions of the script.

The script is meant to be idempotent. However, should you want to start over from scratch, it's a simple matter of:

$ rm -rf src build .build-config.sh
$ ./build.sh

Android

To use ffmpeg with an Android app you will need to deploy the binaries along with the libraries. Here's a listing of the build/dist directory.

.
├── bin
│   ├── ffmpeg
│   ├── openssl
│   └── ssltest
└── lib
    ├── libavcodec-56.so
    ├── libavdevice-56.so
    ├── libavfilter-5.so
    ├── libavformat-56.so
    ├── libavutil-54.so
    ├── libcrypto.so
    ├── librtmp-1.so
    ├── libssl.so
    ├── libswresample-1.so
    └── libswscale-3.so

A simple way to deploy the binaries would be to archive (e.g. zip) these directories and copy the archive in a res/raw directory within the Android project. Then at runtime, unpack the archive into a directory accessible to the app and set the appropriate permissions, e.g. chmod 750 -R directory-name.

In order for the Android app to use the libraries the LD_LIBRARY_PATH must be set to the location where the libraries reside. For example:

// Change the permissions
Runtime.getRuntime().exec("chmod -R 0750 "+ abspath).waitFor();

//...

ProcessBuilder processBuilder = new ProcessBuilder(cmd);

final Map<String, String> environment = processBuilder.environment();

environment.put("LD_LIBRARY_PATH", context.getDir("lib", 0).getAbsolutePath());

Process process = processBuilder.start();

//...

Acknowledgements

Inspired by: openssl-android and FFmpeg-Android.

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