ffmpeg-android-maker

Here is a script that downloads the source code of FFmpeg library and assembles it for Android. The script produces shared libraries as well as header files. The output structure looks like this:

The actual content of all this directories depends on how the FFmpeg was configured before assembling. For my purpose I enabled only libavcodec, libavformat, libavutil and libswscale, but you can set your own configuration to make the FFmpeg you need. The version of FFmpeg here by default is 4.1.4 (but can be overridden). And the script expects to use at least Android NDK r19 (r20 also works ok). Starting with FFmpeg 4.1 and NDK r19 the whole process became much simpler.

Supported architectures

• armeabi-v7a
• arm64-v8a
• x86
• x86_64

Prerequisites

You have to define an environment variable ANDROID_NDK_HOME and set the correct path to your Android NDK.

How to use

Well, just execute the script :) Examine the output directory after.

And the actual Android app can be found here

Features

Setting your own FFmpeg version. You can actually override the version of FFmpeg used by the script. See details here.

Text relocations monitoring. After a build you can look into stats/text-relocations.txt file. That file lists all *.so files that were built and reports if they have text relocations. If you don't see any mentioning of 'TEXTREL' in the file, you are good. Otherwise, you will see exact binaries that have this problem.