Call ffmepg binary on android(x86 emulator)

[tham]

Trying to call the ffmpeg binary on android x86 emulator, but the binary cannot start, it do not has any error messages either(connected to errorOccurred, readyReadStandardError, readyReadStandardOutput), all I can see are

D Audio_on_android_2: test_command "/data/user/0/org.qtproject.example/files/ffmpeg --help"
D Audio_on_android_2: qprocess_state_changed QProcess::Starting
D Audio_on_android_2: qprocess_state_changed QProcess::NotRunning
D Audio_on_android_2: qprocess_error QProcess::FailedToStart

What I have done:

1: I donwload the ffmpeg-master-android-clang.tar.xz from sourceForge
2: Unzip and add the .so files in Build steps->Build android apk->add additional libraries

libavcodec.so
libavdevice.so
libavfilter.so
libavformat.so
libavresample.so
libavutil.so
libswresample.so
libswscale.so

3. Add ffmpeg in to resource file

4. Copy ffmpeg to ffmpeg_path_

QString const app_location = QStandardPaths::writableLocation(QStandardPaths::StandardLocation::AppDataLocation);
ffmpeg_path_ = app_location + "/" + QFileInfo(source).fileName();

5. Call ffmpeg with help command

QString const command = QString("%1 --help").arg(ffmpeg_path_);
qDebug()<<__func__<<command;
process_->start(command);

Any process wrong?Thanks

[SGaist]

Hi,

It's likely a dependency issue. I suspect ffmpeg cannot find the librairies it depends on.

[tham]

@SGaist I guess in order to let the ffmpeg found the libraries, I cannot add the libraries like that. How could I tell the ffmpeg binary where to find the so files?

[SGaist]

I don't think you can use the LD_LIBRARY_PATH environment variable. So I would try to modify the rpath of the ffmpeg executable.

[tham]

@SGaist Do Android platform got tools like otool/install_name_tool ?

[SGaist]

Androïd is a Linux based OS.