我正在尝试使用ffmepg压缩android中的视频。这是我的代码：
String[] cmd = {"-y -i" ,myVideo.getAbsolutePath().replaceAll(" ", "%20"),"-vf","-s 640x480","-threads 5","-preset ultrafast","-strict -2", (local_paths.getLocal_images() + File.separator + "test.mp4")};
FFmpeg ffmpeg = FFmpeg.getInstance(context);
try {
//Load the binary
ffmpeg.loadBinary(new LoadBinaryResponseHandler() {
@Override
public void onStart() {
}
@Override
public void onFailure() {
}
@Override
public void onSuccess() {
}
@Override
public void onFinish() {
}
});
} catch (FFmpegNotSupportedException e) {
// Handle if FFmpeg is not supported by device
}
try {
// to execute "ffmpeg -version" command you just need to pass "-version"
ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {
@Override
public void onStart() {
Log.e("FFmpeg", "onStart");
}
@Override
public void onProgress(String message) {
Log.e("FFmpeg", message);
}
@Override
public void onFailure(String message) {
Log.e("FFmpeg", message);
}
@Override
public void onSuccess(String message) {
Log.e("FFmpeg", message);
}
@Override
public void onFinish() {
Log.e("FFmpeg", "onFinish");
}
});
} catch (FFmpegCommandAlreadyRunningException e) {
e.printStackTrace();
// Handle if FFmpeg is already running
}
问题是我使用的几乎所有命令都会导致Unrecognized option错误：
> 07-04 11:31:21.471 24610-25450/com.network.imyth.network E/FFmpeg:
> onStart 07-04 11:31:22.091 24610-25460/com.network.imyth.network
> D/FFmpeg: Running publishing updates method 07-04 11:31:22.101
> 24610-24610/com.network.imyth.network E/FFmpeg: ffmpeg version n3.0.1
> Copyright (c) 2000-2016 the FFmpeg developers 07-04 11:31:22.101
> 24610-24610/com.network.imyth.network E/FFmpeg: built with gcc 4.8
> (GCC) 07-04 11:31:22.101 24610-24610/com.network.imyth.network
> E/FFmpeg: configuration: --target-os=linux
> --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi-
> --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot
> --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include
> -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib
> -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags= 07-04 11:31:22.101 24610-24610/com.network.imyth.network E/FFmpeg: libavutil 55.
> 17.103 / 55. 17.103 07-04 11:31:22.101 24610-24610/com.network.imyth.network E/FFmpeg: libavcodec 57.
> 24.102 / 57. 24.102 07-04 11:31:22.101 24610-24610/com.network.imyth.network E/FFmpeg: libavformat 57.
> 25.100 / 57. 25.100 07-04 11:31:22.101 24610-24610/com.network.imyth.network E/FFmpeg: libavdevice 57.
> 0.101 / 57. 0.101 07-04 11:31:22.101 24610-24610/com.network.imyth.network E/FFmpeg: libavfilter 6.
> 31.100 / 6. 31.100 07-04 11:31:22.101 24610-24610/com.network.imyth.network E/FFmpeg: libswscale 4.
> 0.100 / 4. 0.100 07-04 11:31:22.101 24610-24610/com.network.imyth.network E/FFmpeg: libswresample 2.
> 0.101 / 2. 0.101 07-04 11:31:22.101 24610-24610/com.network.imyth.network E/FFmpeg: libpostproc 54.
> 0.100 / 54. 0.100 07-04 11:31:22.101 24610-24610/com.network.imyth.network E/FFmpeg: Unrecognized option 'y
> -i'. 07-04 11:31:22.101 24610-24610/com.network.imyth.network E/FFmpeg: Error splitting the argument list: Option not found 07-04
> 11:31:22.101 24610-24610/com.network.imyth.network E/FFmpeg: ffmpeg
> version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
> built with gcc 4.8 (GCC)
> configuration: --target-os=linux
> --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi-
> --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot
> --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include
> -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib
> -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
> libavutil 55. 17.103 / 55. 17.103
> libavcodec 57. 24.102 / 57. 24.102
> libavformat 57. 25.100 / 57. 25.100
> libavdevice 57. 0.101 / 57. 0.101
> libavfilter 6. 31.100 / 6. 31.100
> libswscale 4. 0.100 / 4. 0.100
> libswresample 2. 0.101 / 2. 0.101
> libpostproc 54. 0.100 / 54. 0.100
> Unrecognized option 'y -i'.
> Error splitting the argument list: Option not found 07-04 11:31:22.101
> 24610-24610/com.network.imyth.network E/FFmpeg: onFinish
那么问题是什么我得到这个无法识别的选项错误拆分参数列表：未找到选项
即时使用此LIB ffmpeg-android-java
答案 0 :(得分：1)
尝试拆分你的参数。这应该有效：
String[] command = {"-y", "-i", "/path/to/your/video.mp4", "-vf", "-s", "640x480", "-threads", "5", "-preset", "ultrafast", "-strict", "-2", "/path/to/your/video_out.mp4"};