FFmpeg Android 连接。 “–safe 0”是无效参数
FFmpeg Android concat. "–safe 0" is an invalid argument
我正在尝试在 Android 上附加两个 .mp4 视频。使用命令出现不安全文件名错误后:
String[] complexCommand = {"ffmpeg", "-f", "concat", "-i", list, "-c", "copy", outputFilePath};
我按照 FFmpeg 文档中的建议添加了字符串“–safe 0”:
String[] complexCommand = {"ffmpeg", "-f", "concat","–safe 0", "-i", list, "-c", "copy", outputFilePath};
但是,FFmpeg 无法识别该命令,并给出此错误消息:
Failure with output
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 ‘–safe 0'.
Error splitting the argument list: Option not found
我已经尝试过使用短划线 (–) 和 (-) 类型的各种排列,但仍然出现错误。有时,使用某个破折号或根本不使用破折号 returns 会出现稍微不同的错误消息:
Failure with output
I/System.out: ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
I/System.out: built with gcc 4.8 (GCC)
I/System.out: 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=
I/System.out: 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
Input #0, tty, from '/data/user/0/com.example.cameraapp2/cache/ffmpeg-list1251307830.txt':
Duration: 00:00:00.04, bitrate: 28 kb/s
Stream #0:0: Video: ansi, pal8, 640x400, 25 fps, 25 tbr, 25 tbn, 25 tbc
[NULL @ 0xed834600] Unable to find a suitable output format for 'ffmpeg'
ffmpeg: Invalid argument
然而,我在那里所做的修改(例如删除 "ffmpeg"
)并没有解决问题。
字符串 list
是文本文件的绝对路径,由我复制的用户 Marc Plano-Lesay 编写的代码生成:
private static String generateList(String[] inputs) {
File list;
Writer writer = null;
try {
list = File.createTempFile("ffmpeg-list", ".txt");
writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(list)));
for (String input: inputs) {
writer.write("file '" + input + "'\n");
}
} catch (IOException e) {
e.printStackTrace();
return "/";
} finally {
try {
if (writer != null)
writer.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
这里是引用它的相关代码片段:
inputFilePath1 = "/storage/emulated/0/Pictures/MyCameraApp/VID_20200416_162058.mp4";
inputFilePath2 = "/storage/emulated/0/Pictures/MyCameraApp/VID_20200418_104909.mp4";
String list = generateList(new String[] {inputFilePath1, inputFilePath2});
Android 通常可以很好地找到输入文件,所以我不确定还可以尝试什么。上面的错误消息证实了我的假设,即我是 运行 FFmpeg 0.3.1,应该是最新的。
感谢您的帮助。
将选项和值分开,即 "–safe", "0"
使用连字符,而不是破折号。
正确:-safe
不正确:–safe
我正在尝试在 Android 上附加两个 .mp4 视频。使用命令出现不安全文件名错误后:
String[] complexCommand = {"ffmpeg", "-f", "concat", "-i", list, "-c", "copy", outputFilePath};
我按照 FFmpeg 文档中的建议添加了字符串“–safe 0”:
String[] complexCommand = {"ffmpeg", "-f", "concat","–safe 0", "-i", list, "-c", "copy", outputFilePath};
但是,FFmpeg 无法识别该命令,并给出此错误消息:
Failure with output
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 ‘–safe 0'.
Error splitting the argument list: Option not found
我已经尝试过使用短划线 (–) 和 (-) 类型的各种排列,但仍然出现错误。有时,使用某个破折号或根本不使用破折号 returns 会出现稍微不同的错误消息:
Failure with output
I/System.out: ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
I/System.out: built with gcc 4.8 (GCC)
I/System.out: 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=
I/System.out: 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
Input #0, tty, from '/data/user/0/com.example.cameraapp2/cache/ffmpeg-list1251307830.txt':
Duration: 00:00:00.04, bitrate: 28 kb/s
Stream #0:0: Video: ansi, pal8, 640x400, 25 fps, 25 tbr, 25 tbn, 25 tbc
[NULL @ 0xed834600] Unable to find a suitable output format for 'ffmpeg'
ffmpeg: Invalid argument
然而,我在那里所做的修改(例如删除 "ffmpeg"
)并没有解决问题。
字符串 list
是文本文件的绝对路径,由我复制的用户 Marc Plano-Lesay 编写的代码生成:
private static String generateList(String[] inputs) {
File list;
Writer writer = null;
try {
list = File.createTempFile("ffmpeg-list", ".txt");
writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(list)));
for (String input: inputs) {
writer.write("file '" + input + "'\n");
}
} catch (IOException e) {
e.printStackTrace();
return "/";
} finally {
try {
if (writer != null)
writer.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
这里是引用它的相关代码片段:
inputFilePath1 = "/storage/emulated/0/Pictures/MyCameraApp/VID_20200416_162058.mp4";
inputFilePath2 = "/storage/emulated/0/Pictures/MyCameraApp/VID_20200418_104909.mp4";
String list = generateList(new String[] {inputFilePath1, inputFilePath2});
Android 通常可以很好地找到输入文件,所以我不确定还可以尝试什么。上面的错误消息证实了我的假设,即我是 运行 FFmpeg 0.3.1,应该是最新的。
感谢您的帮助。
将选项和值分开,即 "–safe", "0"
使用连字符,而不是破折号。
正确:-safe
不正确:–safe