我尝试下面的代码重命名文件。它适用于内部存储,但不适用于可移动的SD卡文件。我需要重命名可移动SD卡上的文件以删除文件名中的空格和特殊字符,因为我正在使用fmpeg命令削减视频。
File from = new File(originalpath);
String rename=originalpath.replace(" ", "").replace("-","").replace(",","").trim();
File to = new File(rename);
Boolean result= from.renameTo(to);
OR
File from = new File(originalpath);
File to=new File((Environment.getExternalStorageDirectory()),"gvideo.mp4");
Boolean result2= from.renameTo(to);
它们都给出结果错误
添加有关command-
的详细信息execFFmpegBinary("-i " + from.getAbsolutePath() + " -ss " + startMs / 1000 + " -to " + endMs / 1000 + " -strict -2 -async 1 " + dest.getAbsolutePath());
private void execFFmpegBinary(final String command) {
try {
ffmpeg.execute(command, new ExecuteBinaryResponseHandler() {
@Override
public void onFailure(String s) {
Log.e("Previewragment", "FAILED with output : " + s);
}
@Override
public void onSuccess(String s) {
Log.e("Previewragment", "SUCCESS with output : " + s);
}
@Override
public void onProgress(String s) {
Log.e("Previewragment", "Started command : ffmpeg " + command);
Log.e("Previewragment", "progress : " + s);
}
@Override
public void onStart() {
Log.e("Previewragment", "Started command : ffmpeg " + command);
}
@Override
public void onFinish() {
Log.e("Previewragment", "Finished command : ffmpeg " + command);
}
});
} catch (FFmpegCommandAlreadyRunningException e) {
// do nothing for now
}
}
失败讯息 -
FAILED with output : WARNING: linker: /data/data/xyz/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
built on Oct 7 2014 15:11:41 with gcc 4.8 (GCC)
configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/i686-linux-android- --arch=x86 --cpu=i686 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --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/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/x86 --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -march=i686' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
libavutil 54. 7.100 / 54. 7.100
libavcodec 56. 1.100 / 56. 1.100
libavformat 56. 4.101 / 56. 4.101
libavdevice 56. 0.100 / 56. 0.100
libavfilter 5. 1.100 / 5. 1.100
libswscale 3. 0.100 / 3. 0.100
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 0.100 / 53. 0.100
"/storage/emulated/0/Movies/m_ASUS_Display_Demo.mp4": No such file or directory
添加了完整的方法 -
private void executeTrimCommand(int startMs, int endMs) {
File moviesDir = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_MOVIES
);
String filePrefix = "guggu";
String fileExtn = ".mp4";
String fileName = filePrefix + fileExtn;
File from = new File(path);
try {
dest = new File(moviesDir, filePrefix + "_1" + fileExtn);
if (dest.exists()) {
dest.delete();
}
String command = String.format("-i \"%s\" -ss %d -to %d -strict -2 -async 1 \"%s\" ",path,startMs / 1000 , endMs / 1000, dest.getAbsolutePath());
execFFmpegBinary(command);
} catch (Exception e) {
Log.e("Previewragment", e.toString());
e.printStackTrace();
}
}
答案 0 :(得分:1)
对于问题中的注释,String formatter的用法:
String command = String.format("-i \"%s\" -ss %d -to %d -strict -2 -async 1 \"%s\" ",to.getAbsolutePath(),startMs / 1000 , endMs / 1000, dest.getAbsolutePath());
答案 1 :(得分:0)
您的问题是,在shell的上下文中,从Environment.getExternalStorageDirectory()
返回的路径将引发文件或目录不存在的错误。
您需要更改发送的所有文件路径以在shell中运行。这是一个静态工厂方法,您可以使用它来获取正确的文件:
/**
* The external storage path is not readable by shell or root. This replaces {@link
* Environment#getExternalStorageDirectory()} with the environmental variable
* "EXTERNAL_STORAGE"
*
* @param file
* The file to check.
* @return The original file (if it does not start with {@link
* Environment#getExternalStorageDirectory()})
* or a file with the correct path.
*/
@SuppressLint("SdCardPath")
public static File fileForShell(File file) {
String externalStorage = Environment.getExternalStorageDirectory().getAbsolutePath();
if (!file.getAbsolutePath().startsWith(externalStorage)) {
return file;
}
String legacyStorage = System.getenv("EXTERNAL_STORAGE");
String path;
if (legacyStorage != null) {
path = file.getAbsolutePath().replaceFirst(externalStorage, legacyStorage);
} else {
path = file.getAbsolutePath().replaceFirst(externalStorage, "/sdcard");
}
return new File(path);
}
创建命令时,只需使用上述方法即可获得正确的文件路径。
File from = ...
File fileToUseInCommand = fileForShell(from);
...