这是我的新手，我需要将Srt（字幕文件）分成多个块。
例如：如果我有一个视频的字幕文件（60分钟）。然后，字幕文件应分为6个字幕文件，每个字幕文件为10分钟。
即6 X 10 = 60分钟
无论分钟如何，都需要分成6个块。
使用这些字幕时间/持续时间，我必须将视频分成相同的块。
我正在尝试这段代码，请您帮我一下如何计算时间并分成多个部分
我能够实现我需要多少分钟的卡盘操作，但是却陷入了如何从源文件中读取最大块时间并创建一个新文件的问题，然后如何从源文件的下一个十分钟开始下一个块文件。
import org.apache.commons.io.IOUtils;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.stream.Stream;
/**
* The class SyncSRTSubtitles reads a subtitles .SRT file and offsets all the
* timestamps with the same specific value in msec.
*
* The format of the .SRT file is like this:
*
* 123
* 00:11:23,456 --> 00:11:25,234
* subtitle #123 text here
*
*
* @author Sorinel CRISTESCU
*/
public class SyncSRTSubtitles {
/**
* Entry point in the program.
*
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
/* INPUT: offset value: negative = less (-) ... positive = more (+). */
long delta = (22 * 1000L + 000); /* msec */
/* INPUT: source & destination files */
String srcFileNm = "/Users/meh/Desktop/avatar.srt";
String destFileNm = "/Users/meh/Desktop/avatar1.srt";
/* offset algorithm: START */
File outFile = new File(destFileNm);
outFile.createNewFile();
FileWriter ofstream = new FileWriter(outFile);
BufferedWriter out = new BufferedWriter(ofstream);
/* Open the file that is the first command line parameter */
FileInputStream fstream = new FileInputStream(srcFileNm);
DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;
// List<String> doc = IOUtils.readLines(in, StandardCharsets.UTF_8);
String strEnd = null;
long diff = 0;
String line;
String startTS1;
try (Stream<String> lines = Files.lines(Paths.get(srcFileNm))) {
line = lines.skip(1).findFirst().get();
String[] atoms = line.split(" --> ");
startTS1 = atoms[0];
}
System.out.println("bolo:" +line);
System.out.println("startTS1:" +startTS1);
String startTS = null;
String endTS = null;
/* Read File Line By Line */
while ((strLine = br.readLine()) != null) {
String[] atoms = strLine.split(" --> ");
if (atoms.length == 1) {
//out.write(strLine + "\n");
}
else {
startTS = atoms[0];
endTS = atoms[1];
// out.write(offsetTime(startTS, delta) + " --> "
// + offsetTime(endTS, delta) + "\n");
strEnd = endTS;
}
}
try {
SimpleDateFormat dateFormat = new SimpleDateFormat("hh:mm:ss");
Date parsedendDate = dateFormat.parse(strEnd);
Date parsedStartDate = dateFormat.parse(startTS1);
diff = parsedendDate.getTime() - parsedStartDate.getTime();
} catch(Exception e) { //this generic but you can control another types of exception
// look the origin of excption
}
System.out.println("strEnd");
System.out.println(strEnd);
/* Close the input streams */
in.close();
out.close();
System.out.println(diff);
long diff1 =diff/6;
System.out.println(diff1);
long diff2= (diff1*6);
System.out.println(diff2);
System.out.println((diff / 3600000) + " hour/s " + (diff % 3600000) / 60000 + " minutes");
System.out.println((diff1 / 3600000) + " hour/s " + (diff1 % 3600000) / 60000 + " minutes");
System.out.println((diff2 / 3600000) + " hour/s " + (diff2 % 3600000) / 60000 + " minutes");
/* offset algorithm: END */
System.out.println("DONE! Check the rsult oin the file: " + destFileNm);
}
/**
* Computes the timestamp offset.
*
* @param ts
* String value of the timestamp in format: "hh:MM:ss,mmm"
* @param delta
* long value of the offset in msec (positive or negative).
* @return String with the new timestamp representation.
*/
private static String offsetTime(String ts, long delta) {
long tsMsec = 0;
String atoms[] = ts.split("\\,");
if (atoms.length == 2) {
tsMsec += Integer.parseInt(atoms[1]);
}
atoms = atoms[0].split(":");
tsMsec += Integer.parseInt(atoms[2]) * 1000L; /* seconds */
tsMsec += Integer.parseInt(atoms[1]) * 60000L; /* minutes */
tsMsec += Integer.parseInt(atoms[0]) * 3600000L; /* hours */
tsMsec += delta; /* here we do the offset. */
long h = tsMsec / 3600000L;
System.out.println(h);
String result = get2digit(h, 2) + ":";
System.out.println(result);
long r = tsMsec % 3600000L;
System.out.println(r);
long m = r / 60000L;
System.out.println(m);
result += get2digit(m, 2) + ":";
System.out.println(result);
r = r % 60000L;
System.out.println(r);
long s = r / 1000L;
result += get2digit(s, 2) + ",";
result += get2digit(r % 1000L, 3);
System.out.println(result);
return result;
}
/**
* Gets the string representation of the number, adding the prefix '0' to
* have the required length.
*
* @param n
* long number to convert to string.
* @param digits
* int number of digits required.
* @return String with the required length string (3 for digits = 3 -->
* "003")
*/
private static String get2digit(long n, int digits) {
String result = "" + n;
while (result.length() < digits) {
result = "0" + result;
}
return result;
}
}
请建议我该如何实现？
答案 0 :(得分：0)
您需要将文件解析两次：
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.List;
import org.apache.commons.io.FileUtils;
public class SplitSRTFiles {
/**
* Splits a SRT file in multiple files each containing an equal time duration.
* @param args
* [0] number of wanted chunks
* [1] source file name
* @throws IOException
*/
public static void main(String[] args) throws IOException {
int nrOfChunks = Integer.parseInt(args[0]);
File srtFile = new File(args[1]);
System.out.println("Splitting "+srtFile.getAbsolutePath()+" into "+nrOfChunks+" files.");
List<String> srcLines = FileUtils.readLines(srtFile);
long fileEndTime = lastEndTime(srcLines);
long msecsPerChunkFile = fileEndTime / nrOfChunks;
int destFileCounter = 1;
String[] fileNameParts = srtFile.getName().split("\\.");
File outFile = new File(fileNameParts[0] + destFileCounter + "." + fileNameParts[1]);
System.out.println("Writing to "+outFile.getAbsolutePath());
outFile.createNewFile();
FileWriter ofstream = new FileWriter(outFile);
BufferedWriter out = new BufferedWriter(ofstream);
for (String line : srcLines) {
String[] atoms = line.split(" --> ");
if (atoms.length > 1) {
long startTS = toMSec(atoms[0]);
// check if start time of this subtitle is after the current
// chunk
if (startTS > msecsPerChunkFile * destFileCounter) {
// close existing file ...
out.close();
ofstream.close();
// ... and start a new file
destFileCounter++;
outFile = new File(srtFile.getParent(), fileNameParts[0] + destFileCounter + "." + fileNameParts[1]);
System.out.println("Writing to "+outFile.getAbsolutePath());
outFile.createNewFile();
ofstream = new FileWriter(outFile);
out = new BufferedWriter(ofstream);
}
}
out.write(line + "/n");
}
out.close();
ofstream.close();
System.out.println("Done.");
}
/**
* Calculates the time in msec of the end time of the last subtitle of the
* file
*
* @param lines
* read from file
* @return end time in milliseconds of the last subtitle
*/
public static long lastEndTime(List lines) throws IOException {
String endTS = null;
for (String line : lines) {
String[] atoms = line.split(" --> ");
if (atoms.length > 1) {
endTS = atoms[1];
}
}
return endTS == null ? 0L : toMSec(endTS);
}
public static long toMSec(String time) {
long tsMsec = 0;
String atoms[] = time.split("\\,");
if (atoms.length == 2) {
tsMsec += Integer.parseInt(atoms[1]);
}
atoms = atoms[0].split(":");
tsMsec += Integer.parseInt(atoms[2]) * 1000L; /* seconds */
tsMsec += Integer.parseInt(atoms[1]) * 60000L; /* minutes */
tsMsec += Integer.parseInt(atoms[0]) * 3600000L; /* hours */
return tsMsec;
}
}
答案 1 :(得分：0)
我想出了一种将文件分成几块的方法，
public static void main(String args[]) throws IOException {
String FilePath = "/Users/meh/Desktop/escapeplan.srt";
FileInputStream fin = new FileInputStream(FilePath);
System.out.println("size: " +fin.getChannel().size());
long abc = 0l;
abc = (fin.getChannel().size())/3;
System.out.println("6: " +abc);
System.out.println("abc: " +abc);
//FilePath = args[1];
File filename = new File(FilePath);
long splitFileSize = 0,bytefileSize=0;
if (filename.exists()) {
try {
//bytefileSize = Long.parseLong(args[2]);
splitFileSize = abc;
Splitme spObj = new Splitme();
spObj.split(FilePath, (long) splitFileSize);
spObj = null;
} catch (Exception e) {
e.printStackTrace();
}
} else {
System.out.println("File Not Found....");
}
}
public void split(String FilePath, long splitlen) {
long leninfile = 0, leng = 0;
int count = 1, data;
try {
File filename = new File(FilePath);
InputStream infile = new BufferedInputStream(new FileInputStream(filename));
data = infile.read();
System.out.println("data");
System.out.println(data);
while (data != -1) {
filename = new File("/Users/meh/Documents/srt" + count + ".srt");
//RandomAccessFile outfile = new RandomAccessFile(filename, "rw");
OutputStream outfile = new BufferedOutputStream(new FileOutputStream(filename));
while (data != -1 && leng < splitlen) {
outfile.write(data);
leng++;
data = infile.read();
}
leninfile += leng;
leng = 0;
outfile.close();
changeTimeStamp(filename, count);
count++;
}
} catch (Exception e) {
e.printStackTrace();
}
}