大转换3GP文件转换成字节数组 [英] Convert large 3gp files into byte array

问题描述

我试图转换较大的3GP文件（> 25MB比），以字节数组，但它给了内存不足exception.i是能够将小于25 MB的3GP文件的字节数组。

文件文件1 =新的文件（Environment.getExternalStorageDirectory（）+1.3gp）;

 的FileInputStream FIS = NULL;

            尝试 {
                FIS =新的FileInputStream（文件1）;

            }赶上（FileNotFoundException异常E）{
                // TODO自动生成的catch块
                e.printStackTrace（）;
            }
            ByteArrayOutputStream BOS =新ByteArrayOutputStream（）;
              尝试 {
                而（fis.available（）大于0）{
                        bos.write（fis.read（））;
                       }
            }赶上（IOException异常E1）{
                // TODO自动生成的catch块
                e1.printStackTrace（）;
            }



           字节[]字节= bos.toByteArray（）;


            文件someFile =新的文件（Environment.getExternalStorageDirectory（）+/output.txt）;


            FileOutputStream中FOS = NULL;

            尝试 {
                FOS =新的FileOutputStream（someFile）;

            }赶上（FileNotFoundException异常E）{
                // TODO自动生成的catch块
                e.printStackTrace（）;
            }
            尝试 {
                fos.write（字节）;

            }赶上（IOException异常E）{
                // TODO自动生成的catch块
                e.printStackTrace（）;
            }
            尝试 {
                fos.flush（）;

            }赶上（IOException异常E）{
                // TODO自动生成的catch块
                e.printStackTrace（）;
            }
            尝试 {
                fos.close（）;

            }赶上（IOException异常E）{
                // TODO自动生成的catch块
                e.printStackTrace（）;
            }

        ////
 

1. 如何大3GP文件转换成字节组。
2. 在给一个适当的例子或方法。

解决方案

设置虚拟机上的 -Xmx 选项用来运行程序到更大的价值给它更多的内存的工作。

您可以做，作为一个命令行选项，如果直接运行程序，或者在您的IDE项目的设置，如果从IDE运行它。

I am trying to convert large 3gp file(>than 25mb) to byte array but it gives outofmemory exception.i am able to convert less than 25 mb 3gp file to bytearray.

File file1 = new File (Environment.getExternalStorageDirectory() + "1.3gp");

            FileInputStream fis = null;

            try {
                fis = new FileInputStream(file1);

            } catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
              try {
                while (fis.available() > 0) {
                        bos.write(fis.read());
                       }
            } catch (IOException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }



           byte[] bytes = bos.toByteArray();


            File someFile = new File (Environment.getExternalStorageDirectory()+ "/output.txt");


            FileOutputStream fos = null;

            try {
                fos = new FileOutputStream(someFile);

            } catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            try {
                fos.write(bytes);

            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            try {
                fos.flush();

            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            try {
                fos.close();

            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

        ////

1. how to convert the large 3gp file into bytearray.
2. give a proper example or method.

解决方案

Set the -Xmx option on the virtual machine being used to run the program to a larger value to give it more memory to work with.

You can do that as a command line option if running the program directly, or as a setting on the project in your IDE if running it from an IDE.

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