使用 Xuggler 将 MXF 转为 FLV

Question

我正在尝试使用 Xuggler 将 mxf 文件转码为 flv 类型。

但我遇到了这个异常 -

2011-09-23 11:48:06,328 [main] WARN  com.xuggle.xuggler - Got error: picture is not of the same PixelType as this Coder expected (../../../../../../../csrc/com/xuggle/xuggler/StreamCoder.cpp:1204)

我的代码非常简单，看起来像这样 -

public static void main(String[] args) {

    // create a media reader
    IMediaReader mediaReader = ToolFactory.makeReader(inputFilename);

    // create a media writer
    IMediaWriter mediaWriter = ToolFactory.makeWriter(outputFilename,
            mediaReader);

    // add a writer to the reader, to create the output file
    mediaReader.addListener(mediaWriter);

    // create a media viewer with stats enabled
    // IMediaViewer mediaViewer = ToolFactory.makeViewer(true);

    // add a viewer to the reader, to see the decoded media
    // mediaReader.addListener(mediaViewer);

    // read and decode packets from the source file and
    // and dispatch decoded audio and video to the writer
    while (mediaReader.readPacket() == null)
        ;

}

它适用于 MP4 和 MOV 类型等文件。

请任何指点。

由于没有人回复并且我找不到任何解决方案，我决定使用 Java 中的命令参数。

我尝试了这个，但出现错误 -

public class FfmpegCommandTest {

public static void main(String args[]) {

    String commandStr[] = { "ffmpeg -f dv -i \"C:\temp\0001NY.MXF\" -ar 44100 -v codec libx264 -maxrate 2000k -bufsize 2000k -vf scale=\"iw/2:ih/2\" -strict experimental -vstats_file \"C:\nasir\progress.txt\" \"C:\temp\0001NYoutput-short1.mov\"" };
    // print the command to execute
    for (String x : commandStr) {
        System.out.print(x + " ");
    }

    // execute ffmpeg with the command generated by the previous segment
    try {
        ProcessBuilder proc =  new ProcessBuilder(commandStr);
        proc.directory(new File("C:\temp"));
        //proc.command(commandStr);
        proc.start();

    } catch (IOException ex) {          
        ex.getMessage();
        ex.printStackTrace();
    }
}
}

错误是

    The system cannot find the file specified
    at java.lang.ProcessBuilder.start(Unknown Source)
    at com.xuggle.xuggler.demos.FfmpegCommandTest.main(FfmpegCommandTest.java:21)
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
    at java.lang.ProcessImpl.create(Native Method)
    at java.lang.ProcessImpl.<init>(Unknown Source)
    at java.lang.ProcessImpl.start(Unknown Source)

Answer 1

对于命令内容：使用 \"C:\\temp\\0001NY.MXF\" 而不是 \"C:\temp\0001NY.MXF\"。

请参阅双反斜杠。