FFmpeg错误输出文件#0不包含任何流

Question

下面是我的代码

String[] cmd = {"ffmpeg -ss 0 -i "+mPath+" -t 30 -c copy "+ (Environment.getExternalStorageDirectory().getAbsolutePath()+"/sample.mp4")};
executeCommand(cmd);

函数executeCommand

void executeCommand(String[] cmd) {
    try {
        fFmpeg.execute(cmd, new FFmpegExecuteResponseHandler() {
            @Override
            public void onSuccess(String message) {
                Toast.makeText(VideoFullScreen.this, "finished :" + message, Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onProgress(String message) {

            }

            @Override
            public void onFailure(String message) {
                Log.e("Error",message);
            }

            @Override
            public void onStart() {

            }

            @Override
            public void onFinish() {

            }
        });
    } catch (FFmpegCommandAlreadyRunningException e) {
        e.printStackTrace();
    }
}

误差

libavdevice 57。0.101/57。0.101

libavfilter 6。31.100/6。31.100

libswscale 4。0.100/4。0.100

输出#0，mp4，到'ffmpeg-ss 0-I/storage/emulated/0/video/demo.mp4-t 30-c copy/storage/emulated/0/sample.mp4':

输出文件#0不包含任何流

Answer 1

这是对我自己问题的回答

我的问题出在我传递的命令字符串数组中

这个答案是给那些都在FFMPEG中面临类似问题的人的

String[] cmd = {"-ss", "0", "-i" ,input_video_path, "-t" ,"30", "-c", "copy",output_video_path};