所以我正在尝试将我的编码缓冲图像写入输出流,但我无法在流中获取任何数据......谁能告诉我我做错了什么以及为什么我看不到任何输出?
我希望当我调用 write.encodeVideo 方法时,它将视频编码到我的 ByteArrayOutputStream 中......这个假设是错误的吗?
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
// video parameters
final int videoStreamIndex = 0;
final int videoStreamId = 0;
final long frameRate = DEFAULT_TIME_UNIT.convert(15, MILLISECONDS);
final int width = 512;
final int height = 254;
long nextFrameTime = 0;
// create a media writer and specify the output file
final IMediaWriter writer = ToolFactory.makeWriter("aaa.ogg");
IContainer ic = writer.getContainer();
ic.open(outputStream, writer.getContainer().getContainerFormat(), true, false);
ICodec codec = ICodec.guessEncodingCodec(null, null,"aaa.ogg", null, ICodec.Type.CODEC_TYPE_VIDEO);
// add the video stream
writer.addVideoStream(videoStreamIndex, videoStreamId, codec, width, height);
BufferedImage img = null;
try
{
img = ImageIO.read(new File("/home/jbkreme/aaa.png"));
}
catch (final IOException e)
{
e.printStackTrace();
}
for(int yy =0; yy < 2048-height; yy=yy+8)
{
nextFrameTime++;
BufferedImage frame = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
frame = img.getSubimage(0, yy, width, height);
BufferedImage frame2 = convertToType(frame, BufferedImage.TYPE_3BYTE_BGR);
//encode the video
writer.encodeVideo(videoStreamIndex, frame2, nextFrameTime, DEFAULT_TIME_UNIT);
nextFrameTime += frameRate;
}
writer.close();
outputStream.flush();
outputStream.close();