我有一个Codec，初始化如下：
private static final String MIME_TYPE = "video/avc";
MediaFormat format = MediaFormat.createVideoFormat(MIME_TYPE, width, height);
format.setInteger(MediaFormat.KEY_COLOR_FORMAT,MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface);
format.setInteger(MediaFormat.KEY_BIT_RATE, bitRate);
format.setInteger(MediaFormat.KEY_FRAME_RATE, FRAME_RATE);
format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, IFRAME_INTERVAL);
if (VERBOSE) Log.d(TAG, "format: " + format);
// Create a MediaCodec encoder, and configure it with our format. Get a Surface
// we can use for input and wrap it with a class that handles the EGL work.
mEncoder = MediaCodec.createEncoderByType(MIME_TYPE);
mEncoder.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
mInputSurface = mEncoder.createInputSurface();
mEncoder.start();
有了这个，我编码在Android Surface上绘制的内容。我一直在查看编码提供的输出缓冲区：
ByteBuffer[] encoderOutputBuffers = mEncoder.getOutputBuffers();
我无法理解它，它看起来已经转换为YUV，不知道具体的格式。
我渲染的曲面的像素格式是RGBA。
图像的RAW缓冲区看起来像这样，它有1536个元素，这是YUV图像的正确尺寸，因为连接到编码器的Surface是32 x 32。
[0,0,0,1,103,66,0,31，-38,37，-112,0,0,0,1,104，-50,6，-14,0,0， 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0，0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0，0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0，0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0，0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0，0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0，0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0，0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0，0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0，0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 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我的问题是，对于这种特殊情况，编码器的输出缓冲区包含的像素格式是什么？它是YUV图像，还是RAW H264？
答案 0 :(得分：1)
MediaCodec编码器的输出是H.264视频流。 （最初的0 0 0 1是赠品。）
您在数据之后看起来有大量零的原因是MediaCodec代码没有正确管理ByteBuffer属性，因此您不能依赖缓冲区属性来告诉您有多少数据。 MediaCodec BufferInfo对象具有实际数据长度，我希望它更短（它应该只覆盖非零部分）。
另见this page。