MediaCodec sample code

最新推荐文章于 2024-05-31 22:09:27 发布

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本文介绍如何使用Android MediaCodec进行视频编码操作，包括将一系列Bitmap编码为H.264视频、编码摄像头数据等内容。提供了具体的代码示例和配置参数，如分辨率、比特率等。

1.简单的decoder和encoder

https://github.com/taehwandev/MediaCodecExample

2.encode a set of Bitmaps that I have into an h264

http://stackoverflow.com/questions/17096726/how-to-encode-bitmaps-into-a-video-using-mediacodec?rq=1

mMediaCodec = MediaCodec.createEncoderByType("video/avc");
mMediaFormat = MediaFormat.createVideoFormat("video/avc", 320, 240);
mMediaFormat.setInteger(MediaFormat.KEY_BIT_RATE, 125000);
mMediaFormat.setInteger(MediaFormat.KEY_FRAME_RATE, 15);
mMediaFormat.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatYUV420Planar);
mMediaFormat.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 5);
mMediaCodec.configure(mMediaFormat, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
mMediaCodec.start();
mInputBuffers = mMediaCodec.getInputBuffers();

ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream); // image is the bitmap
byte[] input = byteArrayOutputStream.toByteArray();

int inputBufferIndex = mMediaCodec.dequeueInputBuffer(-1);
if (inputBufferIndex >= 0) {
    ByteBuffer inputBuffer = mInputBuffers[inputBufferIndex];
    inputBuffer.clear();
    inputBuffer.put(input);
    mMediaCodec.queueInputBuffer(inputBufferIndex, 0, input.length, 0, 0);
}

3.编码camera

http://blog.youkuaiyun.com/dxpqxb/article/details/8805110

Android: MediaCodec视频文件硬件解码,高效率得到YUV格式帧,快速保存JPEG图片(不使用OpenGL)(附Demo)

https://www.polarxiong.com/archives/Android-MediaCodec%E8%A7%86%E9%A2%91%E6%96%87%E4%BB%B6%E7%A1%AC%E4%BB%B6%E8%A7%A3%E7%A0%81-%E9%AB%98%E6%95%88%E7%8E%87%E5%BE%97%E5%88%B0YUV%E6%A0%BC%E5%BC%8F%E5%B8%A7-%E5%BF%AB%E9%80%9F%E4%BF%9D%E5%AD%98JPEG%E5%9B%BE%E7%89%87-%E4%B8%8D%E4%BD%BF%E7%94%A8OpenGL.html