[英]camera2 api -> mediaCodec -> mediaMuxer -> mp4 file
I'm trying to get an mp4 file.我正在尝试获取 mp4 文件。 I shoot video using the camera2 api and can save this as an avc file using MediaCodec.我使用 camera2 api 拍摄视频,并且可以使用 MediaCodec 将其保存为 avc 文件。 But I do not understand how I can redo this code, for encoding into an mp4 file using MediaMuxer.但我不明白如何重做这段代码,以便使用 MediaMuxer 编码成 mp4 文件。 Sorry for my English, this is translated through a translator对不起我的英语,这是通过翻译翻译的
private class EncoderCallback : MediaCodec.Callback() {
override fun onInputBufferAvailable(codec: MediaCodec, index: Int) {
}
override fun onOutputBufferAvailable(
codec: MediaCodec,
index2: Int,
info: MediaCodec.BufferInfo
) {
outPutByteBuffer = mCodec!!.getOutputBuffer(index2)
val outDate = ByteArray(info.size)
outPutByteBuffer!![outDate]
try {
Log.i("EncoderCallBack", " outDate.length : " + outDate.size)
outputStream!!.write(outDate, 0, outDate.size)
} catch (e: IOException) {
e.printStackTrace()
}
mCodec!!.releaseOutputBuffer(index2, false)
}
override fun onError(codec: MediaCodec, e: MediaCodec.CodecException) {
Log.i("EncoderCallBack", "Error: $e")
}
override fun onOutputFormatChanged(codec: MediaCodec, format: MediaFormat) {
Log.i("EncoderCallBack", "encoder output format changed: $format")
}
}
after initializing MediaCodec, I record the video:初始化 MediaCodec 后,我录制视频:
var texture: SurfaceTexture = textureViewOver
texture.setDefaultBufferSize(320, 240)
surface = Surface(texture)
builder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW)
builder.addTarget(surface)
builder.addTarget(mEncoderSurface!!)
mCameraDevice.createCaptureSession(
mutableListOf(surface, mEncoderSurface),
object : CameraCaptureSession.StateCallback() {...
the muxer code is missing:缺少复用器代码:
override fun onOutputBufferAvailable(
codec: MediaCodec,
index2: Int,
info: MediaCodec.BufferInfo
) {
outPutByteBuffer = mCodec!!.getOutputBuffer(index2)
mediaMuxer?.writeSampleData(trackIndex, outPutByteBuffer, info)
mCodec!!.releaseOutputBuffer(index2, false)
}
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