C / C++ / MFC

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uiResult = AVIFileOpen(&pAVIFile,  AVIFileNameEtc.lpstrFile, OF_CREATE, NULL);<br />
if (uiResult != AVIERR_OK)<br />
	exit;<br />
<br />
memset(&AudioStreamInfo, 0, sizeof(AudioStreamInfo));<br />
<br />
// Fill in the header for the audio stream<br />
AudioStreamInfo.fccType = streamtypeAUDIO;<br />
// StreamInfo.fccHandler = 0; // Not used for audio streams<br />
// StreamInfo.dwFlags = 0; // Appears not to be relevant to audio streams<br />
AudioStreamInfo.dwScale = 1; // Documentation confusing - best guess<br />
AudioStreamInfo.dwQuality = -1; // Use handler default quality<br />
AudioStreamInfo.dwRate = 11025; // Audio hard-coded to 11.025 kHz<br />
AudioStreamInfo.dwStart = 0;<br />
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AudioStreamInfo.dwLength = uiLocalNumFramesUsed * uiAudioBufferActualSize;<br />
// Decided on this based on Windows reports of audio length!<br />
// I really don't know what this parameter must be!<br />
<br />
// StreamInfo.dwInitialFrames;  // Used for playback, I guess<br />
AudioStreamInfo.dwSuggestedBufferSize = uiAudioBufferActualSize;<br />
// bytes per block<br />
AudioStreamInfo.dwSampleSize = 2;  // Same as nBlockAlign<br />
// StreamInfo.rcFrame; // not relevant for audio frames<br />
// StreamInfo.dwEditCount; // maintained by stream handler<br />
// StreamInfo.dwFormatChangeCount; // maintained by stream handler<br />
// StreamInfo.szName[64];  // No idea!<br />
<br />
// Create the audio stream;<br />
uiResult = AVIFileCreateStream(pAVIFile, &pAVIAudioStream, &AudioStreamInfo);<br />
if (uiResult != AVIERR_OK)<br />
	exit;<br />
<br />
uiResult = AVIStreamSetFormat(pAVIAudioStream, 0, &AudioFormat,	sizeof(AudioFormat));<br />
if (uiResult != AVIERR_OK)<br />
	exit;<br />
<br />
for (uiCounter = 0; uiCounter < uiNumFramesUsed; uiCounter++)<br />
{<br />
	// generate the video frame to be saved<br />
	// ###################################<br />
	// Some application-specific code here<br />
	// ###################################<br />
<br />
	// write the video frame (data at gpAVIBufBits) to the stream<br />
	uiResult = AVIStreamWrite(pCompressedVideoStream, uiCounter, 1, gpAVIBufBits, 		bitmapForAVIHeader.biSizeImage, 0, NULL, NULL);<br />
	if (uiResult != AVIERR_OK)<br />
		exit;<br />
		<br />
	// Write the corresponding audio block, captured using WaveIn... functions<br />
	uiResult = AVIStreamWrite(pAVIAudioStream, uiCounter, <br />
		1, pAudioDataBlock[(uiCounter],<br />
		uiAudioBufferActualSize, 0, NULL, NULL);<br />
	if (uiResult != AVIERR_OK)<br />
		exit;<br />
}<br />
// Don't forget to close the streams!!!<br />