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Re: Sample data set for Supplement 149 (MPEG-4 AVC/H.264 Transfer Syntax)?

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Subject: Re: Sample data set for Supplement 149 (MPEG-4 AVC/H.264 Transfer Syntax)?
From: annapurne.s@raster.in (Annapurne S)
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by: Annapurne S - Tue, 29 Aug 2023 06:27 UTC

Hello, all i am try to convert MPEG4 to dicom, but i don't know i set the pixel data in right format, because video is not playing.

This is how i read the video file from path.

std::ifstream videoStream(videoPath, std::ios::binary);
if (!videoStream)
{
std::cerr << "Error opening video file" << std::endl;
}

// Read the entire video file into a buffer
videoStream.seekg(0, std::ios::end);
std::streampos fileSize = videoStream.tellg();
videoStream.seekg(0, std::ios::beg);

std::vector<unsigned char> videoBuffer(fileSize);
char byte;
while (videoStream.read(&byte, sizeof(byte))) {
videoBuffer.push_back(byte);
}

This is the code of pixeldata,

// Create a DcmPixelData object
DcmPixelData* pixelData = new DcmPixelData(DCM_PixelData);
// Insert the pixel data element into the dataset
dataset->insert(pixelData);
// Create a DcmPixelSequence and DcmPixelItem to hold the video data
DcmPixelSequence* pixelSequence = new DcmPixelSequence(DCM_PixelData);
DcmPixelItem* pixelItem = new DcmPixelItem(DCM_PixelItemTag);
// Set pixel data in the pixel item
pixelItem->putUint8Array(videoBuffer.data(), fileSize);

// Insert the pixel item into the pixel sequence
pixelSequence->insert(pixelItem);

// Set the pixel sequence in the pixel data element
pixelData->putOriginalRepresentation(EXS_MPEG4HighProfileLevel4_1, nullptr, pixelSequence);

Subject	Author
Sample data set for Supplement 149 (MPEG-4 AVC/H.264 Transfer Syntax)?	Annapurne S

Gravity is a myth, the Earth sucks.

devel / comp.protocols.dicom / Re: Sample data set for Supplement 149 (MPEG-4 AVC/H.264 Transfer Syntax)?