RTSP Stream Delay

[Saravanamurthy K]

Hi,

I Integrated ULTALPR_SDK in C++ with rtsp stream but its delay 1 to 2 minutes delay,

when compare to live stream.

I used opencv for rtsp stream.

Can I have solution why stream delay. 

       Mat frame;

VideoCapture cap(0);

int deviceID = 0;             // 0 = open default camera

int apiID = cv::CAP_ANY;      // 0 = autodetect default API

// open selected camera using selected API

cap.open(deviceID, apiID);

// check if we succeeded

if (!cap.isOpened()) {

cerr << "ERROR! Unable to open camera\n";

return -1;

}

//UltAlprSdkResult result;

//std::string jsonConfig = __jsonConfig;

ULTALPR_SDK_ASSERT((result = UltAlprSdkEngine::init(jsonConfig.c_str())).isOK());

//Json::Reader reader;

//Json::Value root;

while (1) {

cap.read(frame);

// check if we succeeded

if (frame.empty()) {

cerr << "ERROR! blank frame grabbed\n";

break;

}

// show live and wait for a key with timeout long enough to show images

imshow("Live", frame);

if (waitKey(5) >= 0)

break;

ULTALPR_SDK_ASSERT((result = UltAlprSdkEngine::process(

ULTALPR_SDK_IMAGE_TYPE_BGR24,

frame.ptr(),

frame.size().width,

frame.size().height

)).isOK());

const std::string& json = result.json();

/*if (!json.empty())

ULTALPR_SDK_PRINT_INFO("result print: %s", json.c_str());*/

//End Read LicencePlate

ULTALPR_SDK_PRINT_INFO("Processing done.");

// Print latest result

if (!isParallelDeliveryEnabled && result.json()) { // for parallel delivery the result will be printed by the callback function

const std::string& json_ = result.json();

if (!json_.empty()) {

ULTALPR_SDK_PRINT_INFO("result: %s", json_.c_str());

                    }

}

}

[Mamadou DIOP]

Please read https://groups.google.com/g/doubango/c/EzCFzej0Iso

Nope, you don't have 1 to 2 minutes delay. You haven't implemented RTSP stream at all, the code you have shared miss several parts and will not compile.

If you have really implemented RTSP stream and have 2 minute delay, then share the full code and full logs.

You cannot say you have implemented RTSP stream C++ and have 2 minutes delay then shortly after ask for help to do it -> https://groups.google.com/g/doubango/c/EzCFzej0Iso/m/TnoWu2vRAgAJ

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