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]

Hi,

This is not the right forum. You have to post to https://groups.google.com/g/doubango-ai

Before posting to the right forum:

    1/ Add parallel delivery

    2/ Very important: Attach full logs

Regards,

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[Saravanamurthy K]

Hi,

Can help me how to implement rtsp stream in c++

Thanks
K.Saravanamurthy.
9894802877

On Thu, Jul 22, 2021 at 6:21 PM Mamadou DIOP <diopm...@doubango.org> wrote:

Another note: add real RTSP code. What you have posted has noting to do with RTSP. You just copy/paste'ed code from https://github.com/DoubangoTelecom/ultimateALPR-SDK/blob/ccd4b58153e9ad087fe36a0333b9e2d16e413822/samples/c%2B%2B/recognizer/recognizer.cxx#L236

Your code will not compile as many parts are missing and you're opening the camera not an RTSP stream.

To view this discussion on the web visit https://groups.google.com/d/msgid/doubango/f69867dc-6808-0cc1-edb2-a5e3a5faab65%40doubango.org.