Deinitialize the Camera

Technical Discussion Arduino SDK
1

Hello everyone,

I’m working on a project that uses a Realtek-based camera module for both RTSP streaming and local recording. I need to run these features one at a time, and my goal is to fully deinitialize the camera after either streaming or recording so that I can reliably switch between modes.

Here’s what I’m facing:

  • After stopping streaming or recording, the camera doesn’t reinitialize correctly when I try to switch to the other mode.
  • I’m looking for the recommended procedure to properly deinitialize the camera. Are there specific reset routines or additional steps that I should follow to ensure a clean shutdown of the current mode?
  • Is it possible to toggle between streaming and recording without performing a full system reset?

Any insights, code examples, or references to relevant documentation would be greatly appreciated.

Thank you in advance for your help!

2

Hi @amirsohel059,

Is it possible to share your existing Arduino sketch?

Thank you.

3

Thanks for you reply.
it is not possible to share full code but i have added part of code whre im initilizing and deinitilizing the camera and what issues im facing

Here is the code

// ============================================================================
// software Configuration for Streaming
// ============================================================================

void startStreamingSession() {
lastActivityTime = millis();
Serial.println(“\n===== Starting Streaming Session =====”);
if (isRecording) {
Serial.println(“\n[Streaming] recording is active. Skipping Streaming.”);
return; // Skip the recording session if streaming is already active
}
setupStreamingHardware();
isStreaming = true;
Serial.println(“[Streaming] Live streaming started.”);
}

void stopStreamingSession() {
if (!isStreaming) {
Serial.println(“\n[streaming] Streaming is not active. Skipping teardown.”);
return; // Skip
}
Serial.println(“\n===== Stopping Live Streaming Session =====”);
teardownStreamingHardware();
isStreaming = false;
Serial.println(“[Streaming] Live streaming stopped.”);
delay(1000);

}

// ============================================================================
// Hardware Configuration for Streaming
// ============================================================================

void setupStreamingHardware() {
Serial.println(“[Streaming] Initializing hardware for live streaming…”);
Camera.configVideoChannel(CHANNEL, configV);
Camera.videoInit();
delay(100);
MMFModule camStream = Camera.getStream(CHANNEL);

audio.configAudio(configA);
audio.begin();
aac.configAudio(configA);
aac.begin();

rtsp.configVideo(configV);
rtsp.configAudio(configA, CODEC_AAC);
rtsp.begin();

audioStreamer.end();
avMixStreamer.end();

audioStreamer.registerInput(audio);
audioStreamer.registerOutput(aac);
if (audioStreamer.begin() != 0) {
Serial.println(“[Streaming] Audio StreamIO link start failed!”);
} else {
Serial.println(“[Streaming] Audio StreamIO link started.”);
}

avMixStreamer.registerInput1(camStream);
avMixStreamer.registerInput2(aac);
avMixStreamer.registerOutput(rtsp);
if (avMixStreamer.begin() != 0) {
Serial.println(“[Streaming] AV Mix StreamIO link start failed!”);
} else {
Serial.println(“[Streaming] AV Mix StreamIO link started.”);
}

Camera.channelBegin(CHANNEL);
IPAddress ip = WiFi.localIP();
Serial.print(“[Streaming] RTSP URL: rtsp://”);
Serial.print(ip);
Serial.print(“:”);
Serial.println(rtsp.getPort());
Serial.println(“[Streaming] Streaming hardware initialization complete.”);

// String rtspURL = “rtsp://” + ip.toString() + “:” + String(rtsp.getPort());
String rtspURL = “rtsp://” + String(ip[0]) + “.” + String(ip[1]) + “.” + String(ip[2]) + “.” + String(ip[3]) + “:” + String(rtsp.getPort());

// Publishing MQTT message after successful connection
String mqttMessage = rtspURL;
// mqttClient.publish(MQTT_STATUS_TOPIC, mqttMessage.c_str());
mqttClient.publish(mqttstatusTopic, mqttMessage.c_str());

Serial.print("[Streaming] RTSP URL: ");
Serial.println(rtspURL); // This will print the RTSP URL
}

void teardownStreamingHardware() {
Serial.println(“[Streaming] Tearing down streaming hardware…”);
rtsp.end();
audioStreamer.end();
avMixStreamer.end();
Camera.channelEnd(CHANNEL);
aac.end();
audio.end();
delay(500);
Serial.println(“[Streaming] Streaming hardware stopped.”);
}

// ============================================================================
// Software Configuration for Recording
// ============================================================================

void startRecordingSession() {
lastActivityTime = millis();
Serial.println(“\n===== Starting Recording Session =====”);
if (isStreaming) {
// Serial.println(“[Recording] Stopping active streaming before starting recording…”);
// stopStreamingSession();
Serial.println(“\n[Recording] Streaming is active. Skipping recording.”);
return; // Skip the recording session if streaming is already active
}
setupRecordingHardware();
recordingBaseFileName = generateFileName();
nextSegmentToUpload = 0;
Serial.print("[Recording] Base file name: ");
Serial.println(recordingBaseFileName);

mp4.setRecordingFileName(recordingBaseFileName.c_str());
mp4.setRecordingDuration(RECORDING_DURATION);
mp4.setRecordingFileCount(1000);
mp4.begin();
Serial.println(“[Recording] MP4 recording started.”);
isRecording = true;
}

void stopRecordingSession() {
if (!isRecording) {
Serial.println(“\n[Recording] recording is not active. Skipping teardown.”);
return; // Skip
}
Serial.println(“\n===== Stopping Recording Session =====”);
mp4.end();
teardownRecordingHardware();
isRecording = false;
Serial.println(“[Recording] MP4 recording stopped.”);
// Before rebooting, store the upload info so pending files can be resumed
storeLastUploadInfo();
delay(1000);
}

// ============================================================================
// Hardware Configuration for Recording
// ============================================================================
void setupRecordingHardware() {
Serial.println(“[Recording] Initializing hardware for recording…”);
Camera.configVideoChannel(CHANNEL, configV);
Camera.videoInit();
delay(100); // Allow camera to stabilize
MMFModule camStream = Camera.getStream(CHANNEL);

audio.configAudio(configA);
audio.begin();
aac.configAudio(configA);
aac.begin();

mp4.configVideo(configV);
mp4.configAudio(configA, CODEC_AAC);

audioStreamer.end();
avMixStreamer.end();

audioStreamer.registerInput(audio);
audioStreamer.registerOutput(aac);
if (audioStreamer.begin() != 0) {
Serial.println(“[Recording] Audio StreamIO link start failed!”);
} else {
Serial.println(“[Recording] Audio StreamIO link started.”);
}

avMixStreamer.registerInput1(camStream);
avMixStreamer.registerInput2(aac);
avMixStreamer.registerOutput(mp4);
if (avMixStreamer.begin() != 0) {
Serial.println(“[Recording] AV Mix StreamIO link start failed!”);
} else {
Serial.println(“[Recording] AV Mix StreamIO link started.”);
}

Camera.channelBegin(CHANNEL);
Serial.println(“[Recording] Recording hardware initialization complete.”);
}

void teardownRecordingHardware() {
Serial.println(“[Recording] Tearing down recording hardware…”);
mp4.end();
audioStreamer.end();
avMixStreamer.end();
Camera.channelEnd(CHANNEL);
aac.end();
audio.end();
delay(500); // Allow flush of pending frames
Serial.println(“[Recording] Recording hardware stopped.”);
}
termianl output

[VID Wrn]

CH 1 MMF ENC Queue full

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image584×583 7.53 KB