esp32 cam takes old image

[zella9]

Hi, I try to make security system - "door opens, photo takes". But when i take photo - there is not realtime photo - seem like some old frame from internal buffer. I'm not understand how take realtime photo. Here code example which shoul give realtime photo:

Code: [Select all] [Expand/Collapse]

1.   server.on("/picture", HTTP_GET, [](AsyncWebServerRequest * request) {
2.  
3.     camera_fb_t * frame = NULL;
4.     frame = esp_camera_fb_get();
5.  
6.     request->send_P(200, "image/jpeg", (const uint8_t *)frame->buf, frame->len);
7.  
8.     esp_camera_fb_return(frame);
9.   });

GeSHi © Codebox Plus Extension

Response gives me old photo from buffer.

[onhiatus]

Did you ever figure this out? I'm running into the same behavior.

[Teddyz]

I also face the same problem, but with Examples->ESP32->Camera->CameraWebServer
I suspect it has to do that I use Arduino IDE instead of PlatformIO, but hard to tell without switching.

[felixlastname]

Find your answer here: https://github.com/espressif/arduino-esp32/issues/6047

Add to your code: config.grab_mode = CAMERA_GRAB_LATEST;