Found it. The 480kB data is raw grayscale data which requires jpeg conversion. And there is a function for compressing this kind of compressions called "frame2jpg()".

Hope it helps!

Hi, I have a ESP32-S3-WROOM module which has camera and micro SD card module. I can take a snapshot a PIXELFORMAT_JPEG photo. However, when I change the pixelformat with "PIXELFORMAT_GRAYSCALE", I cant save a valid photo. Average SVGA colored JPEG photo takes about 25-35 kB space. However the pixelf...

Hi, I have ESP32 and SIM800L module. I want to take a image and send it over MQTT. Because of this, I have this code: /////////////////////////////////////////CAMERA INIT////////////////////////////////// #include <esp_camera.h> #include <soc/soc.h> // Disable brownour problems #include <soc/rtc_cnt...

Hi, I was facing with the similiar problems. Could you help me in this thread? https://forum.arduino.cc/t/sending-an-image-file-with-sim-800l/1138658 https://stackoverflow.com/questions/76489849/sim800l-network-error-while-sending-e-m http://www.embeddedadvice.com/t/sim-800l-e-mail-sending-error/296...

Hi! I'm currently working on ESP32-WROOM-32D and I'm trying to recording audio from I2S microphone with using "driver/i2s.h" library. I captured the audio. However the audio volume is extremely low. I researched many sites and I found the "analogSetPinAttenuation()" function. I implemented this func...