ESP32-CAM Live Stream

Dependencies

• Platform.io toolkit
• ESP-IDF (ver. 5.1)
• ESP32 Camera Driver (git submodule)

Build

• Clone repository

$ git clone <url>
$ cd esp32-cam-live-stream
$ git submodule update --init --recursive

• Generate configuration

$ cd <project-folder>
$ pio run -t menuconfig

# Camera live stream options
#  -> WiFi options
#  -> Video camera options

• Build

$ pio run -e esp32cam -v

• Upload

$ pio run -e esp32cam -t upload

Camera options

• XCLK frequency (Hz) = 10MHz - 20MHz
• LEDC timer = 0 (by default)
• LEDC channel = 0 (by default)
• Pixel format = JPEG (JPEG is preferable value)
• Frame size: QVGA - SVGA (depends on used camera module)
• JPEG quality: 0 - 63 (lower is better quality)
• Number of frames: 2 (if > 1, camera will work in continuous mode)
• Frame location: PSRAM (by default)
• Grab mode: latest (if number of frames >1 then the latest mode should be used)
• Pins config:

Pin	Wrover Kit	ESP-EYE	AI-THINKER
PWDN	-1	-1	32
RESET	-1	-1	-1
XCLK	21	4	0
SIOD	26	18	26
SIOC	27	23	27
D7	35	36	35
D6	34	37	34
D5	39	38	39
D4	36	39	36
D3	19	35	21
D2	18	14	19
D1	5	13	18
D0	4	34	5
VSYNC	25	5	25
HREF	23	27	23
PCLK	22	25	22

Observations

Options affecting performance:

• XCLK frequency (the higher value the more FPS?)
• Pixel format (capturing RAW formats loads handling heavily)
• Frame size (the more frame size the more data to handle at a time)
• JPEG quality (the more quality the highest CPU affecting)