Risc

ytf technology
https://www.aliexpress.com/store/1833868 Aliexpress Lichee RV Dock Allwinner D1 Development Board RISC-V Linux Starter Kit, $20 64 bit, mipi CSI camera, 4k hdmi output linux board.

visionfive
https://www.youtube.com/watch?v=ykKnc86UtXg and https://www.starfivetech.com/en/site/boards CSI camera connector. h.264 encoding, decoding in hardware.

ffmpeg
main problem with risc is lack of proper Ffmpeg support.

eevblog
https://www.youtube.com/watch?app=desktop&v=L9Wrv7nW-S8 $0.1 micro controller by http://eevblog.com http://www.wch-ic.com/products/CH32V003.html https://www.tindie.com/products/adz1122/ch32v003-risc-v-mcu-development-board/ LILYGO® TTGO T-32C3 ESP32-C3 Wireless Module RISC-V 32 Bit  50 zar

links
streaming

pine, sipeed, Raspberry