diff --git a/README.md b/README.md index a13288e..bfcda36 100644 --- a/README.md +++ b/README.md @@ -101,6 +101,9 @@ OS Image for development with the following tidbits: **Dual-camera with Kernel 4.19.y** * [Kernel 4.19.111](#mipi-dual-camera) +**Dual camera with Mainline Kernel 5.11.0** +* [Kernel 5.11.0](#mipi-dual-camera-mainline) + ## Mainline u-boot Here we are going to fix the reboot issue i had with my u-boot Android like build. @@ -3436,6 +3439,41 @@ https://github.com/avafinger/kernel-rockchip-dual-camera You can attach two cameras (OV13850 or OV4689) to the NanoPi M4 and stream video. +## MIPI Dual Camera Mainline + +Initial support for dual-camera has been introduced in Kernel 5.11.0 with pre-built camera application + +The setup must follow one of this: + +* Single OV13850 installed in CSI-1 +* Single OV4689 installed in CSI-1 +* Dual camera OV13850 installed in CSI-1 and CSI-2 +* Dual Camera OV4689 installed in CSI-1 and CSI-2 + +**Limitations:** + +The camera sensor tested with ov4689 is the camera w/o IR cut filter + +**Pulling video from the cameras** + +* Camera 1 (**CSI-1**) + + cam --camera=1 --capture=100 --file=cam1-frames-100_1920x1080.nv21 -s height=1080,width=1920,pixelformat=NV21 + +* Camera 2 (**CSI-2**) + + cam --camera=1 --capture=100 --file=cam2-frames-100_1920x1080.nv21 -s height=1080,width=1920,pixelformat=NV21 + + +* Converting **NV21** to **MP4** using **ffmpeg** in you PC + + ffmpeg -f rawvideo -vcodec rawvideo -s 1920x1080 -r 30 -pix_fmt nv21 -i cam1-frames-100_1920x1080.nv21 -c:v libx264 -preset ultrafast -qp 0 -y -hide_banner test-cam1.mp4 + ffmpeg -f rawvideo -vcodec rawvideo -s 1920x1080 -r 30 -pix_fmt nv21 -i cam2-frames-100_1920x1080.nv21 -c:v libx264 -preset ultrafast -qp 0 -y -hide_banner test-cam2.mp4 + + +**8GB SD CARD Image** +https://github.com/avafinger/nanopi-m4-ubuntu-base-minimal/releases/tag/1.42 + **Mainline Porting** You can get further info about the porting: @@ -3501,7 +3539,7 @@ This is a screenshot of mjpg-streamer while streaming video in 1920x1080 taken f This will configure the sensor OV4689 but grabbed images will appear green and dark, so we need a trick to bypass this limitation, run the **cam** application to grab a few images and adjust exposure automatically for our v4l2 application and then repeat the previous config. - cam --camera=1 --capture=1000 --file=/dev/null -s height=1520,width=2688,pixelformat=NV21 + cam --camera=1 --capture=15 --file=/dev/null -s height=1520,width=2688,pixelformat=NV21 Now we can run mjpg streamer and stream video to our web clients. Build the latest mjpg streamer from source, install and run like: