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Today's Topics:
1. PiNoir camera: bright at 800x600, dark at higher res?
(Mathias Koerber)
----------------------------------------------------------------------
Message: 1
Date: Sat, 25 Dec 2021 22:10:58 +0800
From: Mathias Koerber <math...@koerber.org>
To: motion-user@lists.sourceforge.net
Subject: [Motion-user] PiNoir camera: bright at 800x600, dark at
higher res?
Message-ID: <c4f43f39-d0ce-1f7f-81f7-ac4756dff...@koerber.org>
Content-Type: text/plain; charset=UTF-8; format=flowed
I just re-built my Motion Rpi using a RpI 3 with a PiNoir V2
camera (using v4l2, as installed from apt-get)
I find that at 800x600 resolution, the camera yield bright picgtures,
but if I try higher resolutions (1024x768, 1600x1200) it gets very dark
I also find that auto-brightness has no effect afaics.
Does anyone have any tips on how to get a higher-resolution
but bright picture?
thx
Here is my config
> daemon off
> setup_mode off
> emulate_motion off
> log_file /var/log/motion/motion.log
> log_level 6
> target_dir /var/lib/motion
>
> videodevice /dev/video0
> width 800
> height 600
> auto-brightness 2
>
> framerate 15
> text_left DOORBELL
> text_right %Y-%m-%d\n%T-%q
>
> threshold 1500
> despeckle_filter EedDl
> minimum_motion_frames 3
> event_gap 60
> pre_capture 10
> post_capture 30
> lightswitch_percent 85
>
> picture_output best
> picture_filename %Y%m%d_%H%M%S-%q
>
> movie_output on
> movie_max_time 60
> #movie_quality 45
> movie_quality 60
> movie_codec mp4
> movie_filename %t-%v-%Y%m%d_%H%M%S
> rotate 90
> movie_max_time 300
>
> webcontrol_port 8080
> webcontrol_localhost off
> webcontrol_parms 2
>
> # The port number for the live stream.
> stream_port 8081
> stream_localhost off
> stream_preview_scale 25
>
> locate_motion_mode on
> locate_motion_style redbox
> text_left "Doorbell\n%wx%h\nFrame: %q FPS: %{fps}"
> text_right "%v\n%Y-%m-%d\n%T"
> text_changes on
> text_scale 2
and here output from v4l2-ctl --all:
> Driver Info:
> Driver name : bm2835 mmal
> Card type : mmal service 16.1
> Bus info : platform:bcm2835-v4l2-0
> Driver version : 5.10.63
> Capabilities : 0x85200005
> Video Capture
> Video Overlay
> Read/Write
> Streaming
> Extended Pix Format
> Device Capabilities
> Device Caps : 0x05200005
> Video Capture
> Video Overlay
> Read/Write
> Streaming
> Extended Pix Format
> Priority: 2
> Video input : 0 (Camera 0: ok)
> Format Video Capture:
> Width/Height : 800/600
> Pixel Format : 'YU12' (Planar YUV 4:2:0)
> Field : None
> Bytes per Line : 800
> Size Image : 729600
> Colorspace : SMPTE 170M
> Transfer Function : Default (maps to Rec. 709)
> YCbCr/HSV Encoding: Default (maps to ITU-R 601)
> Quantization : Default (maps to Limited Range)
> Flags :
> Format Video Overlay:
> Left/Top : 150/50
> Width/Height: 1024/768
> Field : None
> Chroma Key : 0x00000000
> Global Alpha: 0xff
> Clip Count : 0
> Clip Bitmap : No
> Framebuffer Format:
> Capability : Extern Overlay
> Global Alpha
> Flags : Overlay Matches Capture/Output Size
> Width : 800
> Height : 608
> Pixel Format : 'YU12'
> Streaming Parameters Video Capture:
> Capabilities : timeperframe
> Frames per second: 15.000 (15/1)
> Read buffers : 1
>
> User Controls
[...]
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