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Today's Topics:
1. Cannot get image from UV4L USB Cam on Raspberry Pi (Oli ver)
----------------------------------------------------------------------
Message: 1
Date: Sat, 14 Sep 2019 11:21:33 -0400
From: Oli ver <olivierle...@gmail.com>
To: motion-user@lists.sourceforge.net
Subject: [Motion-user] Cannot get image from UV4L USB Cam on Raspberry
Pi
Message-ID: <1cff25dc-de35-4c07-b5e2-8b422c04a...@gmail.com>
Content-Type: text/plain; charset="utf-8"
Hi there,
I?m trying to setup a USB camera in Motion (and MotionEye) but as soon as I add
the camera to Motion, I get this message.
[1:ml1:Camera1] [ERR] [VID] v4l2_mmap_set: Error mapping buffer 0 mmap: No such
device
[1:ml1:Camera1] [ERR] [VID] vid_start: V4L2 device failed to open
[1:ml1:Camera1] [WRN] [ALL] motion_init: Could not fetch initial image from
camera
[1:ml1:Camera1] [WRN] [ALL] motion_init: Motion continues using width and
height from config file(s)
I configured the camera as follow:
- Camera Type: `Local V4L2 Camera`
- Camera: H264 USB Camera
Streaming does work when I watch it from UV4L streaming server and I take
pictures with fswebcam.
I tried to setup the camera in a network camera with the MJPEG stream from UV4L
server. I do see the video but I can?t get more than 2-4 frames/s. Even after I
recompiled ffmpeg and Motion. https://github.com/ccrisan/motioneye/issues/930
<https://github.com/ccrisan/motioneye/issues/930>.
Settings : 75% quality, 1280x720, no streaming, Recording on motion on
H264/OMX.
If I try the same stream on mobile phone in VLC, the stream is perfectly fluid.
Anyway, I would like to make it work with Local V4L2 camera:
Configuration:
Raspberry Pi 3 (first one) - Raspbian Buster.
Ethernet, no WiFi
ffmpeg version 4.2 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 8 (Raspbian 8.3.0-6+rpi1)
configuration: --enable-mmal --enable-omx --enable-omx-rpi
--extra-cflags=-I/opt/vc/include/IL
Camera:
ELP-USBFHD04H-KRL170
Max. Resolution: 1920X1080
Picture format: H.264,MJPEG or YUY2
USB2.0 HS/FS, USB1.1 FS
USB Video Class(UVC)1.1
1920 (H) x 1080 (V) pixels H.264 30fps MJPEG 30fps
1280 (H) x 720 (V) pixels H.264 30fps MJPEG 30fps
Thank you
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