Mini tutu: almost real time video srteaming between two orange pi one / PC

DoubleHP · Published in 2019-4-23 23:12:45

Edited by DoubleHP at 2019-4-24 03:05

Hello.

I am mid step in some project. It's time to publish some tips.

Final goal: build a dash camera system for my car.

Status of the day: recording live stream to disk, and network diffusion. Lag is 2.5s.

After digging many things, Raspi tools are not available on Orange Pis. Mplayer sux. So I ended up with the only tool that can read the camera properly: motion.

Hardware:
Orange Pi One with CSI cam and HDMI monitor.

https://www.aliexpress.com/item/Orange-Pi-One-SET-9-Orange-Pi-One-and-Camera-Camera-with-wide-angle-lens-for/32660642513.html?spm=a2g0s.9042311.0.0.27424c4dE39tpD
set 9

https://www.aliexpress.com/item/3-5-inch-LCD-HDMI-USB-Touch-Screen-Real-HD-1920x1080-LCD-Display-Py-for-Raspberri/32818537950.html?spm=a2g0s.9042311.0.0.27424c4dE39tpD
https://www.aliexpress.com/item/raspberry-pi-3-5-inch-HDMI-LCD-touchscreen-touch-screen-60-fps-high-speed-better-480/32819353553.html?spm=a2g0s.9042311.0.0.27424c4dE39tpD

Software configuration:
- Armbian_5.75_Orangepione_Ubuntu_xenial_default_3.4.113_desktop (full details here : http://www.orangepi.org/orangepi ... ead&tid=4270&extra= ). This is the ONLY Linux image that can work on opiOne+CSI as of today, with ubuntu_lxde_desktop_OrangePipc_v0_9_1.img.xz . For now, 4.19 does not support CSI; I have read 4.21 may bring CSI in ... but the source is uncertain.
- motion
- ffmpeg

DoubleHP · Published in 2019-4-23 23:38:11

Edited by DoubleHP at 2019-4-23 23:58

Major points:
- control recording of pictures on disk with "output_pictures" (I disabled them to not kill my SD; I will re-enable them later when I receive my High Endurance uSD, a model specific to NVRs)
- control stream diffusion over network with "stream_localhost"
- 'motion -s' will produce normal image files, but ghost/black network video.

Once this conf is set, run the server simply: 'motion -n'

And the client: ffplay -f mjpeg -probesize 32 -i "http://192.168.0.2:8081/"
You can also use VLC as client, but mplayer does not work.

When server dies, ffplay does not suicide; when server comes back; client is stuck on old image. To kill the client, I run this test in a look:
echo -n "" | telnet localhost 8081 2>/dev/null | grep -q "Escape character is" || kill_ffplay.sh

DoubleHP · Published in 2019-4-23 23:34:42

Edited by DoubleHP at 2019-4-23 23:56

Here are the changes I made in /etc/motion/motion.conf :

root@orangepione:/etc/motion# diff motion.conf.orig motion.conf
87c87,88
< rotate 0
---
> #rotate 0
> rotate 180
90c91,92
< width 320
---
> #width 320
> width 640
93c95,96
< height 240
---
> #height 240
> height 480
97c100,101
< framerate 2
---
> #framerate 2
> framerate 5
173c177,178
< threshold 1500
---
> #threshold 1500
> threshold 1
222c227
< post_capture 0
---
> post_capture 10
230c235,236
< event_gap 60
---
> #event_gap 60
> event_gap 120
234c240
< max_movie_time 0
---
> max_movie_time 600
250c256,257
< output_pictures on
---
> #output_pictures on
> output_pictures off
253a261
> #output_debug_pictures on
256a265
> quality 95
270c279,280
< ffmpeg_output_movies on
---
> ffmpeg_output_movies off
> #ffmpeg_output_movies off
328a339
> #use_extpipe on
332c343
< ;extpipe mencoder -demuxer rawvideo -rawvideo w=320:h=240:i420 -ovc x264 -x264encopts bframes=4:frameref=1:subq=1:scenecut=-1:nob_adapt:threads=1:keyint=1000:8x8dct:vbv_bufsize=4000:crf=24:partitions=i8x8,i4x4:vbv_maxrate=800:no-chroma-me-vf denoise3d=16:12:48:4,pp=lb -of avi -o %f.avi - -fps %fps
---
> #;extpipe mencoder -demuxer rawvideo -rawvideo w=320:h=240:i420 -ovc x264 -x264encopts bframes=4:frameref=1:subq=1:scenecut=-1:nob_adapt:threads=1:keyint=1000:8x8dct:vbv_bufsize=4000:crf=24:partitions=i8x8,i4x4:vbv_maxrate=800:no-chroma-me -vf denoise3d=16:12:48:4,pp=lb -of avi -o %f.avi - -fps %fps
360c371,372
< locate_motion_mode off
---
> #locate_motion_mode off
> locate_motion_mode preview
436c448,449
< picture_filename %v-%Y%m%d%H%M%S-%q
---
> #picture_filename %v-%Y%m%d%H%M%S-%q
> picture_filename %Y-%m-%d_%H-%M-%S_%q
467c480,481
< stream_quality 50
---
> #stream_quality 50
> stream_quality 90
471c485,486
< stream_motion off
---
> #stream_motion off
> stream_motion 1
474c489,490
< stream_maxrate 1
---
> #stream_maxrate 1
> stream_maxrate 10
477c493,494
< stream_localhost on
---
> #stream_localhost on
> stream_localhost off
503a521
> #webcontrol_localhost off

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DoubleHP · Published in 2019-4-23 23:35:02

Edited by DoubleHP at 2019-4-23 23:53

Or, the stripped file:

root@orangepione:/etc/motion# cat motion.conf | grep -v -e "^#" -e ";" | sort | uniq
auto_brightness off
brightness 0
contrast 0
daemon on
despeckle_filter EedDl
emulate_motion off
event_gap 120
ffmpeg_bps 500000
ffmpeg_deinterlace off
ffmpeg_output_debug_movies off
ffmpeg_output_movies off
ffmpeg_timelapse 0
ffmpeg_timelapse_mode daily
ffmpeg_variable_bitrate 0
ffmpeg_video_codec mpeg4
framerate 5
frequency 0
height 480
hue 0
input -1
ipv6_enabled off
lightswitch 0
locate_motion_mode preview
locate_motion_style box
logfile /var/log/motion/motion.log
log_level 6
log_type all
max_movie_time 600
minimum_frame_time 0
minimum_motion_frames 1
movie_filename %v-%Y%m%d%H%M%S
netcam_keepalive off
netcam_tolerant_check off
noise_level 32
noise_tune on
norm 0
output_debug_pictures off
output_pictures off
picture_filename %Y-%m-%d_%H-%M-%S_%q
picture_type jpeg
post_capture 10
pre_capture 0
process_id_file /var/run/motion/motion.pid
quality 75
quality 95
quiet on
rotate 180
roundrobin_frames 1
roundrobin_skip 1
saturation 0
sdl_threadnr 0
setup_mode off
smart_mask_speed 0
snapshot_filename %v-%Y%m%d%H%M%S-snapshot
snapshot_interval 0
stream_auth_method 0
stream_limit 0
stream_localhost off
stream_maxrate 10
stream_motion 1
stream_port 8081
stream_quality 90
switchfilter off
target_dir /var/lib/motion
text_changes off
text_double off
text_event %Y%m%d%H%M%S
text_right %Y-%m-%d\n%T-%q
threshold 1
threshold_tune off
timelapse_filename %Y%m%d-timelapse
track_auto off
track_iomojo_id 0
track_move_wait 10
track_speed 255
track_step_angle_x 10
track_step_angle_y 10
track_stepsize 40
track_type 0
use_extpipe off
v4l2_palette 17
videodevice /dev/video0
webcontrol_html_output on
webcontrol_localhost on
webcontrol_port 8080
width 640

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