2 Webcams im Repetier Server

Irokiller · April 2023

Hallo ich habe 2x die Logitech C920. Beim hochfahren vom Resparry Pi 4 Leuchten beide Kameras kurz auf und dann bleibt nur eine Online. Jetzt weiß ich aber nicht ob die Stromversorung vom Pi zu gering ist um beide zu betreiben oder ob ich was falsch gemacht habe.

Repetier · April 2023

Sie leuchten nur wenn sie aktiv genutzt werden.

Gehe ins linux terminal und sende
lsusb
und sieh ob du beide siehst.

Wenn ja sieh dir die Konfiguration an:
cat /usr/local/Repetier-Setup/etc/webcam.conf

Am ende siehst du

# WEBCAM_DIR is used for naming video devices

# /dev/v4l/by-id/* Is to use the device names. It is not important where you plug it in

# /dev/v4l/by-path/* Is to use the usb port plugged in to identify webcams. Use this if you have identical names. Might not exist in newer linux versions.

WEBCAM_DIR=/dev/v4l/by-path/*

Wichtig ist das du nicht by-id nutzt als Verzeichnis, da beide vermutlich die gleiche id haben.

Zum neustart root werden:
sudo -i
startAllCams

dann im syslog nachsehen was er startet und ob er einen mjpg_streamer wegen Probleme wieder schließt:
tail -1000 /var/log/syslog

Irokiller · April 2023

Also ich habe beide gefunden unter lsusb. In der Webcam Conf habe ich so vorgefunden das WEBCAM_DIR=/dev/v4l/by-path/* so steht wie es soll. nach dem Neustart der Webcams kam schon was mit

Webcam does not support MJPG - using slower YUYV instead! trotzdem ging einer der beiden wieder an und funktioniert auch. unter dem syslog habe ich augenscheinlich nichts gesehen. https://pastebin.com/QTMtEKMP

Repetier · April 2023

So hohe Auflösung bei 30fps ist eine schlechte Idee. mjpg ist im Vergleich zu videos schlecht komprimiert. Und wenn er wirklich software komprimierung nutzt schafft die cpu das nicht. Wobei die Logitech webcams eigentlich hardware komprimierung können.

Was gibt den
ps aux | grep mjpg

zurück? Im log sieht man nicht das sich einer beendet hat, er hat auf port 8080 und 8081 gestartet.

Was gibt
/usr/bin/v4l2-ctl --list-formats-ext -d /dev/video0

zurück? Da sieht man alle modi die die webcam können sollte.

Irokiller · April 2023

Also bei

ps aux | grep mjpg

kommt:

root 897 2.3 0.3 59640 14272 ? Sl 19:25 0:05 /usr/local/bin/mjpg_streamer -i /usr/local/lib/mjpg-streamer/input_uvc.so -d /dev/video0 --fps 30 -q 85 -r 1600x896 -o /usr/local/lib/mjpg-streamer/output_http.so -p 8080 -w /usr/local/share/mjpg-streamer/www -b

root 921 0.2 0.3 32280 12772 ? Sl 19:25 0:00 /usr/local/bin/mjpg_streamer -i /usr/local/lib/mjpg-streamer/input_uvc.so -d /dev/video2 --fps 30 -q 85 -r 1600x896 -o /usr/local/lib/mjpg-streamer/output_http.so -p 8081 -w /usr/local/share/mjpg-streamer/www -b

pi 2282 0.0 0.0 7452 596 pts/0 S+ 19:29 0:00 grep --color=auto mjpg

und im /usr/bin/v4l2-ctl --list-formats-ext -d /dev/video0 kommt

ioctl: VIDIOC_ENUM_FMT

Type: Video Capture

[0]: 'YUYV' (YUYV 4:2:2)

Size: Discrete 640x480

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 160x90

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 160x120

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 176x144

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 320x180

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 320x240

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 352x288

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 432x240

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 640x360

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 800x448

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 800x600

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 864x480

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 960x720

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 1024x576

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 1280x720

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 1600x896

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 1920x1080

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 2560x1472

Interval: Discrete 0.500s (2.000 fps)

[1]: 'MJPG' (Motion-JPEG, compressed)

Size: Discrete 640x480

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 160x90

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 160x120

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 176x144

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 320x180

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 320x240

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 352x288

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 432x240

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 640x360

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 800x448

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 800x600

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 864x480

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 960x720

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 1024x576

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 1280x720

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 1600x896

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Size: Discrete 1920x1080

Interval: Discrete 0.033s (30.000 fps)

Interval: Discrete 0.042s (24.000 fps)

Interval: Discrete 0.050s (20.000 fps)

Interval: Discrete 0.067s (15.000 fps)

Interval: Discrete 0.100s (10.000 fps)

Interval: Discrete 0.133s (7.500 fps)

Interval: Discrete 0.200s (5.000 fps)

Irokiller · April 2023

Also ich habe die Auflösung weiter runter gestellt jetzt gehen sie zumindest halb.

Nachdem ich den Pi wieder eingeschaltet habe bleiben die Cams off, erst nachdem ich die via Restart Webcam Server nochmal restarten lasse gehen sie bisher.

2 Webcams im Repetier Server

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