Need help installing ustreamer

A Former User

@luckyflyer re security risk, there is always a risk with opening network services, but if you need to access the stream from a device other than the pi, then you don't have much choice in opening up. you could bind to a specific IP address instead of 0.0.0.0 but imho it won't increase the security of the setup, only reduce the convenience. also 0.0.0.0 will work even with wired and wireless networks on the Pi, and every address a dhcp server may allocate the pi in the future.

re temperamental, using systemd to start and restart it as needed will probably take care of the availability of the process.

luckyflyer

@gtj0
Can you share your Duetlapse start script with me.
Thanks

gtj0

@luckyflyer

The following 2 files will run ustreamer anytime the camera (/dev/video0) is plugged in.

/etc/udev/rules.d/80-ustreamer.rules:

KERNEL=="video0", SUBSYSTEM=="video4linux", TAG+="systemd", ENV{SYSTEMD_WANTS}+="ustreamer@%k.service"

/etc/systemd/system/ustreamer@.service:

[Unit]
Description=UStreamer for video0

[Service]
Type=simple
ExecStart=/usr/local/bin/ustreamer -r 640x480 --static /tmp/ --encoder=HW -m JPEG -d /dev/%i --host=0.0.0.0 --port=8080

[Install]
WantedBy=multi-user.target

Reboot after copying both files to their destinations.

Here's the command line to start DuetLapse and pull from ustreamer:

./DuetLapse.py -camera web -weburl http://localhost:8080/stream -duet localhost -seconds 5 -detect none

Obviously you have to customize that command line. It just captures an image every 5 seconds.

If you need to auto-start it as well, you may have to contact @Danal . I can't seem to get it to run as a systemd service.

luckyflyer

@gtj0 Thanks for that.

luckyflyer

@gtj0
Having trouble executing the file,

/etc/udev/rules.d/80-ustreamer.rules:

I get this,

pi@duet3:~ $ /etc/udev/rules.d/80-ustreamer.rules:
-bash: /etc/udev/rules.d/80-ustreamer.rules:: No such file or directory

I have also tried in

pi@duet3:~/ustreamer $

and get the same error
I also tried with sudo first but got errors.

I haven't tried the second command yet.

The command line to start Duetlapse I understand.

Unfortunately your trying to help a linux dummy

gtj0

@luckyflyer The two files I posted aren't meant to be executed. You just need to save them with the path's indicated and reboot.
The system automatically reads the rules files at boot and any time after that when it detects that /dev/video0 is present, it'll automatically start the ustreamer service.

luckyflyer

Well I guess I need to admit I don't know how to save a file in linux. I googled "how to save a file with raspbian command line" but they talk more about editing files. Can you give me the exact syntax for saving these files.

Looks like an editor like nano may be the way to save files, trying to figure it out.

A Former User

@gtj0 said in Need help installing ustreamer:

/etc/udev/rules.d/80-ustreamer.rules

so run sudoedit /etc/udev/rules.d/80-ustreamer.rules and paste

KERNEL=="video0", SUBSYSTEM=="video4linux", TAG+="systemd", ENV{SYSTEMD_WANTS}+="ustreamer@%k.service"

into it. hit ctr + x to exit the editor (say yes to save on your way out)*.

similar for /etc/systemd/system/ustreamer@.service

*) edit: this assumes the default EDITOR enviornment variable is set to nano, but if you've changed it you probably know how to use the editor:)

luckyflyer

Thank you sir.

luckyflyer

@gtj0 ,
I have both files entered and saved, rebooted but am unable to log onto http://0.0.0.0:8080 or my printers address http://192.168.0.181:8080. I've double checked that everything is correct, I removed "--encoder=HW and -m JPEG" from /etc/systemd/system/ustreamer@.service: since they don't apply to my camera. But have tried it with and without those two items.
It starts up ok if I use the start script.

luckyflyer

This happens when I try to start the service manually,

pi@duet3:~ $ sudo systemctl start ustreamer@.service
Failed to start ustreamer@.service: Unit name ustreamer@.service is missing the instance name.

A Former User

@luckyflyer said in Need help installing ustreamer:

sudo systemctl start ustreamer@.service

this seems to be a so called template service, so it needs the name in the invocation; sudo systemctl start ustreamer@video0.service

which probably means Description=UStreamer for video0 should be changed to Description=UStreamer for %I but doesn't affect the issue at hand I believe.

gtj0

@luckyflyer Yeah sorry about that. I should have given more compete instructions. @bearer is correct about being a template service and has the correct command line to manually start and stop the service.

I don't see (or don't remember) whether the camera you're using is a USB cam or a MIPI cam directly attached to the Pi's camera connector. If it's a USB camera, then here are updated service and rules files that will automatically stop the service when the device disconnects..

/etc/udev/rules.d/80-ustreamer.rules:

ACTION=="add", KERNEL=="video0", SUBSYSTEM=="video4linux", TAG+="systemd", ENV{SYSTEMD_WANTS}+="ustreamer@%k.service"
ACTION=="remove", KERNEL=="video0", SUBSYSTEM=="video4linux", RUN+="/bin/systemctl --no-block stop ustreamer@%k.service"

/etc/systemd/system/ustreamer@.service:

[Unit]
Description=UStreamer for %I

[Service]
Type=simple
ExecStart=/usr/local/bin/ustreamer --exit-on-parent-death -r 640x480 --static /tmp/ -d /dev/%i --host=0.0.0.0 --port=8080

[Install]
WantedBy=multi-user.target

As a reminder... "0.0.0.0" is a special IP address that tells server software to listen for connections on all ip addresses on the system. It can never be used to actually connect to anything.

luckyflyer

@gtj0,
Yes usb cam, I will try this in about an hour. Thanks to you and @bearer .

A Former User

@gtj0 thanks for sharing this, gonna have to try with with my auto--bossac-recovery plan.

re: 0.0.0.0 that had me questioning a few things (in the sense OP said he could connect to it)

luckyflyer

What mipi camera do you guys recommend for print monitoring? I've been looking at the arducam v2 https://www.amazon.com/Arducam-Raspberry-Official-Megapixel-Acrylic/dp/B083FNFPF2/ref=sr_1_3?dchild=1&keywords=arducam+v2&qid=1590854384&sr=8-3

Or is there something better out there.

Dougal1957

@luckyflyer said in Need help installing ustreamer:

What mipi camera do you guys recommend for print monitoring? I've been looking at the arducam v2 https://www.amazon.com/Arducam-Raspberry-Official-Megapixel-Acrylic/dp/B083FNFPF2/ref=sr_1_3?dchild=1&keywords=arducam+v2&qid=1590854384&sr=8-3

Or is there something better out there.

Have you seen this one High Res PI Camera with interchangeable lens

luckyflyer

@Dougal1957
Nice looking cam , I would like to buy from a US vendor if possible, is it available here anywhere?

gtj0

The downside of RPi cameras is the distance limit and the flat ribbon cable. You get a lot more choices if you use a USB camera.

I use this one
https://www.amazon.com/gp/product/B07HVT2XZL/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
because it has LED illumination, is easy to mount, move, and use for other things if needed.

gtj0

@luckyflyer You can get RPi cameras with interchangeable lenses on Amazon. Here's one...
https://www.amazon.com/Arducam-Camera-Raspberry-Interchangeable-LS-2717CS/dp/B012ETE75I/