DuetLapse available for Alpha testing

arhi

@luckyflyer this worked for me

apt-get install ffmpeg fswebcam wget
apt-get install libatlas-base-dev
apt-get install python3-numpy python-numpy

Danal

@luckyflyer said in DuetLapse available for Alpha testing:

@Danal I've got the numpy required error on my Duet pi, you said in a previous post that "I've updated the script to show the required commands, if numpy is not found." I'm on your Duetlapse github wiki, usage section. I don't see any commands for if numpy not found. Where do I find them?

Also I've loaded everything onto a standalone pi and everything works except there is no video. I'm using a microsoft usb camera that works with motion eyes, I have the script set for usb camera. I read where someone else had this problem but was unable to follow what they did to correct, cuz I'm a noob with linux, would you please walk me through what I need to do to get video?
I'm not going to use the stand alone pi if I can get the Duet pi working but ask because I figure if its not working on the stand alone pi then it won't work on the Duet pi.
Tia

ahri's commands should work.

I was referring to having the script tell you that, instead of half a page of stack trace and a "numpy not found". I'll check and see if I did that or not...

zapta

@arhi,

#define x(y)    y
#define x (y)   y

One is a macro with an argument and the other is a macro with zero arguments. It's a trick question.

luckyflyer

I was referring to having the script tell you that, instead of half a page of stack trace and a "numpy not found". I'll check and see if I did that or not...

Sorry for taking so long, duty called.
So what I'm getting now is this on all 3 of arhi's commands.
I cd to DuetLapse and tried again but got the same error.

E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), are you root?

luckyflyer

I think I fixed it by putting sudo in front of all 3 commands, testing now.

luckyflyer

I ran a small 30 layer print, played the file with vlc player and its just a blank screen. Of the three files only "sudo apt-get install libatlas-base-dev" was not present on the pi but I still get a blank screen. Are any of the 4 usb ports ok to use or just a specific one?

Danal

Any port. If you haven't run DuetLapse again, and have not rebooted, all the stills are in the /tmp directory. You can look at them individually, and/or re-assemble them into a video.

luckyflyer

All of the stills are in the temp directory and look good on my standalone pi. How does one reassemble the stills into a video?

Also on my Duet pi I'm still getting this,

Python Library Module 'numpy' is required.
Obtain via 'sudo python3 -m pip install numpy'
Obtain pip via 'sudo apt install python-pip'

When I run #2 I get,

/usr/bin/python3: No module named pip

When I run #3 I get

python-pip is already the newest version (18.1-5+rpt1).

Seems like I'm very close to it working but not there yet.

arhi

@luckyflyer said in DuetLapse available for Alpha testing:

. How does one reassemble the stills into a video

use ffmpeg

ffmpeg -r 12 -i /tmp/DuetLapse/IMG%08d.jpeg -vcodec libx264 -y -v 8 finalvideo.mp4

luckyflyer

Thanks, just enter as you posted on the command line?

luckyflyer

I c&p "ffmpeg -r 12 -i /tmp/DuetLapse/IMG%08d.jpeg -vcodec libx264 -y -v 8 finalvideo.mp4"
into terminal, Now I have finalvideo.mp4 in /home/pi. But it's still the same, when I play it on the pi with vlc the video is blank.
Is it possible to export the video to windows and try it there?

arhi

@luckyflyer did you look at the images in /tmp/DuetLapse ? you can copy those to windows and check if the images are ok

luckyflyer

I looked at them on the pi and they look good.

luckyflyer

I started over from scratch with the latest Duet image, burnt it to a sd card, did all of the updates, reinstalled all of my .g files and macros. I then reinstalled Duet lapse only this time I installed all of the corequisite items first and then all of the other files. It had an error at first, rebooted and now it seems to be working as it should. The jpg's are in temp, when the print is finished I'll try vlc for a movie. Wheew!

luckyflyer

Downloaded vlc to Duet pi but when I playback the video is blank, the vlc hazard cone stays on the screen. Is there a setting in ffmpeg that needs to be changed?
Is there a better/simpler way to transfer files from pi to pc than samba?

arhi

samba is simplest way IMHO

winscp works great too, especially if you want to access temp directory directly

those ffmpeg parameters normally work, did you check if the images are ok? If the images are not ok then ffmpeg can't create the video. Copy the images to the PC and check them out if they are ok.

arhi

@Danal I added graphicsmagick to the pi and now I'm generating video that looks like this

now to find good place for the two cameras

https://youtu.be/aDZHhJkSI6E

luckyflyer

@arhi said in DuetLapse available for Alpha testing:

samba is simplest way IMHO

winscp works great too, especially if you want to access temp directory directly

those ffmpeg parameters normally work, did you check if the images are ok? If the images are not ok then ffmpeg can't create the video. Copy the images to the PC and check them out if they are ok.

All of the images look good. How do I copy them to the pc, copy and paste doesn't work. I haven't installed Samba yet, is that the only way?

arhi

@luckyflyer
you can install samba, it's rather simple, for e.g.
https://pimylifeup.com/raspberry-pi-samba/

but even faster, get yourself winscp
https://winscp.net/eng/download.php

login with same credentials as you would ssh to the pi and copy the files

this requires ssh to be enabled on the pi (it is not by default), to enable ssh if it's not enabled: https://www.raspberrypi.org/documentation/remote-access/ssh/

Danal

Sort of.

You can

sudo apt-get install samba
sudo smbpasswd -a pi
sudo nano /etc/samba/smb.conf # and change 'read only = yes' to no. It is fairly far down in the file.

Then, on your windows machine,use a UNC like '\192.168.7.101\pi' in windows explorer, or an editor, or whatever. This is not a pure SAMBA "net share" in that there is no drive mapping. In my opinion, it actually works better...