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I have a webcam that works as a v4l2 device.

What is the most convenient way to capture either a stop-motion or time-lapse video?


stop-motion and time-lapse are related but conceptually different.

Time-lapse is where you take a photo of a scene at a set interval and then combine it into a video (that looks like it's going really fast).

Stop-motion is where you control the scene and take an image for every change you make, to form an animation (eg Wallace and Grommit).

An application for time-lapse needs to be able to take a photo at a set interval.

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7 Answers 7

up vote 20 down vote accepted

Capturing a zillion images.

The first step is capturing images. Let's imagine you want to take a photo once every 10 seconds and save that into a directory sitting on your desktop

mkdir ~/Desktop/cap
cd ~/Desktop/cap

We use streamer to do the capture so let's install it:

sudo apt-get install streamer

And now we want to capture

streamer -o 0000.jpeg -s 300x200 -j 100 -t 2000 -r 1

-t is the number of frames we want to capture. -r is frames per second. So this should grab one frame every second. If you compress that down into a 30fps video, one minute of capture becomes 2 seconds of video. You'll want to tune this appropriately depending on how much output video you want.

That line will give you 2000 images, it'll take half an hour to record and, at 30fps, will generate just over 1 minute of video.

Putting it all together

I'm going to use ffmpeg. There are many different ways of putting it together including mencoder but I just prefer ffmpeg's outlook on life. After installing it (sudo apt-get install ffmpeg) just wang out this:

ffmpeg -r 30 -i %04d.jpeg -s hd480 -vcodec libx264 -vpre hq time-lapse.mp4

The quality settings there aren't anything like that of my webcam so you might want to play around with the options a lot more to get a better encode, but that should generate you a nice 30fps video, compressed up in x264.

You might want to play around with the framerate (-r) but I wouldn't go below 15fps.

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Every ten seconds would need -r 0.1. –  Seppo Erviälä Jun 25 '11 at 10:34
This is what I was looking for. Thanks! –  Seppo Erviälä Jun 25 '11 at 10:34
man streamer doesn't describe ehat each parameter does. Where can I get information about j parameter? How could I make it capture until I press CTRL+C, with given FPS? –  Tomáš Zato Mar 30 at 17:13
@oli ffmpeg doesn't work anymore for me. What should I use? –  Tim Apr 11 at 13:31
@Tim The "ffmpeg" command is in constant flux (it has actually been another application called avconv in disguise for a long time though I think it has shifted back now). The syntax of these two commands has forked apart and changed over the years (as have the codec names). I'm not in a good position to test (I don't have a stock ffmpeg setup) but I'd suggest adapting from their wiki, ie: ffmpeg -framerate 1/5 -i img%04d.jpeg -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4 - let us know what works! –  Oli Apr 11 at 13:51

gTimelapse (Download Link)

enter image description here

An application for capturing images to generate timelapse videos, built on gPhoto2 and wxWidgets libraries.

Compile instructions

Download the source from the sourceforge website

in a terminal type the following:

cd Downloads 
gunzip gtimelapse-0.1.tar.gz
tar -xvf gtimelapse-0.1.tar
cd gtimelapse
sudo apt-get install build-essential libgphoto2-2-dev libwxbase2.8-dev libwxgtk2.8-dev gphoto2
sudo make install

To run the application type

gtimelapse &

n.b. 1

gphoto2 --list-cameras | more

n.b. 2

see this blog for further useful info

lists all compatible devices that the application supports

n.b. 3

I've read the gphoto2 does not support webcams - I'll leave this answer visible anyway just in-case anyone wants to try this answer with a decent digital camera instead of a webcam.

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It took quite some time to fetch and compile wxWidgets with all the prerequisites. I also compiled gTimelapse but it just crashes with: [Debug] 13:21:12: ./src/common/menucmn.cpp(859): assert "item" failed in Check(): wxMenu::Check: no such item [Debug] Generating a stack trace... please waitTrace/breakpoint trap –  Seppo Erviälä Jun 25 '11 at 10:23
ok - I'll have a go sometime today to build myself - I'll add some instructions to my answer (assuming I can myself get this to build). –  fossfreedom Jun 25 '11 at 10:27
This is actually quite helpful since I have a digital camera supported by gphoto2. I didn't know a library like this existed. –  Seppo Erviälä Jun 25 '11 at 16:56

To capture every X amount of seconds from a webcam use motion.

Install motion

sudo apt-get install motion or sudo aptitude install motion

Configure motion for every X amount of seconds

sudo nano /etc/motion/motion.conf

Change the variables minimum_frame_time and snapshot_interval to the same amount of seconds you wish to take the picture with the webcam.

10 Minutes = 600 Seconds
20 Minutes = 1200 Seconds
30 Minutes = 1800 Seconds
1 Hour = 3600 Seconds
2 Hours = 7200 Seconds and so on...

run motion with sudo motion stop it with CTRL+C

NOTE - Configure motion.conf to save the files in another directory than the default /tmp. For example your home folder. Since going to /tmp needs more privileges. You will also find many useful options in the motion.conf for many other things you might like.

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That's far better than streamer. Not sure I like a must-have-root solution, and it seems like I lose the ability to use it like a rear-view mirror, but it is far better than streamer, and might solve another problem I've been wanting to look at, which is only taking a picture if I'm there. Will mark this solved if I can fix the other problems. –  VarLogRant Apr 6 '11 at 16:57
Actually you do not need root access to use it. You only need root access to edit the config file. –  Luis Alvarado Apr 7 '11 at 11:55
I suppose if you want to write to the default path, it might be necessary, too, but that's the first thing I changed. Thanks. –  VarLogRant Apr 7 '11 at 15:27
No problem buddy. Glad to help. –  Luis Alvarado Apr 7 '11 at 16:27
I tried it. It worked OK. I might try it again at some point. But it did not give me the rear-view aspect, which I value more than the automated picture taking. So, I'm running Cheese right now. –  VarLogRant Apr 12 '11 at 14:48

I've used Stopmotion to do this, it's in the software center. You can also capture with Cheese, but you have to alter Cheese's configuration to boost the max number of images. I found it easiest to just use Stopmotion for the entire process.

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The best and easy way to do this is by installing Motion. It's full-scale surveillance software for Linux-based operating systems.

Install via the software center

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You should be able to set up motion (in motion.conf) to stream - by default it streams on port 8081. All you then have to do to get your 'rear view' mirror is to open VLC, "Open Network Stream" and point it at http://localhost:8081.

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Camorama is a webcam viewer/recorder which I've used to take pictures, at 1 minute intervals and upload them to a webserver, from my webcam; it's a straightforward setup. Also it's available in the Ubuntu Software Center or you can install it using:

sudo apt-get install camorama

Hope this helps.

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Sorry, just saw that you had written the your webcam doesn't work with Camorama. –  kicsyromy May 30 '11 at 16:54
Could you please explain in more details? Man does not cover timelapse option :( –  Michal Stefanow Oct 7 '12 at 17:40

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