I want to take live camera feed (from webcam or other source) and apply a chroma key effect in order to remove the background (i.e. green screening) and then want to replace the background with a different image or video. See examples below:
Original footage
Edited footage
I then want to save this output to an image or record a video from it. Is any software available to do this?
For various reasons (possibly this bug) a Deja Dup backup I made failed. I have been following this guide to restore my backup by hand. The steps have been:
In the folder containing the backups run:
for t in duplicity-full.[yournumbershere].*.difftar.gz; do tar xf $t; done
This gave me two folders: multivol_snapshot and snapshot. In the multivol_snapshot folder are all of my files but split up into smaller files. I could join each manually by running cat * > file.txt but this would take a very long time. The page provides a script called duplicity_join.py which joins them together. However, it doesn't preserve the folder structure and so any files or folders with the same name get overwritten.
Is there an existing method available for joining the files automatically that preserves the folder structure?
I recently shot some very shaky video footage using my DSLR camera.
http://vid1377.photobucket.com/albums/ah44/hellocatfood/MVI_3154_zps6fri0edh.mp4
I usually use a tripod for stability but the situation meant I did not have one available to me. Whilst searching for ways to stabilise the video I came across various tutorials that reference using either vid.stab and/or kdenlive/MLT. The results it produced were a bit odd.
http://vid1377.photobucket.com/albums/ah44/hellocatfood/MVI_3154-stab_zpsbbqnr0qm.mp4
I used the following settings
For comparison I asked a friend to stabilise the same video using the Warp Stabiliser found in Adobe Premier Pro.
http://vid1377.photobucket.com/albums/ah44/hellocatfood/Stabilised%20MVI_3154_zps4e3obbot.mp4
They used the following settings
[
]
The artefacts I noted are similar to what is described in this video. The video, when stabilised using vid.stab appears a bit warped. I appreciate that no software will produce an incredibly smooth video but I am left wondering, is there any open source software, GUI or command-line, available for Ubuntu/Linux that can effectively stabilise video using a process similar to the Warp Stabiliser found in Adobe Premier Pro?
123D Catch is an app for Windows, OSX and Android that lets a user turn a series of photographs into a 3D model (a process known as photogrammetry).
Is there an alternative, preferably with a GUI, available for Linux/Ubuntu?
I am running Ubuntu 15.04 on a Dell XPS 13 from 2013. Since 13.04 I sometimes get accidental middle clicks/middle click emulation. I can tell this is happening because text in my clipboard pastes itself (default behaviour on Ubuntu) at random times.
Can anyone tell me why this is happening and how I can disable it?
Processing is an open-source language and environment for learning the fundamentals of electronic art and computer programming.
Its Linux download package includes a file called processing that, when run, opens the main Processing IDE.
How can I add this program to the Unity launcher in Ubuntu 13.10?
Despite being an Ubuntu user for many years, for several years I have been using Picasa on Windows to make photo collage grids of my photos.
The process for doing this is to select either a folder of photos or a number of photos and press the "Create Collage" button. The photos are usually arranged by date taken (which I prefer), but this can be changed by manually rearranging them. The results look like this:
Click here for a bigger version
Is there native software - i.e. doesn't require Wine or run in a browser - with a GUI (for easy editing) available for Ubuntu that can make collages in the same way?
I want the play counts for songs in my Rhythmbox library to be the same as the play counts in my Banshee library (and vice versa). How can I do this?
After reading this article from Instructables I wanted to try it out in Ubuntu. Luckily QSSTV is available but I'm having problems getting it to work properly.
When pressing the green light (to receive data) I get this error:
After going to Options > Configure > Interfaces I discovered that it's attempting to use /dev/dsp which doesn't appear to exist.
In my /dev folder there are no files that reference sound devices and I've tried all of the devices in /dev/snd but unfortunately none of them work.
Is there a specific audio device that I should be linking to?
Are there any color scheme generators that can simulate color blindness and export these results to a color palette file or generate a css stylesheet ? I've used Gpick and was recently introduced to this website but I'm really after a desktop application (for when I'm not connected to the Internet) that can generate color schemes.
Are there any applications that can do that?
In Ubuntu 10.10 (and possibly previous versions), when I connected my laptop to an external source (monitor/projector) and set it not to clone my desktop the display on the external source would not show the (gnome-)panel (just a full-screen desktop with no icons).
Since upgrading to Ubuntu 11.04 (using Unity) when I now connect the external source has the panel on there. Is there any way to revert to the previous behaviour in 11.04?
Is there native software similar to Comic Book Life for Linux? If you've ever used the software you'll see that it's specially designed and optimised for easily creating simple comic books. I've already tried using Inkscape and GIMP (with some custom templates) and whilst they allow for finer control of graphics they're far too complex for the task at hand
I've been a illustrator and graphic designer for a number of years and now I'm looking to go more into motion graphics and visual effects. Is there anything that is open source/free (not a demo, education version or trial) that is as complex and feature-rich as Adobe After Effects but for Linux? I've tried Cinlerra, kdenlive, openshot and Blender and whilst they are good at video editing (and 3d modelling in Blender's case) they fall short in effects and compositing features.
I've also tried Ramen, but the project recently closed and the last update was quite buggy.
Also, CineFX/Jahshaka doesn't work and hasn't been updated in many many years, so don't mention it ;-)
I've plugged in a projector into my laptop and I'm attempting to extend the desktop onto it (so that I can run a full screen app on the projector and have the controls on my laptop).
I'm able to mirror the screens effectively (it does this by default) but I can't extend it. When I untick "Mirror screens" and press apply it asks me to log out and then back in again but it goes back to mirroring the screens.
I'm able to extend desktop on to my external monitor at home, just not this projector. Is there a manual way or other way to do this other that through Monitors setting?
My computer model is Dell Studio 1555: Pentium Dual Core T4300(2.1GHz,800MHz,1MB), 4096MB 800MHz DDR2 Dual Channel, 512 MB ATI Mobility RADEON HD 4570 using the ATI proprietary driver. My screen resolution is 1366x768 (16:9)
The projector that it wont connect properly is a Hitachi CPX3. That page specifies that it's especially designed for projectors that use 16:10 aspect ratio, but considering my external monitor at home uses 4:3 should the differences in aspect ratio matter or be causing this error?
I'm attempting to use the LyZ plugin for Zotero and LyX and it requires the LyX server to be present.
I've looked on the LyX wiki for information and it makes reference to .lyxpipe.in and .lyxpipe.out but these are not present when I install LyX from the Ubuntu repository.
What are these files and how can they be created?
I'm attempting to use easycap to record from my camcorder but I'm having a slight problem. Using their test script I'm able to get audio and video. I've noticed that in the script on line 159 it makes a call to "DEV_ADUIO", which is reported as being "plughw:2,0".
Exactly what is this device? Is it located in /dev/ somewhere?
I've done ls /dev/ and I can't find anything that would suggest an audio device
I am attempting to install and use fbgrab, but it requires /dev/fb0 to exist. How can I create this file?
My computer specs: Dell Studio 1555, ATI Radeon 4500, proprietary graphics driver
I'm an artist specifically focussing on glitches and errors and I'm currently trying to find a way to create images like this that were made by taking screenshots of what is currently in vram. Is it possible to do this in Linux/Ubuntu? If so, how?
I'm making a video and I want to do keyframed speed changes. That is, I want to have a video gradually get faster or slower at different points. I have been a user of kdenlive for awhile but have unfortunately found that is unable to do this. Can any recommend software that can definitely do this?
I'm considering delivering online art tutorials and was thinking of using Lernid when I noticed that it's specifically for Ubuntu-run/related events. Is there any desktop software similar to it?