How do I get started creating a custom GTK widget (using python)?

This is kind of a GTK question in general but I have only used pygtk so keep that in mind if it affects the answer. I have got the hang of the basic GTK widgets, but I now have to implement...

ffmpeg: concat videos and images

I have 2 videos (same resolution, same encoding) files that I want to concat and I want to insert some text for 3 seconds between them, as a splitter. I'm doing this with ffmpeg on...

Nodejs ppa:Chris-lea/node.js fails

Given a nodejs.makefile which contains the commands to install nodejs/npm & some npm packages, such: nodejs: sudo add-apt-repository -y ppa:chris-lea/node.js #install fresh nodejs sudo apt-get...

Openshot crash importing picture

It is about some days that I like to use Openshot like before in Fedora to make animation from pictures but just after importing pictures to the app it crash. I could not find any clue to fix...

Get a color wheel for MLT color grading in Openshot with Movit

I'm trying to make an effect in openshot for lift-gamma-gain based colorgrading. I downloaded the latest Movit library and put it on the rigth plaece, MLT and Frei0r is installed and openshot is...

What is the limits of OpenShift database usage?

I recently start trying OpenShot, coming from Heroku where they give a very limited free database storage, I'm wondering what is the limit of OpenShot's database storage, does it just has to fit...

Bash - Insert number variables into command

I've been wanting to have a count-up timer overlaying a video but all I could find online for doing so was using Adobe After Effects which isn't really an option as I'm on Linux and am unwilling...

get producer from python

I am customizing now OpenShot to change brightness of video. I already figured out that I need to add sws_getColorspaceDetails / sws_setColorspaceDetails​ functions to convert_image() of...

ffmpeg: How can a MOV with transparent background be created?

I'm trying - with no success at all - to convert the green pixels of a background into transparent ones and output the result as clip with ffmpeg. N.b. I do not want to lay the clip over anything;...

ffmpeg: How to limit bit rate of video output?

To a 2GB raw video file taken in front of a greenscreen I want to add the alpha channel. My problem is: the output files appear much too large to me (about 20-fold the size of the input), and...

openShot installation Error-archLinux

I wanna install openShot video editor for my arch-Linux but getting following error. Please, someone, help me out. pastebinLink: https://pastebin.com/sDEEVJNk <iframe...

Wipe image in and out with ffmpeg / imagemagick

I'd like to create a wipe in/out from left to right effect with ffmpeg and/or ImageMagick that is common to most video editors. (e.g. Adobe Premiere, Final Cut Pro and even OpenShot) Some might...

Why are these symbols not found?

I am trying to compile libopenshot on MacOS. When I run the build I get the following error during linking: → make VERBOSE=1 ... /usr/local/bin/g++-4.9 -std=c++11 -g -ggdb -fopenmp ...

Export .osp OpenShot project to ffmpeg script as workaround to video export freeze or crash by swap hell

I have a big video rush 35". With OpenShot i've cut more than 30 small sequences and concatenate them into one 25" sequence. Now i try to export the result as video file but OneShot randomly crash...

correct video brightness in selection

I made a video of a conference talk but the speaker is quite dark and the presentation is perfectly bright as the camera was adjusted to the presentation area. How can I correct the brightness of...

How to use Open Shot video API with ruby

I have been looking at the LibOpenShot for some video creation using Rails. The repository states that they have bindings for Ruby, but I cannot find any reference to ruby, e.g. a Gem Does anyone...

Kazam: Screencast, then editing: Lost quality and increased size

I recorded a small screencast with the tool Kazam on Ubuntu 18.04. I am amazed: 7 seconds have only 73kByte. Format: webm Now I edited the screencast: I cut some seconds at the end. I did this...

Missing tkinter package on ubuntu 18.04

This python script has a problem with tkinter but I don't know how to fix it as tkinter is installed, searched on the web but didn't find anything useful [email protected]:~$ python3 predict.py...

How to create video with incorrect mediainfo?

I need to create some correct videos with incorrect mediainfo for testing. For example, halved bitrate or framerate, resolution 1920x1000 instead of 1920x1080. How can I edit mediainfo? I...

How can I render a mutable video to a PyQt widget?

I am working on a video editing application in python using PyQt. I want to be able to make "clips" out of video files and have the ability to concatenate these clips to render a new video. I have...