Questions tagged [video]

related or about the video issues, the range varies from playing a video file, the formats, tools to work with it in *nix operatin systems up to issues surrounding it in specific environment (ie. console, framebuffer, X11 ...)

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Deepin Movie Doesn't Play Video After Deepin Installation

I have just installed Deepin a few days ago and tried playing videos using Movie App for the first time. Videos play smoothly in Youtube, when mp4 files are dragged to any browser (Chrome, Firefox, ...
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1answer
1k views

GParted live graphical mode not working

I want to run GParted live 1.0.0.3 on a laptop with both an integrated and discrete graphic card. I managed to start GParted using the "vga=normal" boot option, but X refuses to start either if select ...
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How do I access the composite port on a SAA7146 based capture card?

I'm trying to digitize some old VHS tapes with some equipment I already have. It's only a few tapes, so making a big investment to get it done is a bit cost prohibitive. And all the available services ...
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1answer
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Why do the command cvt and gtf give different frequency values

I am trying to setup a xrandr mode line for a X display but in attempting to find the appropriate parameters, I note there are two different calculation programs (see below). Why the difference in ...
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How do I fix video playback in debian?

I downloaded some mkv videos from my google drive using rclone but when I play them they all have this green overlay effect, I know for a fact that the videos aren't corrupted because I downloaded ...
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Camera stops working on Ubuntu 20.04

I have a USB camera and it's behaviour is really weird. I test it on the webcam testing website, and after giving priviliges to the website everything goes well, the camera works just fine. But I ...
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2answers
2k views

trim and fade in/out video and audio with avconv (or different tool)

I'm using avconv for trimming and converting videos. Let's say I want to drop the first 7 and last 2.5 seconds of the video stream and one audio stream of an one-hour mts file: avconv -i input.mts -...
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6answers
16k views

How to rip a scratched DVD-Video? (a “cdparanoia for DVDs”)

I usually use the very nice and simple dvdbackup program to rip and backup my DVD-Video. However some of my DVDs have a few scratches and my DVD drive has some trouble reading a few sectors. So, is ...
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1answer
140 views

Playing pdf with embedded animations

I have been trying to find a PDF viewer in Linux with the ability to play embedded animations (with the video data saved into the PDF). I have read tens of forum questions and tried many different ...
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1answer
2k views

Why am I losing audio on VLC when playing HQ videos?

I am having a problem with VLC when I play HQ videos (720p and higher): when I try to look for a particular scene (say I am playing a movie and want to get to go to 30 minute mark) the sound goes off. ...
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1answer
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Within VBox guest cheese does not show video, even if it apparantly sees camera

I am running Pop_OS, an Ubuntu 18.04 LTS based distro, on the physical machine. My webcam works, Cheese shows the video, videoconferencing works like a charm. Besides I have Virtual Box 6.1 guest ...
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7answers
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GIF screencasting; the UNIX way

To take a static screenshot of a selected part of my screen, I often use scrot with -s shot.png. This is great for adding illustrations to StackExchange posts. I even found this script to ...
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1answer
175 views

ffmpeg v4l2 driver changes framerate of Logitech c920 camera

I own a Logitech c920 camera which seems to be able to do at least 24fps for 1080p (although the specs say it should go up to 60), according to vlc -vvv --color v4l2:///dev/video0 --run-time 1 vlc://...
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How can I reduce a video's size with ffmpeg?

How can I use ffmpeg to reduce the size of a video by lowering the quality (as minimally as possible, naturally, because I need it to run on a mobile device that doesn't have much available space)? I ...
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1answer
1k views

Turning off default video output with xrandr when external monitor is connected

I'm new to bash scripting, and I'm trying to configure my video outputs so that my laptop display gets turned off when I connect an external monitor via VGA. That's the script I came up with, pretty ...
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4answers
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How to set the resolution in text consoles (troubleshoot when any `vga=…` fails)

It is a common way to set the resolution of a text consoles (that are usually available by Ctrl-Alt-F1 thru Ctrl-Alt-F6) by using a vga=... kernel parameter. I'm using Ubuntu 10.04 Lucid, output of ...
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1answer
1k views

How do I run webm video file in firefox using HTML5 on linux?

I am using apache server on linux and want to run a .webm video file. I have .webm video file which i am trying to run in firefox (V 12.0) using HTML5 but the browser is showing as "no video with ...
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2answers
13k views

Playing a remote movie on the remote computer

I have two computers (a desktop and a laptop) running linux connected to my local area network. I like to ssh from my laptop over to my desktop and run programs there, and sometimes listen to music on ...
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0answers
35 views

What is a straightforward way to implement background blur on Zoom calls for Linux?

I've been trying to blur my background for a while for Zoom meetings. I've come across several packages that should be able to do that but I haven't had any luck so far! I was told OBS would be able ...
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0answers
60 views

Recording screen with pulseaudio causes desyncs

Following the ffmpeg's Capturing Desktop guide for linux, when audio source is pulse format it causes frame freezes and desyncs, fps slows down, and video is delayed compared to audio. I have tried ...
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68 views

Mysterious problem on setting up Reverse Prime (NVIDIA Optimus offloading through OutputSink) for an HDMI external monitor

I just recently decided to try Prime (NVIDIA offloading applications to its gpu, while system using integrated gpu, in my case Intel HD630) on my Slackware-current laptop, and soon I discovered that I ...
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5answers
902 views

How can I watch Netflix on Linux?

I recently installed Fedora 14 on my home PC so I have a dual boot system running windows and linux. I probably would primarily use Linux on that machine as its older and Linux manages its resources ...
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4answers
49 views

Is It Possible To Track GPU Performance Increase?

CentOS7 I'm about to upgrade my gpu. Before I take action I am curious if there are any tests I can run on the cli that will track the performance of my current gpu so I can compare to the new gpu? ...
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1answer
22 views

efficient way to compose all frames in a video to a single image

I've got a 720p video file that is about 20 minutes long. I want to compose each frame in the video using a single operator (e.g. lighten, darken, etc.) to produce a single image output. My thought ...
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0answers
18 views

v4l2sink does not appear in OBS

I'd like to send OBS audio input and video to Zoom. I followed this tutorial closely and got everything working. However, I still don't see v4l2sink in OBS under Tools. Similarly, I can now select a ...
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17 views

Record speech time in video conferences?

We all use a lot of Zoom, Skype, Meet these days. I tend to talk more than I want to when in online meetings, so I was wondering if anyone has ideas on how to quantify how much I actually talk during ...
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1answer
2k views

Download error with youtube-dl and axel

I am trying to download following video: https://www.youtube.com/watch?v=pQWj2Fgxdrc by combining 'youtube-dl' and 'axel'. I am trying to download this video in such a way that I want these two ...
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1answer
27 views

nginx erratic error “111: Connection refused while serving video file”

I have this server, a debian 10 arm64 machine on which I host an asp core 3.1 video streaming website. Overall it is working just fine except that sometimes when playing a video, for some reason nginx ...
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1answer
21 views

Capturing all frames with VLC scene-filter

I'm attempting to use VLC's scene-filter to extract all frames from an mp4 video. The video in question runs at 25fps, and is precisely 38s long. In the command line, I ran with options: --video-...
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1answer
24 views

ROS Camera Calibration GStreamer Error

I have a VM with ROS Noetic installed and I want to run a camera calibration on my USB Webcam. I followed the following guide and for the launcher, I put the following code: <launch> <!-- ...
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1answer
27 views

How to use on-board graphics and graphics adapter card simultaneously?

I have an ASUS TUF B460 mobo with an i7 10400K CPU. I also have an EVGA GeForce GT 710. I have two HP ZR30w monitors capable of 2560x1600 each. I am not a gamer, I just want both monitors to be active,...
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466 views

Fullscreen glitch / problem / blackout when using online video (Youtube, Netflix) on browser (Firefox, Midori, Chrome) elementary OS

I'm a bit new to linux environment but I did all the research I can before posting here. I will just go to the point. When I open a Youtube or Netflix video (and sometimes other fullscreen apps like ...
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1answer
1k views

One physical device mounts two /dev/video devices; which will cause fswebcam to throw an ioctl error? [duplicate]

The presenting problem and symptoms: I've found that for each individual physical USB web camera I attach in Raspbian, a pair of such /dev/video devices is created. When I try to capture an image ...
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0answers
11 views

How can i give a video out as web camera device? [duplicate]

Some apps need a webcam and i would like to feed them a dummy "device" which is just a video on loop. How can one do this?
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2answers
1k views

Convert video to exactly the same format as another video

Suppose I have two video files A and B. Now I want to convert A to the same format (i.e. same container, same audio and video codec), same bitrate, size etc. as B. Is there a way to do this ...
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1answer
2k views

Ffmpeg problems on centOS 5.8 64 bit

I did install ffmpeg with winff, unsuccessfully when I try converting avi to x264, it says I don't have it. When I try to convert mp4 to Xvid I get unknown encoder 'libxvid'. It's like nothing really ...
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0answers
70 views

Suppressing error message “uvcvideo: Failed to query (GET_CUR) UVC control”

The tech support of the USB camera we use, Intel Realsense, says the error message in subject is benign (github.com/IntelRealSense/librealsense#7099). But as I started a conversation on the same forum ...
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1answer
6k views

How to install AMD Proprietary Drivers on Manjaro?

I'm using Linux Manjaro 0.8.13 on my laptop and want to install proprietary drivers. Here is what I have: efog# lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation ...
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2answers
2k views

Live Streaming and Broadcast Video Server

I am trying to setup a live stream multimedia server something like Youtube live stream or https://twitch.tv that users can stream their webcam their desktop and so on. I am searching a lot in the ...
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0answers
15 views

Custom resolution does not work in vega

Im trying to make customs resolutions based on the xrandr, but when trying the relutions via the display utility, it gets a black screen only. I dont know if this could be a issue of the driver or the ...
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2answers
5k views

How to restart a failed amdgpu kernel module

My video card crashes from time to time. It's quite annoying but I live with it -- usually I just restart the graphics with sudo systemctl restart lightdm.service, or if needed reboot the whole system....
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1answer
59 views

LibreOffice distorts embedded videos

I'm using LibreOffice Impress on Arch Linux to make a presentation. When I embed a video into my presentation, the video initially plays fine, but gets distorted after a few seconds. The distortion ...
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2answers
6k views

Driver installation NVIDIA GeForce 940-mx not possible

This is a really specific question, I have come here before because of it but now I really think I am out of options and trying to see if anyone has experience with this specific video card. Have ...
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1answer
4k views

How to enable graphics acceleration for SIS 771/671 on Zorin OS 8 lite (lubuntu 13.10)

Anyone knows how can I check/test my 2d acceleration? See if it's on/off and working correctly and as efficient as it should? I have SIS 771/671 on Zorin OS 8 Lite. I believe the resolution should be ...
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2answers
1k views

Stream video with ffmpeg to icecast?

Is there a simple way to stream video with ffmpeg into icesast? Source video is in video/x-matroska format. Streams themselves are in various formats (mpeg, vorbis, aac, etc.). I want ffmpeg to guess ...
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1answer
25 views

How can I reencode a video's audio when it was recorded in stereo with a mono source?

I have a video that I recorded with an interface using an XLR microphone (mono). The video recording software (Simple Screen Recorder), and my PulseAudio all saw that as a stereo source. Now I have a ...
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0answers
30 views

Can't access IR video stream on mini camera

I bought a "IR capable" camera (https://er-estavel.com/product/1080p-hd-mini-kamera) but I can't get the IR part to work on Linux (current Archlinux). v4l2-ctl --list-devices gets me: ...
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0answers
29 views

What libs does gThumb need to play audio and video files?

I've installed APT version of gThumb and have found out that it fails to play audio and video files (with the Audio/Video support extension enabled). Several days ago, when I had a lot of apps ...
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1answer
2k views

error ffmpeg Cannot open display :0.0+0,0, error 1. :0.0+0,0: Input/output error

Hello I get this error when i want to capture my screen on linux with ffmpeg ubuntu 16:04 : the command i'am using : $ ffmpeg -f x11grab -r 15 -s 1920x1080 -i :0.0+0,0 -vcodec rawvideo -pix_fmt ...
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1answer
874 views

How to enable HW acceleration in Celluloid video player in Linux Mint 20?

I have this graphics card in my Dell laptop: GPU: NVIDIA, GeForce GTX 1060, Max-Q Design, 6 GB GDDR5/X VRAM which has the basic specification as follows, and should be capable of handling hardware ...

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