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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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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Skype for Linux (8.55.0.141) does not recognize either audio or video devices anymore [closed]

Skype for Linux used to work perfectly until I performed some upgrade. I am afraid that I can't be more specific regarding the old version of Skype (which was fine) as well as the various system ...
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Broadcast Camera stream over 5G Wifi network to multicast address using FFMpeg

I am trying to stream my Intel RealSense D435 RGB camera input to a multicast address on my network. Please note, video streaming, encoding, is very new to me - I do not understand much, when ...
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Stream Intel RealSense camera to network using Raspberry Pi 4 with FFMpeg

Good day all So I have trying to stream my Intel Realsense D435 camera to my local network. After reading up on many different sites, tutorials, etc I figured out the following: What can I do with ...
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1answer
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ffmepg - How to reduce size of video with many still images

I have many videos that contain mostly still images with almost no motion. Only in some sequences there are animated scences with much motion. Now I want to reduce their filesize, but ffmpeg with crf ...
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How to share audio and video via video-chat software on linux?

Me and my friend are both using Fedoras latest version (at the moment 31) and want to video chat with monitor/sound sharing, so we can watch a movie together. I've tried several options to meet this ...
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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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5answers
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Loop MP4 From Converted Animated Gif

How do I convert animated gifs to mp4s that loop? This command successfully converts the gifs to mp4s, but the loop doesn't appear to work: for i in *.gif; do ffmpeg -f gif -i "$i" -loop 0 "0output$...
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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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How to add an still image while combining multiple audio files in FFMPEG

I combine multiple audio files with FFMPEG as ffmpeg -i 1.mp3 -i 2.mp3 -i 3.mp3 \ -filter_complex '[0:0][1:0][2:0]concat=n=3:v=0:a=1[out]' -map '[out]' out.mp4 Then, I add a still image to the ...
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How to recover a broken mp4 file: moov atom not found

I made a recording with ffmpeg -f alsa -ac 2 -i plughw:0,0 /tmp/audio.mp4 I then moved /tmp/audio.mp4 to another directory (/root/audio.mp4) without stopping ffmpeg leading to a broken .mp4 file: ...
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How to merge two .MTS files in Linux

I have two video files from a Panasonic camera in .MTS format and I want to merge them into one file and burn that file onto a TV-playable DVD. I tried importing them into kino and merging them, but ...
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32 views

Intuitive image sorting

I have photo collections (consisting of several photo sets each) where all the file names have been randomised and where files have been modified in random order so that sorting them by file name or ...
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1answer
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ffmpeg creates a broken video

The video created by this command: ffmpeg -y -framerate 25 -i picture.png -i sound.wav -vcodec libx264 -crf 20 -preset medium -acodec aac -vf scale=1280:-2,format=yuv420p output.mp4 is not accepted (...
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1answer
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desktop freezes

My System: Arch 4.8.8-2 Gnome 3.22.2 Graphics card: Radeon HD7770 Graphics driver: radeon (xf86-video-ati-1:7.5.0-1) Since I did an update, my screen freezes after some time, most ...
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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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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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New SuSE install intermittently freezes

I've just installed the latest Gnome SuSE from their website (downloaded from their site yesterday). I grabbed the LiveCD, put it on a USB stick, booted from it, and used the included installer to ...
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1answer
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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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1answer
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“MPEG-1/2 does not support 3/1 fps” when sending webcam to ffserver

I am unable to send a stream to my ffserver. I started the server with ffserver -f /etc/ffserver.conf & where ffserver.conf has not been modified. I tried sending a webcam stream with ffmpeg -...
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1answer
728 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
533 views

How can I record my desktop into a “replay buffer”, so I can replay the last x seconds?

Today I learned of a Windows-only product today called the Overwolf Replay HUD, which lets the user press a key to replay the last 20 seconds of happenings on their screen. It's meant for people ...
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1answer
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Ubuntu 16.04 / 18.04 video playback lags / stutters

Since some weeks (I didn't use the video playback on this machine for quite a while), I experience lagging/stuttering while playing videos, regardless if it is in a browser or in Ubuntu videos, only ...
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1answer
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Old ATI Video Card on Debian 8 - Xpress 200 - model: 1150

Well, my problem is very complicated, I've an old machine (Dell Vostro 1000) where I'm using Debian 8 with XFCE. This machine have an integrated video card (ATI MOBILITY RADEON XPRESS 200 - Model: ...
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2answers
6k views

Merge multiple flv files?

What tool in Linux can I use to merge multiple flv files ? Files are already in order, just put them altogether seamlessly
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4answers
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Trouble getting VLC to record from the webcam via command line

my ~/.bashrc contains the following function webcamrecord () { vlc v4l2:// :v4l-vdev="/dev/video0" :v4l-adev="/dev/audio2" :v4l-norm=3 :v4l-frequency=-1 :v4l-caching=300 :v4l-chroma="" :v4l-fps=-1....
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2answers
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Deactivate Nvidia Graphic-Card CLI

How can I deactivate my dedicated NVIDIA gc via CLI? My Laptop has 2 graphic cards, an integrated INTEL gc and a dedicated NVIDIA gc? I have no use for the NVIDIA gc, because I don't play anymore (...
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1answer
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How to deal with tearing in Gentoo on NVIDIA?

See Why is video tearing such a problem in Linux? for the reasons behind why tearing is a problem in the first place, and why the usual "tricks" usually suggested (like "disable compositing", ...
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Fedora: Re-enabling a disabled monitor

I am new to Fedora and caused an issue I need resolved. I went into display settings and disabled one of my monitors (#3) and it shut off like I expected. Now I want to re-enable it, but I cannot seem ...
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1answer
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Output video to overscanning TV with Intel graphics

I have a television which is 1366x768 resolution. It is a JVC LT-32EM49. When devices are connected to it, it lists the normal resolutions such as 480p, 720p, 1080p/i. But it does not list 1366x768. ...
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1answer
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How to make linux userland applications think that laptop lid is always open?

THE GOAL: I'm trying to make my linux laptop (a T400 ThinkPad with Libreboot) behave exactly the same way whether the lid is open or closed. To put it another way, I'm trying to simulate a laptop ...
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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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1answer
34 views

Unable to install openchrome driver

After install needed dependencies I have follow in terminal: svn checkout http://svn.openchrome.org/svn/trunk openchrom svn: E170013: Unable to connect to a repository at URL 'http://svn....
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Warning:raw1394 kernel module not loaded or failure to read/write/dev/raw134e94!

I’ve been using Ubuntu since 2015. I’m a videographer. I have an Asus ZenBook 15 Pro which has Ubuntu 18.04.3 LTS installed on it. I want to edit on this machine. My problem is as follows: My ...
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1answer
1k views

azap from LinuxTV dvb-apps strange signal behavior with Hauppauge WinTV-HVR 950Q

What I want to do I have a Hauppauge WinTV-HVR 950Q USB-TV-Stick. I want to use this stick to successively tune to and read in a certain live TV stream. What I do I trigger a scan and save the scan ...
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Is it possible to view media on the console?

I know the console (outside X11, e.g. /dev/tty1) works in text-mode, but I think if it is possible to play music using programs like cvlc and mplayer, it should be possible to view pictures and watch ...
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Playing video is slow via XPRA

When using XPRA within a home-sized LAN, I find that the speed is a bit slow. Playing a video is like slowly playing a sequence of slides. How can I make XPRA faster or shall I use some other software?...
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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 to convert a VOB file to avi?

I am trying to convert a VOB file copied from a DVD into an avi in Ubuntu 13.10. I tried dvdrip, which failed due to a frame count error or something. I tried acidrip as well, but it always choose an ...
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1answer
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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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Problem with playing video from shared folder in LinuxMint 19.2

My system is LinuxMint cinnamon 19.2 on laptop Lenovo G30-50, shared folder is on WD MyBookLive device connected to the router via wire LAN. My laptop connected to the network via WiFi. I can download ...
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1answer
2k views

Not detecting NVIDIA video card

I am almost certain my Debian 8 computer is just detecting one video card. The computer has two video cards, specifically an Intel HD Graphics 520 (integrated) and NVIDIA GeForce 940-mx (2GB). I ...
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1answer
355 views

Open a program (VLC) and move it to the foreground

On a Mac, specifically, when I use the VLC command line to open a video file, it opens in the background by default. How can I instead move it to the foreground whenever I run the command to open a ...
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1answer
1k views

Allow multiple programs to access the same V4L2 device

I'd like to be able to capture input from a webcam to to separate programs. One for VoIP, and one for capture. The problem is - Linux will allow only one process to access a V4L2 device, so once I ...
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4answers
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How to extract images from video file?

I mean, how to generate images files from a video like screenshots.
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Play .MP4 video and its frame index

I am using Videos to play .MP4 video files in Linux. Sometimes I also use VLC media player to play these files. They are great in Linux. However, either of them has one feature I desperately want to ...
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2answers
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How to bind v4l2 USB cameras to the same device names even after reboot?

I have 3 USB cameras on single PC, one camera will be unused and can be ignored. I need to force two identical cameras to be mapped to constant device names (like /dev/video1 and /dev/video2 ). The ...
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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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1answer
2k views

Reset audio/video drivers and configurations to a fresh state

I recently moved my previous install of Linux Mint 18.1 from a Dell Inspiron to a newly bought Dell XPS 9360, connected to a Lenovo Thunderbolt 3 Dock, which hooks it to all my peripherals and an ...
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9answers
315k views

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, but I need it to run on a mobile device that doesn't have much available space)? I ...