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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187
votes
8answers
266k 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 ...
1
vote
0answers
8 views

How to record the lock screen and other users sessions?

After I log in to my Linux session I start recording my screen with the command recordmydesktop --fps 2 --no-sound --on-the-fly-encoding --compress-cache --no-frame --v_quality 10 But when I to go ...
1
vote
0answers
35 views
+50

Script for ffmpeg webcam audio video recording

I've bought the very popular Logitech C920 for creating YouTube videos with ffmpeg. My desire is to build a script for easy recording without bothering with the powerful but rather cryptic ffmpeg ...
2
votes
1answer
971 views

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. ...
0
votes
0answers
9 views

How to add still images to audios to make a video by FFMPEG?

I have several audio files, and need to add different still images to them. Currently, I make a video of each audio file with the corresponding still image as ffmpeg -loop 1 -framerate 1 -i photo1....
0
votes
0answers
12 views

Which format my webcam produces

How can i find out which format (preffix) my USB webcam produces ? I want recording webcam to HDD with ffmpeg and i need save the capture record without reencoding because of CPU usage (i using ...
1
vote
1answer
24 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 ...
3
votes
4answers
1k views

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 "$i" -loop 0 "0output$...
73
votes
5answers
75k views

How to do I convert an animated gif to an mp4 or mv4 on the command line?

What command would I use to convert an mp4 or mv4 video file to an animated gif, and vice versa. That is, convert a animated gif to a mp4 or mv4.
0
votes
1answer
15 views

Random lines during screen recording playback

Every time I record or screencast my desktop, once I play it back I get random lines appearing now and then, no matter what media player I use. They're either black or they show fragments of my ...
2
votes
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 ...
3
votes
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 ...
3
votes
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 ...
0
votes
1answer
26 views

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 ...
0
votes
0answers
24 views

What deteriorating component in my laptop is causing poor performance while playing videos

I have a laptop which I have been using for years. I was always able to watch Youtube videos and hours-long HD videos stored on my hard drive just fine. However, recently the device started poorly ...
27
votes
9answers
19k views

Get total duration of video files in a directory

I have a list of .ts files: out1.ts ... out749.ts out8159.ts out8818.ts How can I get the total duration (running time) of all these files?
0
votes
1answer
24 views

youtube-dl : how to skip downloads lower than 480p resolution?

When using the popular program youtube-dl, how can I skip download of certain videos, particularly ones that have a lower quality than 480p resolution?
2
votes
0answers
615 views

Linux Mint - Glitch in Screen Recording video files

I am new to Linux, and most things seem to work fine; but it is not the case of Screen Recording. I have tried with the following programs: OBS Studio Voko Screen Kazam And I have tried with the ...
0
votes
0answers
9 views

Batch set MP4 create date metadata from filename

On a Linux system, I have a bunch of MP4 files named like 20190228_155905.mp4 but with no metadata. I've previously had a similar problem with some jpg's which I solved manually with exiv2 -M"set ...
1
vote
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 ...
6
votes
1answer
1k 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....
0
votes
0answers
61 views

Linux Mint 19 install and update problems

I'm using Linux Mint, how can I check which Graphics drivers are being used ? I want to enable the Intel Hd graphics drivers, whcih I think are already installed (how would I check?). How do I ...
2
votes
2answers
48 views

How do I use mpg123 to extract the audio from a .mov video to a .wav file?

I have some video files in .MOV format and I want to extract the audio from them to .WAV files. I cannot use MP3 files as I'm trying to feed the sound into a sonographic analysis program (WASP) that ...
1
vote
1answer
70 views

Chromium won't play any Youtube videos, Firefox plays them

I'm using Devuan Beowulf (~= Debian Buster), freshly installed. I can play Youtube.com videos fine using Firefox, but if I try them in Chromium, it keeps shown the loading animation (the circle with ...
10
votes
3answers
21k views

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 ...
37
votes
4answers
49k views

Merge two video clips into one, placing them next to each other

I have two video clips. Both are 640x480 and last 10 minutes. One contains background audio, the other one a singing actor. I would like to create a single 10 minute video clip measuring 1280x480 (in ...
0
votes
0answers
9 views

Play two webcam feeds on top of each other in fullscreen mode

I'm looking for a linux app which I can configure to play on launch the feed of two connected webcams. The feed of webcam 1 should be fullscreen, while the second one should play in a specified ...
2
votes
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 ...
2
votes
1answer
53 views

How do I reduze the size of a video to a target size?

I want to reduce the size of a video to be able to send it via email and such. I looked at this question where I got good advice on how to reduce it. Problem is that I need to manually calculate the ...
1
vote
1answer
387 views

H.264 videos fail in Firefox or Chromium on Fedora 30

https://www.youtube.com/html5 reports my browsers (Firefox 66.0.5-1.fc30 and Chromium 73.0.3683.86-2.fc30) on my Gigabyte GA-970A-UD3 with a Radeon RX-580 GPU don't support H.264. I've tried ...
1
vote
2answers
1k 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 ...
12
votes
9answers
39k views

Fast tool to generate thumbnail video galleries for command line

I use gframecatcher to generate thumbnail video galleries, i.e. something like this: However this is a GUI tool and I want to create recursively a gallery for every video in a directory structure, so ...
0
votes
0answers
31 views

Best way to sync OMXPlayer audio and video?

I am having issues getting OMXPlayer video played on a TV via HDMI to sync with audio streamed over the network. My thought was delay the video output by ~500 ms then use pavucontrol to fine tune the ...
1
vote
0answers
278 views

Multiple /dev/video for one physical device

First some specs: my computer is an HP EliteBook 8460p. It comes with an integrated Chicony HP HD webcam. My issue is that a lot of applications (well, at least Skype and guvcview) are displaying ...
2
votes
0answers
23 views

External network display for playing media

On my Windows 10 computer I was able to right click a media file (video) and choose "Play To ..." and then select my Sony Tv which was plugged into the network. The video would then play with the ...
3
votes
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 ...
1
vote
1answer
120 views

Screen Tearing on Linux Mint Mate with Intel Graphics

I'm experiencing screen tearing with Lint Mint Mate 19.1. Running lspci | grep VGA prints 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated ...
6
votes
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 ...
1
vote
0answers
92 views

Why is VLC Media Player playing videos like this?

Please see the short GIF recorded screencast of the problem in action. This is how all videos open and play, I cannot see a darn thing, just these big colored bars where the color is taken from the ...
0
votes
1answer
975 views

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 ...
1
vote
2answers
61 views

How to list all files less than 1080p

There are a number of Youtube channels that I archive using a daily cron script that runs youtube-dl. However, in checking over the videos to make sure my script is working, I noticed for one of the ...
3
votes
1answer
5k views

Arch: libGL: screen 0 does not appear to be DRI3 capable

I've a problem with certain 32 bit game on 64 bit Arch Linux. It looks like the problem lies in my 32 bit enviroment which cannot see my 64 bit NVidia drivers. When I launch 64bit version of ...
41
votes
3answers
79k views

Re-encoding video library in x265 (HEVC) with no quality loss

I am trying to convert my video library to HEVC format to gain space. I ran the following command on all of the video files in my library: #!/bin/bash for i in *.mp4; do #Output new files by ...
1
vote
1answer
3k 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 ...
0
votes
2answers
603 views

Udev Rule to discern 2 identical webcams on Linux

I have 2 identical webcams plugged into my Raspberry Pi. I want discern which camera is which based on the USB port they are plugged in to. This is the purpose of udev, so I wrote the following rule:...
1
vote
1answer
3k 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 ...
3
votes
1answer
948 views

What would cause my video driver to stop working after every update?

I am not sure if this is a systemd issue (like order of loading modules) or a video driver issue. It does seem like every time I update boot-related stuff from a chrooted environment using my Arch ...
3
votes
0answers
67 views

restrict access to the webcam to certain user/software on Ubuntu 16

I would like to restrict the access to the webcam only to certain programs/users. I use Ubuntu 16.04. If I am right my webcam is linked with /dev/video0 (just as an example), which is owned by root ...
2
votes
1answer
295 views

S-Video has no color output for cx231xx

I've got an Elgato Video Capture V2 capture card I'd like to use for capturing S-Video. Sadly, when I use tvime to capture, the output is shown in black and white. I tested this using cheese as well, ...
0
votes
1answer
3k views

“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 -...