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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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FFMpeg Join mp4 Files Without Re-encoding but Keep Original Frame Rate

I tried adding the -vsync vfr as a post suggested on https://superuser.com/a/1514949/1348487 but the original frame rate is not kept. find *.mp4 | sed 's:\ :\\ :g'| sed 's/^/file /' > list.txt; ...
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Change default xorg.conf video driver

Debian 11 here with LXDE (Xorg + lightdm) How could I change the driver used by X? My X is using the default options, I have no /etc/X11/xorg.conf file, so I generate one with the command sudo X -...
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Why the rtsp stream can be opened in smplayer gui instead of cli?

The rtsp url for my home ip camera is such format rtsp://admin:xxxx@192.168.1.80:554/cam/realmonitor?channel=1&subtype=0.I can open it with SMPlayer's gui window. Why can't it be open with ...
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How can I join mp4 files in Linux without transcoding the files?

is there a GUI or command-line utility for Linux that would allow me to join several mp4 files into one file? I need to join them in such a way that the original files won't be affected in any way. I ...
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Move and rename video files (*.mp4) shorter than 3 min

I am trying to create a bash script that moves/renames (and / or creates a symbolic link) to all video files that are shorter than 3 min. So far I have this Find command: find "$findpath" -...
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Enable hw acceleration for Intel HD 500

With Ubuntu 20.04 and Qt 6.2.0 I was able to play mp4 videos with hardware acceleration using QtMultimedia: MediaPlayer { id: mediaBackground videoOutput: videoOutput ...
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Unable to play videos in browsers on Fedora 35

I upgraded from Fedora 32 to Fedora 35 in last December. Lately I have found out that I am unable to play any videos on web browsers. The video loads but never starts. It's stuck at 00:00. If I move ...
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Split video file into chunks using FFMPEG and exact number of frames

I am trying to split a video video.avi (with N being the total number of frames) into contiguous chunks according to a fixed number of frames (say M = 100). Specifically this process should yield: ...
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Are there any command-line tools to merge two srt files?

I have two srt files, cd1.srt and cd2.srt. Unfortunately, srtool is no longer available anywhere which was the answer to the same question when it was asked a few years ago. How do I merge two *.srt ...
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How can I download a video from an M3U8 file?

I have an M3U8 file saved locally. How can I download the video from this file?
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Video player with bookmarks

Does there exist a video player for Linux that has bookmarks? That is, I would like to watch a video, close the player and then go back watching from the same moment when I reopen the file, or from ...
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Can ffmpeg concatenate multiple formats in different aspect ratios into one consistent format?

I am building a wrapper for ffpmeg but the concatenate part has me a bit stuck. I am not entirely familiar with ffmpeg or which options and arguments I should be using. How can I concatenate a photo, ...
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1 answer
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Extracting video via ffmpeg gives incorrect duration

This is the ffmpeg version I am working with on Debian testing - $ ffmpeg -version ffmpeg version 4.4.1-2+b1 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 11 (Debian 11.2.0-12) ...
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Speed up video by ffmpeg did not reduce file size

I'm following Speeding up playback speed https://trac.ffmpeg.org/wiki/How%20to%20speed%20up%20/%20slow%20down%20a%20video However, when I speed up my playback speed by 1.5, I'd anticipate a reduce of ...
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Video glitches when files are played in fullscreen (screen tearing in VLC & MPV in Debian11/KDE)

When playing videos like movies with the Kodi media center, the videos often have lots of glitches. I tried it with the VLC player, MPV and DragonPlayer on Debian11/KDE and it occurs with all of these ...
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Stream from motion app not showing video

I have the 'motion' app running under Fedora 35. No errors/warnings, and when I browse to the default video page:port I do see a running video. However, I was expecting to see the image stream from ...
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2 answers
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can't control font size on grub screen

I can't control the font size on the grub screen. For example, if I do: grub set gfxmode=1024x768x32 I get no change in the font size, and it remains tiny. Why is this? There is much on the internet ...
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How do I write directly to video memory without xorg?

Kind of an odd question I know, but fifteen years ago I was able to use svgalib on some ancient version of Debian to draw directly to video memory without xorg. To my dismay I see svgalib was pulled ...
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Search for all videos created on a Saturday

I am using Linux Mint. There are several years worth of files and folders scattered everywhere. My goal is to find a way to search my entire hard drive for any video files that were created on a ...
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Cheese (Camera) is not working in Ubuntu 20.04 on my Corei7 11th Gen(Lenovo Thinkbook)

My camera was working properly yesterday, but all of sudden it stopped working next day. I can only see the black screen as below: My system details are: I've tried all the other solutions like ...
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Merge (not concatenate) a video file with audio file

I have a video file and an audio file. Video file: video.mp4 It has video It has audio Audio file: background.mp3 It only has audio. My OS: Ubuntu 16.04. I also have vlc After searching a lot on ...
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ffmpeg "Error initializing bitstream filter: h264_mp4toannexb"

I'm trying to combine two mp4 files using ffmpeg. As per the (rather abstruse) documentation, the following code should combine the files: ffmpeg -i input1.mp4 -c copy -bsf:v h264_mp4toannexb -f ...
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2 votes
1 answer
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Enabling hardware video acceleration in Chrome, Kubuntu 20.04

Problem in a nutshell: cannot enable hardware video acceleration in Chrome. My desktop has integrated GPU Intel UHD 750 and Core i5 11600 and it runs Kubuntu 20.04. Initially, I had no hardware ...
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Video artifacts on xmonad

I suddenly started getting this type of artifacts while using xmonad. The pattern changes and often disappears after some mouse movements. I didn't do any video-related updates, nor xmonad updates. ...
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Video is delayed when recording

I need to record my screen. I have tried different recording softwares, but I always have the same issue: the recording of the video is delayed with respect to the audio (so I hear the audio before ...
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Displaying video on a monitor without a graphic interface

I am working on a microcomputer with Yocto operating system (based on openembedded) where I don't have any graphical environment. The system is quite heavily loaded, and I would like to avoid adding a ...
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FFMPEG Multiple Filters (Scale Video + Scale / Apply Watermark)

Can someone please tell me the proper syntax for combining the following filters into a single command? I can't seem to figure it out. The following command is being used to scale the video. ffmpeg -i ...
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1 vote
1 answer
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Recursive (batch) video codec details with MediaInfo CLI

I want to share my script to do this with Media Info CLI and python. At first I tried with pure bash but should have just gone python at first, much quicker and adaptable (for me). My task was to ...
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X11 video memory requirements with multiple desktops and windows open

I am running i3 window manager on a single 4k display. However, I have 12 desktops and maybe 50 windows open. Recently I noticed that zoom video is very laggy at times, also it takes a second to ...
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Strange video issues - works with kernel 5.14.9 but fails with 5.16.rc3?

I have a project G4L that works with syslinux, grub4dos and grub2 setups. Boot and running works fine with the 5.14.9 kernel in all of them, but testing the 5.15.rc3 the video on some modes gives a ...
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Fedora 34 lags when I play any video or audio

I dual booted windows and fedora 34. My windows works just fine when I play any video or audio but in fedora there is a lot of lag. Fedora works just fine when I don't play any video or audio. When I ...
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2 votes
1 answer
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Is there a fuzzy duplicate finder for videos, that does not require a GUI?

I am currently trying to eliminate duplicated videos with minimal changes. Those might be a slightly different encoding, a lower resolution or just changed meta data. These videos are in a complex ...
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Cannot Play m2ts Files with VLC

I am trying to play and edit some m2ts files. MPV plays them fine, but VLC only play audio. Same thing with Davinci Resolve. M2TS is audio only. I think I am probably missing some dependencies or ...
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Opera in arch can't play some videos

Problem: Opera in arch Linux can't play some youtube videos. pacman -Q opera opera 78.0.4093.184-1 uname -a Linux arch 5.13.13-arch1-1 #1 SMP PREEMPT Thu, 26 Aug 2021 19:14:36 +0000 x86_64 GNU/Linux
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2 votes
1 answer
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Screen flickering on Inspiron 16 Plus 7610 after installing 20.04 LTS and deepin 20.2.3

After sometime flickering it prints the message: CPU pipe B FIFO underun I've tried to disable C-states as suggested in [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO ...
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Is it possible to make a device accessible exclusively by certain programs?

I have a device (a video card) that I need only two programs (expressed as paths, e.g. /usr/bin/myprogram) to access. The device has a /dev file (e.g. /dev/mydev1), but I can also use other references ...
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What are the software tools to view the video on Android from the Linux server?

I have a Debian 10 remote server on the local network. On this server there is a directory ~/MyVideos. This directory containing video files that I want to play (to watch) on Android tablet. The files ...
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Audio and Video Play pauses Rapidly

While playing a video in any browser or in any of my laptop player, the video play-pauses automatically and very rapidly. This problem used to exist earlier when I used Windows. Thinking it's a OS ...
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Dell Vostro 320 Camera not working in Zorin 16

I have a Dell vostro 320 and installed Zorin 16 on it. all running well except the camera. here is how the terminal commands looks. :~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root ...
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Opera is unable to play videos in MX Linux KDE version

I recently installed and started to use the Opera browser as it offers a wide range of functionality and the workspace feature: it seems very viable for me. But when it comes to playing videos, this ...
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Webcam switching error in Zoom

I have a Lenovo laptop with an internal webcam running Arch Linux. I also use an external USB webcam which is supported by the Linux kernel. When I launch Zoom, it first uses my internal webcam as the ...
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Enablig USB3.0 HDMI Video Capture /UltraHD on CentOS

I purchased this device on amazon. Its description: Game Capture Card, 4K HDMI to USB 3.0 HD Video Audio Capture Device 1080P 60FPS Game Box Grabber, HDMI Video Conference Camera, Live Streaming for ...
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How to capture video and audio from /dev/videoX?

I have connected a Pinnacle Dazzle to my Fedora workstation and the system has correctly identified it and created /dev/video2 and an audio device (that I see in my audio settings). I want to use this ...
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Debian 10.10 non-free iso Live Pen Drive can't go live in a Lenovo Ideapad s145 81S9000RBR

I'm struggling with running a Live USB Pen Drive with Debian 10.10 non-free iso in my Lenovo Ideapad S145. But trying with or without UEFI support can't start the system. It stays halted on a black ...
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1 answer
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How to play a playlist continously?

I have a video file which is 20 seconds long. I cut this video file into segments like video_file_0 -> starts at 0:00, ends at 0:02 video_file_1 -> starts at 0:02, ends at 0:04 video_file_2 ->...
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1 vote
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Mirrorless camera as webcam - Sony A5100 & ElGato Camlink 4K

I am trying to get my Sony A5100 working as a webcam on Linux, specifically Fedora 32 on the 5.11.22-100.fc32.x86_64 kernel. Likely time to upgrade, but I figured I'd query here a bit first to see if ...
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Why can't receive rtp stream on Ubuntu?

I am streaming the desktop over rtp using ffmpeg from computer A. Here is my ffmpeg code: ffmpeg -f x11grab -framerate 25 -video_size 1920x1080 -i :1.0 -c:v libx264 -preset fast -pix_fmt bgr0 -b:v 3M -...
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567 views

Best way of playing a m3u8 stream?

How can one play a m3u8 stream smoothly and reliably? Here is what I've tried: vlc "$link" startup is long playback is jittery sometimes it doesn't play a valid link ffplay "$link&...
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Can't play any videos in browsers on Fedora 34

I've installed Fedora 34 in VMware Workstation 16. Everything works smooth besides Wayland not outputting the right resolution. But today I have discovered that I can't play any videos inside Firefox. ...
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How to play .dvs (DTI's DVSSDiscPlayer format) on Linux systems?

.dvs is the exotic extension of a file / a database of files / a database of streams (cross out wrong). This type of file is used in the CCTV to let the operator watch the recording from, let's say, ...
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