Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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 ...)

0
votes
1answer
21 views

Power off video card until reboot from command line?

I have "headless" machine with video card, I use very rarely, only if I want physical access to it. The cooler of this video card became old and started to produce bad noise. Can I disable this video ...
0
votes
0answers
27 views

ffmpeg black screen recording

When I record my desktop or recording video with ffmpeg it generates a black video. My operating system is Ubuntu 18:04 bionic kernel 4.16 Here is the command I'm using : ffmpeg -f x11grab -s ...
0
votes
1answer
30 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 ...
0
votes
0answers
9 views

GStreamer: APNG, GIF or animated WebP

I want to generate an animated preview of a video using gstreamer for preview on a webpage. I'm able to get a static PNG with the pipeline filesrc location=... ! decodebin ! videoconvert ! pngenc ...
1
vote
0answers
30 views

How to modify blended video durations with a -filter_complex command argument in ffmpeg

Building off the solution provided in this thread, I'd like to know how to make simple modifications to a complex command argument which uses ffmpeg to interweave two videos by dissolving them into ...
1
vote
0answers
92 views

Evaluate the similarity between two video files

I'm looking for a method that reliably gives me a "mathematical distance" of two videos from one another. Similar to how the Levenshtein distance can be used to get the distance from a string to ...
0
votes
1answer
46 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 ...
1
vote
1answer
43 views

How to extract the “stored frames” without rely on fps?

I noticed if I extract frames with this command: ffmpeg -i sample_nosound.mp4 $filename%03d.jpg It will extract depends on fps by default. ffmpeg -i sample_nosound.mp4 shows this video has 6 fps, so ...
3
votes
1answer
117 views

How to find and delete duplicate video (.mp4) files? [closed]

I have 16,000+ short video clips and there are lots of them that are exactly alike to the human eye, but if you examine very closely you will find that one or the other may have an extra 1 second (or ...
3
votes
2answers
71 views

How to transition smoothly and repeatedly between two videos using command line tools?

I want to output a video using two videos as input, where these two videos fade (or dissolve) into each other in a smooth and repetitive manner, every second or so. I'm assuming a combination of ...
1
vote
0answers
13 views

Suitable parameters for hours of screen capture

I need suitable parameters for very, very long screen captures using ffmpeg. Quality: Only occasionally needed. If text is readable, that's enough usually. I can use -qscale:v *[0-32]*, of which ...
0
votes
0answers
18 views

Create a video from pictures and audio for each picture

I have many slides (pictures) and spoken audio for each slide. Can I turn this into a video? How long each slide is shown is determined by the length of its audio. Can I somehow script this and ...
0
votes
0answers
17 views

Gstreamer - problem with mkv playback and jack

I use gst123 as my regular audio and video player. I'm now using a Saffire 6 USB interface, which works out of the box using jack so I select jack as audio-output device with the -a option like this: ...
0
votes
1answer
54 views

List files that are not H264 encoded

I want to convert any files in a large media collection that are not encoded with H264. In order to do that I need a tool to list all the files, I need to convert. There are a lot of files to go ...
0
votes
1answer
1k views

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: ...
0
votes
0answers
17 views

CLI Tool to extract images from video slideshow

I'm looking for a tool that can take a video (mp4) that is composed of about 50 still images and extract all of the images out of that video. Is there anything like this that exists?
1
vote
0answers
30 views

Split DVD iso of TV series into episodes

I have a lot of DVD isos (I also have the physical DVD's, but I have ripped them, so they shouldn't be needed for this), of various TV series. Each DVD contains several episodes of the series, but ...
2
votes
1answer
37 views

Find what program accessed a kernel module

How do I access a list of users/programs that accessed a certain module? I run: lsmod | grep ^uvcvideo This returns this line when no application is using my video camera: uvcvideo ...
0
votes
1answer
89 views

Connection refused to local ffserver

I am unable to send my desktop capture to a localhost ffserver: the connection to the local server is refused. # ffserver >/dev/null 2>&1 & # ffmpeg -video_size 1600x900 -framerate 20 -...
0
votes
1answer
42 views

Cannot send desktop capture to ffserver?

I am simply trying to send a ffmpeg stream consisting of a desktop capture to a local ffserver: # ffserver >/dev/null 2>&1 & # ffmpeg -video_size 1600x900 -framerate 25 -f x11grab -i :...
2
votes
0answers
37 views

Issues with Nvidia drivers [closed]

Something happened to my laptop during an update it seems and I have been experiencing MANY issues with apt-get and dpkg trying to update packages due to unmet dependencies. Everything I have found ...
1
vote
1answer
81 views

Udev rules for seemingly indistinguishable devices

I'm trying to use udev to automatically set up symlinks to an Intel RealSense D415. This is because I use several cameras on the machine and need to be able to reliably refer to them via a filename (...
1
vote
2answers
345 views

Is there any video player which can seek with thumbnail like in YouTube?

When you watch a video in YouTube, you can seek it with the thumbnail preview. Many Windows' and MacOS' video players have this feature, but what about Linux's? I've already read this same question, ...
1
vote
1answer
37 views

How do you take a video of a program running on a headless machine

I would like to take a video of what would run on the X Server on a remote machine and store that on my local machine. I thought of forwarding the X Session and using a screen capture tool, but ...
0
votes
0answers
61 views

How to drop bad frames in video file?

I've got a video footage from a security cam in MP4 format that from time to time contains broken frames. When I export the video to JPG frames the broken frames can be easily identified: Is there ...
1
vote
1answer
382 views

How to speed up video to make timelapse?

I've got a video file with 1.0 FPS (i.e. one frame per second) and would like to re-encode it so that it plays ca 20x faster. A short 1 FPS sample is here: http://s3.aws.nz/cam-1537668742.mp4 I can ...
0
votes
0answers
26 views

Partially replace video stream while preserving audio stream

Consider a video file with one video and one audio stream. I want to replace the video stream partially while preserving the original audio stream. With partially I mean to replace certain seconds ...
2
votes
0answers
122 views

trim video files via audio track information

Is there a way to pass a folder of .mp4 files and trim them by audio track? Say the first 20 seconds has no loud audio and the last 20 seconds has no loud audio, is there a way to remove the first and ...
1
vote
0answers
628 views

Codecs support disabled in Firefox

In Firefox 61, under Tumbleweed I cant play videos from youtube, when checking for the html5, it says: So I have been playing with the about:config and about:buildconfig but the mp4, h264, etc ...
1
vote
1answer
209 views

A fast question about GVT-g Intel?

I read this howto and have the following questions: Is this like the GPU passthrough VFIO (you need two monitors and two different graphic cards, and a motherboard which supports IOMMU feature)? Or ...
0
votes
2answers
512 views

FFMPEG: change input without stoping proccess

how i can change input on ffmpeg without stop process on linux Debian 9? im user decklink input and i need to change to file mp4 input. ffmpeg -f decklink -i 'DeckLink Mini Recorder' -vf setpts=PTS-...
0
votes
0answers
94 views

LightDM and nouveau issue

I have a PC desktop with Debian Stretch. Using kernel 4.9 it's working okay. But I want to use a newer kernel. I tried 4.15 4.16 and 4.17 and when I just PC and log in LightDM, i get to desktop for 1 ...
0
votes
0answers
217 views

gst-launch full screen

I've been using gstreamer on yocto project for playing video on HDMI, but I can't find anyway to play the video in full screen. Command I'm using is gst-launch playbin uri=file:///file/path How ...
0
votes
1answer
422 views

Arch screen freezing / pausing

My arch laptop has been freezing during video playback recently - not completely, but the video playback will freeze though audio will still play, and will unfreeze after input (moving the mouse or ...
0
votes
0answers
212 views

How to stream video on HDMI device using ffmpeg

I'm want to take mpegts from udp and out to hdmi using ffmpeg. Command I'm using is ffmpeg -hwaccel vaapi -i udp://<UDP_ADDR> -f alsa hdmi:0 This streams only audio on HDMI and not video. How ...
0
votes
1answer
78 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 ...
0
votes
0answers
110 views

Set video to LVDS-1:d value in grub2 before booting

I need to set video to LVDS-1:d value in grub2 before booting. I may get to grub file by pressing e or to command line by c. I did many tries but not succeed. Don't now which place in the file, use ...
1
vote
1answer
3k views

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 ...
1
vote
1answer
199 views

How to force 60 Hz in 1366x768 despite kernel bug after kernel 4.13?

If your screen resolution is 1366x768 and your Intel card is able to go down to 40 Hz screen refresh rate for power saving (and most modern laptops can, no matter how cheap) instead of the usual 60 Hz,...
0
votes
2answers
36 views

Linux showing incorrect file modified time for camera video

I recorded a video with my camera and when I open the directory containing the video files, the modified time is always wrong. Here is a screenshot from the video clearly showing the correct time ...
1
vote
0answers
146 views

Debian Intel graphic drivers for nuc6i7kyk

I have installed Debian Stretch on a nuc6i7kyk, but I cannot get the video drivers to work (I keep getting UNCLAIMED drivers). Here as much info I can share on my install: $ glxinfo | grep -i ...
1
vote
1answer
2k views

Chromium not playing live youtube videos and other online streams

This is posted in order to provide an answer. Details about the initial problem are here. It involved not being able to play Youtube live streams, Tweeter live streams, Vimeo non-live streams and ...
0
votes
0answers
14 views

Screen glitching to desktop wallpaper when recording or screen sharing

I have a problem whenever I'm desktop streaming, or recording, on any software. OBS, discord (screen sharing ) ...etc the glitch is showing my desktop wallpaper for some reason or just a black color .....
2
votes
3answers
3k views

Cannot play live Youtube on other streams in Opera - no h264 support

I have good reasons to use Opera as my default browser (I find it lighter than Firefox Quantum and Chrome/Chromium, I like its speed-dial bookmarks, as well as other features and details). Opera ...
2
votes
0answers
325 views

Use guvcview to setup Logitech C920 webcam and keep configuration

I have a Logitech C920 webcam connected to my computer running Debian Linux. I want to access the stream by using mplayer (/dev/video0) and it works out of the box. However, the saturation/brightness/...
1
vote
0answers
281 views

play 4 rtsp streams in fullscreen

I have 4 IP cameras in my network, and I need to play the 4 streams at once in a grid view, currently i execute this command: ffplay rtsp://10.1.10.123 for each IP and then I rearrange the windows,...
1
vote
2answers
306 views

Turn off, not stand-by, console tty1 video

I want the opposite of what seemingly everybody else wants: on my plain old character mode tty1 console directly served by the video card of my bare metal Debian 8.10 Jessie box, I want the screen ...
0
votes
1answer
454 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
0answers
97 views

How do I set up a video loopback for recording my screen in X11 debian?

I am using LXDE on Debian Stretch and wish to record my screen using VLC media player. How do I set up the screen:// MRL capture device? Below is my attempt when assuming that I already had the ...
1
vote
0answers
110 views

Cannot turn on external display with xrandr

I'm running Linux on my Macbook Pro with i3 and I have been able to get everything working execpt my external monitor from the HDMI port. xrandr sees the monitor but the monitor still says "no signal" ...