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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3
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2answers
181 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 ...
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0answers
15 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 ...
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0answers
22 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 ...
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0answers
39 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
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1answer
86 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 ...
7
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1answer
8k 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
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1answer
2k views

Overscan problem while using TV as a montior

I am using Lubuntu 17.04 wiht i3 window manager and trying to connect it to an old flat-screen TV that has an HDMI port. The TV remote is long gone and the only control buttons on the TV are volume ...
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0answers
36 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?
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2answers
1k views

Rotate webcam as well as screen (portrait mode)

TL;DR: Is it possible to rotate by 90 degrees the feed of a built-in screen webcam? I have 2 screen monitors, one in landscape and one in portrait mode. The webcam is on the "portrait" monitor, the "...
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0answers
57 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 ...
4
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0answers
90 views

How to loop over display numbers in .xprofile?

Is there a simple command to get all the display numbers (and only the display numbers) connected to the computer? The use case is that I'd like to have separate colour profiles ~/.color/icc/${display}...
40
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4answers
14k views

Convert OGV video to GIF animation?

I created OGV videos with the gtk-recordmydesktop screencasting program, trying to tackle this problem here with bruteforce over X. I can view the videos with VLC. Now, the task is to find some ways ...
26
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5answers
25k views

Can I pipe /dev/video over ssh

I have two computers, a desktop in my office ( with a webcam attached ) and a laptop somewhere else on the network. Usually I take a look at my office through my webcam by running ssh Office -Y "...
3
votes
1answer
44 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
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1answer
93 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 :...
0
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1answer
354 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 -...
3
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2answers
13k views

How can I list the available video modes for my screen?

On Windows computers, there is a simple "hide the modes this screen does not support" button. How can I get the available video modes supported (accepted) by my actually connected screen via Linux ...
2
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2answers
3k views

How do you install Intel proprietary drivers on Mint?

UPDATED: I have Linux Mint 18.1 running on an HP laptop. VGA compatible controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display... I can install the drivers from ...
2
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0answers
41 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 ...
0
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1answer
1k views

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 ...
28
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3answers
150k views

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 ...
3
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2answers
1k 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
40 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 ...
2
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1answer
1k 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 ...
4
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1answer
410 views

rsync and watch partially transferred video file

I tried to copy a large video from my server to my local device with rsync -aP remotefile.mov localfile.mov But the local file does not show up unless I stop the rsync process. I can then watch the ...
5
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1answer
936 views

Setting the video output for the framebuffer device

I'm working with Broadcom's 97356 device, which contains an HDMI and an analog video output device. I'd like to be able to draw stuff to one of those two devices (or both at the same time!) using a ...
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0answers
41 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 ...
1
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0answers
205 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 ...
0
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1answer
539 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 ...
1
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0answers
823 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 ...
2
votes
1answer
3k views

Split a video to multiple chunks according to multiple starting and ending frame indices

Are there any tools (like FFmpeg or OpenCV) can split a video into multiple chunks according to some specific starting and ending frame indices? For example, given (0,20),(21,33),(40,60)..., each ...
1
vote
1answer
345 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 ...
107
votes
4answers
37k views

Watch YouTube videos in terminal

I'm looking for a way to watch YouTube videos in terminal (not in a browser or another window, but right there, in any bash session). Is there a simple way to do this? I imagine something like this: ...
5
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2answers
4k views

Is there any equivalent to the atempo ffmpeg audio filter but for avconv to speed up video & audio?

As noted here, we could speedup audio with ffmpeg using: $ ffmpeg -i input.mkv -filter:a "atempo=2.0" -vn output.mkv But on Ubuntu, ffmpeg is replaced by avconv, and the atempo filter is not ...
1
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2answers
1k 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-...
2
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1answer
124 views

Creating a timelapse with guvcview

Is there a way to create a timelapse video (or similar) with guvcview? I'm using an external (USB) camera and ordinary footage seems to very quickly fill a hard drive. Can I get it to record an ...
4
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2answers
3k views

How to map /sys/bus/usb/devices to /dev/video*?

I am using a library (librealsense) that only outputs the bus and port number as such (9.1). It uses libusb internally. The issue is from this identifier in libusb I want to know what physical device ...
2
votes
0answers
846 views

HiDPI screen and scaling

I recently got a new work laptop which has a native resolution of 3200x1800. It works great. I've been able to get things to be mostly the right size with KDE's display scaling... but it's not quite "...
4
votes
3answers
1k views

Which Desktop environments do not require 3D acceleration?

I have two situations in which I need to run desktops without any 3D acceleration. 1) I often run Ubuntu and CentOS VMs on a machine who graphic card does not play nicely with VirtualBox's 3D ...
1
vote
1answer
2k views

Arch Linux VGA video problem

I have an old HP DL380 G4 server that I'm trying to load Arch Linux onto, but I've run into a bit of a snag. I went all the way through this guide, and everything seemed to go smoothly, but when I ...
1
vote
1answer
359 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,...
8
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3answers
9k views

How to check if a video is completely downloaded?

I have a bunch of videos which I want to check if they are complete or not. Some of them may be downloaded partially, but they are not faulty. How can I efficiently check if these video are completely ...
0
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2answers
98 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 ...
0
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0answers
524 views

make xrandr output on two monitors

My notebook has an HDMI connection to external monitor. I want have xrandr to pass parameters so that the image is displayed on both internal and external monitors, and when the external monitor is ...
3
votes
3answers
6k 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 ...
1
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0answers
184 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 ...
2
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1answer
3k 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 ...
55
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5answers
25k views

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 ...
1
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0answers
1k views

How do I use VLC to create a video wall effect

I'm trying to build a system that plays a video, such as a scenic landscape or timelapse, split up across 3 large HDTVs to effectively create one large TV. So far, I've got the computer hooked up and ...
2
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0answers
455 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/...