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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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1answer
413 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 ...
3
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2answers
3k views

how to download with youtube-dl without merging

How can I disable audio and video merging in youtube-dl? In other words, how do I force youtube-dl to download a single incrementally playable video? The problem with separate audio and video files ...
1
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1answer
879 views

FreeBSD - best way to set console vidcontrol mode from boot without disrupting scrollback buffer info

My system uses vidcontrol to change video mode, and I'd like to set a tighter video mode from boottime, for all console windows/devices. man vidcontrol says to do this by editing it into rc or rc....
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0answers
23 views

streamer not recording audio

I am trying to record a video from my webcam with streamer, this is my command: streamer -t 1:0:0 -c /dev/video0 -f rgb24 -r 5 -o outfile.avi Unfortunately this is not recording any audio, which ...
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0answers
951 views

find original video if you have a short clip from it

I while back I wrote a paper with simulations, and to illustrate some points, I made a few cuts from chosen from long videos of the simulation running. Unfortunately, I absolutely forgot to record ...
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2answers
1k views

trim and fade in/out video and audio with avconv (or different tool)

I'm using avconv for trimming and converting videos. Let's say I want to drop the first 7 and last 2.5 seconds of the video stream and one audio stream of an one-hour mts file: avconv -i input.mts -...
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0answers
70 views

adobe premiere elements 12

My MS Win8.1 got corrupted on a Dell M4500. I would love to just run linux on the new SSD I installed and not pay MS another dime for Win10 pro. But I need Adobe Premiere Elements (linux editors don'...
3
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1answer
115 views

Delay Hdmi Output to one of the screens

I need to delay the output to one of my screens, I tried looking for the answers all over the Internet but to no avail. Is this possible, if so how can I do this in terminal? Update: Both of my ...
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0answers
499 views

Is there a video player for Linux that has thumbnail previews?

When watching videos on Youtube some of them display thumbnail previews when the mouse if hovered along them time line? The picture below shows the thumbnail of the video at 3:31. Some Windows video ...
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3answers
9k views

Making subtitles (.srt) bigger or smaller with mpv

How do I make subtitle appear larger or smaller with mpv ? The subtitles are in .srt format most of the times but sometimes also in the movie itself ? Is there a way to do that ? Also is there a ...
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0answers
538 views

How to get video mode given by hwinfo when it doesn't work? And how to set login resolution?

I tried to follow the suggestion at this previous post: Use sudo hwinfo --framebuffer as described, choose a video mode you would like to see during boot in console, then add the option vga=nnn to ...
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0answers
74 views

Youtube videos after sleep mode

(This is my first post here, I hope my post is ok) After sleep mode (close / open laptop screen), if I try to play a video on youtube the video doesn't play and I have this message : "If playback ...
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1answer
407 views

guvcview records audio but only first frame of video

guvcview used to work okay, but then there was an update and it stopped working. It records audio okay but only the first frame of video shows. I've tried different rendering methods, no difference ...
0
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1answer
75 views

How to fix Intel DRI crashes when playing video full screen?

When playing video in Orion, I get an error and an orion segfault like: Failed to open BO for returned DRI2 buffer (1920x1080, dri2 back buffer, named x) This is likely a bug in the X Server that ...
3
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0answers
263 views

“Stretching” subtitles with command line tool

I got a video file with a duartion of e.g. 30 mins and a subtitle file that belongs to this video. But the subtitle file only lasts 25 minutes. Now I'm searching for a way to achieve the following: I ...
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0answers
10 views

How do you make Amarok skip video files when scanning your library?

I use Amarok as a music player; and it scans a bunch of folders of mine for files to include in its catalog. The thing is, some of these folders have video, rather than audio, files in them. These ...
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0answers
1k views

sound recording with motion?

I want to set up a daemon that starts recording video with sound when it detects noise or movement. There are tools that do that separately but can they be done at the same time? Can I set up motion ...
6
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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....
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3answers
281 views

Concatenate consecutive files

I have a list of videos in a directory that I want to concatenate. Video1.mpg Video2.mpg . . . Video35.mpg I want to concatenate this in the order of their number without having to write all of them ...
0
votes
1answer
569 views

How to read videos in openCV on a linux machine?

I am trying to run some code from the internet (which works perfectly fine on another computer). But the software doesn't work because it can't open video files in openCV. According to a person I had ...
3
votes
1answer
43 views

Is there a utility to find artefacts within an media stream?

I was running a media video file under .mpv . After approx. half the movie there was a jump from where it was and went to the end. Is there a utility to asess the health of a media file.
2
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1answer
102 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 ...
0
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1answer
65 views

Boost Video Performance

I am having Broxton board. If I install Windows-10 onto it and play Ultra-HD video then it plays very smoothly. But If I install Ubuntu-16.10 onto the same hardware then the performance of same video ...
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1answer
531 views

Find all videos by codec (and not by container formats or MIME type)

How can I get the list of all my videos with the used video codec? I found some intersting commands like mediainfo, ffmpeg or exiftool but they giving a lot of informations only by one video. The ...
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2answers
375 views

Blacklist a USB device only for use by uvcvideo [closed]

I'm using several USB devices on a little ODROID running Gentoo: > uname 3.10.80 > lsusb Bus 001 Device 005: ID 1b71:0056 Fushicai Bus 001 Device 004: ID 0bda:2832 Realtek Semiconductor Corp. ...
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1answer
4k views

what is “sys/videoio.h”?

trying to install opencv on my centos6 and always got this error meesage fatal error: sys/videoio.h: No such file or directory #include <sys/videoio.h> Anybody understand what sys/videoio.h is?...
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2answers
2k 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 ...
1
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1answer
398 views

Incorrect scene change detection with avconv

According to this article I used successfully the command $ ffmpeg -vf "select='eq(pict_type,I)'" -i somevideo.mp4 -vsync 0 -f image2 /tmp/thumbnails-%02d.jpg I tried the second command: $ ffmpeg -...
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2answers
2k 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 ...
3
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2answers
5k 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 ...
3
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2answers
3k views

mpv stepping through frames

When using mpv to step through frames (. for stepping forward and , for stepping backward), the forward stepping rate is much faster than the backward stepping rate. The forward rate is about the same ...
4
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1answer
2k views

How to strip GPS location data from an MP4 video file?

I have a video file captured with a smartphone. I want to remove the GPS location data written into it, leaving all other information intact. I tried some sed commands, but nothing seems to work.
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2answers
69 views

How can I install all video codes into vlc player?

I can not play all DVD's on my DVD ROM. I was told that I need to install codes for VLC. You should be able to do this via the Terminal, I am not shore of the command string to use. sudo apt-get ...
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1answer
4k views

Is there a way to find out the frame-rate of a subtitle file?

While I can find the frame rate of movie via - $ mediainfo $somemovie.$format | grep Frame rate Is there anything which tells the frame-rate of a sub file, (.srt) ?
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0answers
36 views

what media browser/player supports bookmarks in a playlist that loops

Sometimes I decide "I want to watch the next video in this playlist". Kodi/xbmc has a check mark that indicates "you have already watched this video" and another icon that indicates "You started ...
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1answer
2k views

Arch linux boot goes into black screen on laptop with Intel HD onboard graphics

I am on a Dell Inspiron 11 3000 series with an Intel Celeron N3050 processor using integrated Intel HD Graphics (Braswell).The CPU architecture is 64-bit (x86_64). The screen has a 1366 x 768 ...
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0answers
14 views

UPCapture a part of a window

I'm running Arch Linux. I want to make a video. I want to record a part of a window. I want to record my window even if there is some other window on top of it (the top window should not appear in the ...
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0answers
45 views

dvgrab error: driver recieved an incomplete frame

I am unable to use my DV webcam: # dvgrab -input /dev/video1 Waiting for DV... End of pipe "": frame dropped: timecode 00:00:00.00 date 1999.11.30 00:00:00 This error means that the ...
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1answer
1k 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 ...
0
votes
1answer
451 views

The “-zoom” option slows down mplayer

I am working on embedded Linux.(arm) I am using mplayer. In general, the video plays well. (# mplayer aaa.mp4) However, using the "-zoom" option will slow video playback. (# mplayer aaa.mp4 -zoom) ...
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0answers
600 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 ...
2
votes
3answers
10k views

How to view and play .mov files on Ubuntu 16.04 LTS

I just uploaded some files to my laptop running Ubuntu 16.04 LTS using Xender (which is great). The files are pictures and 1 video .MOV extension. When I try to view or play them, I get an error ...
1
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2answers
928 views

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 (...
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 -...
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1answer
604 views

How to do take webcam picture with repeatitively with a given interval (ffmpeg)?

The command ffmpeg -f video4linux2 -s vga -i /dev/video0 -vframes 3 /tmp/vid-$ts.%01d.jpg allows to take 3 frames with a certain interval. How do I specify the time interval between each shot. PS: ...
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0answers
43 views

How to directly play a ffmpeg generated output instead of writing it? [duplicate]

Say I have a ffmpeg command that generates a video video.mp4: ffmpeg [options] video.mp4 How can I directly play the video and not write it instead of writing the video without playing it? To be ...
0
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1answer
15 views

Why does mkvmerge not create two equal files after issuing the same command?

I have a .mkv file which I want to delete one audio track from; let's call it source.mkv. The ID of the audio track I want to remove is 1. So I issued this command: mkvmerge -o out.mkv -a 2 source....
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0answers
69 views

Local video (mp4) files stutter using Debian, but not when viewing youtube, flash etc

My local video files (mp4) are stuttering (i.e. lagging, not playing smoothly) when I play them from the hard drive (SSD) or DVD. Online videos work fine. What could the problem be? Specs: 1.86GHz ×...
0
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1answer
351 views

mplayer text mode set screen dimentions

I'm using this command to watch youtube videos from command line youtube-dl https://www.youtube.com/watch?v=19jv0HM92kw -o - | mplayer -vo caca - and I find it very amusing. However the player ...
2
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1answer
38 views

record image effects as animations

I've done only some very basic stuff with ImageMagick (mainly resizing, also messing with color filters a bit). Imagemagick has a simple example for overlaying images: convert anthony_1.jpg ...