Questions tagged [linux]
Questions specific to linux environment
91
questions
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10
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Use ffmpeg to stream rawvideo from a USB camera
I have a image sensor that streams 640x480 in RAW8 format. A USB controller is receiving this data, packing two pixels of 8-bits each and sending to USB as a 16-bits per pixel YUV422 format (this is ...
- 1
0
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0
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180
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FFMPEG conversion failed at random times on live stream to youtube
I am running a bash script using ubuntu server on arm64 that live streams video and audio to youtube, heres the script below
#! /bin/bash
VBR="8000k"
FPS="24"
QUAL="superfast&...
0
votes
1
answer
48
views
Extreme video stabilization in Linux, again
I have a 3840x2160 MOV file taken with my EM1.II Olympus camera. It is a videoclip of a tiny bird taken in the wild without any aids. Hence, despite the good stabilization feature of the camera, the ...
- 101
0
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1
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21
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How to put a trailer clip in the middle of the main video with FFMPEG?
I have two videos of the same format encoded with the same codecs. I want trailer.mkv to be played after n minutes in the middle of main.mkv. After playing trailer.mkv, the rest of the main.mkv will ...
- 88
0
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1
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682
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How to obtain the correct framerate with ffmpeg image2pipe format?
I have 40 .jpg in my dir folder and want to create a video at 20fps from them. I've tried the following command:
find dir/ -iname '*.jpg' | xargs cat | ffmpeg -f image2pipe -framerate 20 -i - -s ...
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0
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37
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ffmpeg stable for only few minute then start eating memory and cpu
I'm trying to record a website to video at 1080p. Here are my steps
I started a Xvfb screen at 1920x1080 and run chrome in it.
I went to an Youtube video.
Start ffmpeg to record this screen
I ...
- 101
0
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1
answer
149
views
DaVinci Resolve 16 playback sound not working (Linux)
With default configuration there's no sound present.
I've tried different speaker configuration without any difference.
- 195
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1
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250
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Linux mkv packages for VLC
The video converter incorporated in VLC warns me when I select the MKV format with the message: This muxer is not provided by VLC. It could be missing.
Is there an official list of these MKV-related ...
- 101
1
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0
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45
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How Do I Make Kdenlive Use Multiple Threads For Import?
Adding a large clip with Kdenlive takes a long time.
When I look at the system monitor it is using a single core at 100%
How do I make the input process use multiple cores?
- 111
1
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0
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22
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What Liunx video editors support keyframed speed ramping?
On Mac OS, Final Cut Pro supports speed ramping. How about Linux video editors?
Kdenlive and Shotcut don't support speed ramping at all, so it has to be done manually. Apparently the Olive editor ...
- 111
2
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0
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218
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Stabilize MP4 from gyroscope metadata? (Insta360)
I just got an Insta360 One R 1-inch sensor and the footage is shaky as hell. I realised that you need their desktop application to actually stabilise in post-production but since I'm on Linux this is ...
- 121
1
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0
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56
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a software program that allows me to draw on the screen while a video is playing and outputs a new video with the drawings on top of the old video?
As stated in the title, it is as simply as that. I need a piece of software that plays a video and then allows me to draw on top of the video and then the output will be a new video with the draws on ...
1
vote
1
answer
385
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Convert TTML Subtitles to STL or SRT in Linux
I want to convert a file with TTML subtitles preferably to STL, or to SRT (less preferred). I thought that I would be able to do it with ffmpeg but apparently they do not support it, because the TTML ...
- 291
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1
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49
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change Lightworks folder [Linux]
I've installed Lightworks Free on Linux Debian.
When execute, it generates a Lightworks directory in /home/USER.
After move it to another directory where got all the programs, and execute it again, it ...
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0
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142
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Converting/filtering/deinterlacing VHS captures on Linux
I'm pretty much a novice video editor especially on Linux. I'm looking to take a bunch of old home videos I captured using ffmpeg and clean them up as painlessly/automatically as possible. At this ...
- 101
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0
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986
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FFmpeg works in linux and same command in windows get me error Invalid data found when processing input
I have remote index.m3u8 file and I want to download it with ffmpeg.
The contents file is:
#EXTM3U
#EXT-X-TARGETDURATION:6
#EXT-X-ALLOW-CACHE:YES
#EXT-X-PLAYLIST-TYPE:VOD
#EXT-X-KEY:METHOD=AES-128,URI=...
- 101
1
vote
1
answer
464
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ffmpeg: Placing an overlay over multiple images
I am trying to overlay a png image onto a series of images (a few hundred images), I will later take this series of images with the overlay and construct a movie out of the series of images. I don't ...
- 13
2
votes
1
answer
593
views
DaVinci Resolve Python 3.6 not found
I'm trying to run some basic scripts on Linux (Debian), however no python can be found.
Both Python 2 and 3 are present on the system.
$ python -V
Python 2.7.18
$ python3 -V
Python 3.8.5
- 195
2
votes
1
answer
187
views
DaVinci Resolve ignores MOV (QuickTime) metadata
When importing MOV files on Linux, DaVinci Resolve seems to use only modification date from filesystem, but completely ignores metadata from movie file:
Using e.g. exiftool we can fetch date ...
- 195
1
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0
answers
323
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OBS in Linux can't find NDI sources from other PC running Skype in Windows
As SkypeforLinux has no NDI support, I decided to split the work between two computers. A windows laptop to manage Skype videochatting with NDI support and a Archlinux PC with OBS and the obs-ndi ...
- 11
0
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1
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206
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Concat 2 video and add watermark first video ffmpeg
I have a Video #1, it has audio. Also I have a Video #2, with audio too. I would like to concat the #1 and #2 (or play #1 first, and then #2) and then add a watermark in #1 for the rest of the video, ...
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3
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0
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583
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How can I create a LUT on Linux with free and open source software?
I use Linux for everything media production. I shoot RAW and process images with Darktable.
Now that I've started making videos too (4K ProRes), I need to apply a LUT to them in post. This requires ...
- 131
0
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0
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126
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What is the recommended settings for video editing using ffmpeg?
I am quite new for using FFmpeg, and I am using FFmpeg in screen recording. I checked the online documentation in this link ffmpeg documentation "Capturing your Desktop / Screen Recording", ...
- 101
0
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1
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331
views
How do I crop multiple areas of each frame of the video using ffmpeg?
For each frame I want to crop multiple areas using ffmpeg but I am not sure how to proceed.
This is what I have done to crop one part of the image,
fmpeg -i video.mp4 -filter:v "fps=1,crop=759:41:...
- 3
1
vote
1
answer
371
views
ffmpeg log missing "dup" and "drop" key-value pairs
For some reason, my ffmpeg output log does not show dup and drop key-value pairs.
expect:
...
frame=563 fps=138 q=23.0 size=13056kB time=00:00:09.42 bitrate=11346.8kbits/s dup=0 drop=0 speed= 2.3x
.....
- 113
1
vote
1
answer
1k
views
Using FFMPEG to create video from images in sub folders
I know I can create a video from files in a folder like so:
ffmpeg -f image2 -i %*.png out.avi
But if the folder I am in have sub-folders can i use some sort of switch to read those image files in ...
- 583
0
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1
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109
views
Encode a small proxy file with multiple audio streams for editing on Linux
After capturing 2K video in 444p with OBS, I need to transcode it to a low quality proxy version that's still easy to scrub and not a huge file. I capture 3 audio tracks in 32-bit PCM and the image ...
- 141
0
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0
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247
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FFMPEG Live stream loop with overlay - Errors
I'm trying to do a livestream with a video loop, sound from the desktop and an overlay image that updates when I replace the file and a text that also updates when a file is replace but I seem to be ...
- 1
0
votes
1
answer
86
views
USB Webcam not working with USB Microphone
I have two USB devices: a webcam and a microphone. I can play the webcam's video into VLC and GUVCView. However, I want to use the microphone for another application. The issue is that launching ...
1
vote
2
answers
2k
views
How to render Adobe Premiere or After Effects projects on Linux?
I'm looking for automating video editing and rendering tasks on Linux. Is there a way I can use Nodejs to automate Adobe Premiere or After Effects on Linux?
0
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2
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23
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Video production at higher quality - alternatives and solutions
My question here is a redirection per suggestion of my original question over here
I have an i5 4th gen CPU which can support 2k displays and output 2k signal. And I have an AMD Radeon R7 graphics ...
0
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0
answers
118
views
ffmpeg fake camera and mic out of sync
This is on linux with pulseaudio. I need to record a video with a rather bare-bones recorder that runs in chrome. I decided to fake a camera and a mic so that I can edit the video then use ffmpeg to ...
- 1
0
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1
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66
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how to pipe:/// through a .sh or Python script, or use some sort of setting files with FFMPEG
First post, so be kind please :)
So a quick bit of history. I am using tvheadend, and the inbuilt transcoder murders my CPU, and provides average quality output (it's powered by ffmpeg), if I pipe ...
- 26
0
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1
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56
views
How to easily extract start/end times of several clips within a video?
I very often get videos from which I need to extract about 1 to 5 clips.
Currently I watch those videos in VLC and take note of the start/end times that each of the clips span. I feed that into ...
- 101
1
vote
0
answers
115
views
FFMpeg kmsgrab record pixels in incorrect order
ffmpeg -f kmsgrab -i - -framerate 60 -vf 'hwdownload,format=bgr0' -preset ultrafast out.mkv
This is how a video frame should look like
This is how it is recorded by ffmpeg
https://drive.google.com/...
- 11
1
vote
1
answer
4k
views
Export multiple clips from one video as separate files
I'm looking for video editing software with a GUI that will fit my needs.
I've downloaded the video of the public comments from our most recent local city council meeting. 17 people gave public ...
- 141
0
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0
answers
202
views
Video seeking doesn't work for files recorded from a camera using ffmpeg
I'm using the following command to record videos from a camera:
ffmpeg -framerate 30 -video_size 1280x720 -t 00:58:00 -i /dev/video0 /home/myuser/my_video.mp4
The problem is that the resulting video ...
- 101
2
votes
1
answer
644
views
Combining two video fields into one (to create an interlaced video)
I have two separate video fields (top.avi and bottom.avi) and I would like to merge them to create an interlaced video.
Is it possible to do this with ffmpeg? (or any other tool for Windows or Linux)
...
- 23
0
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1
answer
5k
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FFmpeg with OpenCL support - Ubuntu 18.04
Recently I asked about GPU acceleration in FFmpeg using AMD Radeon (AMD support for ffmpeg? Can't get my dedicated GPU to work). After many tests I see that fighting with this topic is hard, ...
- 21
0
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0
answers
833
views
How to fix interlaced mpeg2 video marked as progressive?
Is there a way to use ffmpeg (or anything else that can be used in linux) to fix an interlaced video marked as progressive, and mark it as interlaced so that I can get rid of bad interlaced frames?
...
0
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0
answers
43
views
Joining video files together getting gray/scrambled frames at transition point
I have an MPEG-TS video file of 60 seconds that was split in half (30 sec x 2 files). When I concatenate back (cat unix) the two video parts, during the play of the video right at the moment when ...
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2
votes
1
answer
67
views
Is there an app that can automatically separate scenes/clips from a video file and export them?
I am looking to parse a collection downloaded YouTube videos that are actually compilations containing clips from several different videos all over the web. I would like for this program to ...
- 151
1
vote
1
answer
455
views
How to split video in small clip?
I'm trying to split a video (50-100Mo) into several small clips of a few seconds each. I don't need re-encoding, hence my use of codec copy.
However some of the resulting clips don't have any video.
...
- 113
1
vote
2
answers
2k
views
Audio/video sync software for Linux (preferably open source)
I'm looking for a program that can synchronize audio and video from separate files. PluralEyes does this. I'm looking for something that runs on Linux and preferably is open source.
I imagine a CLI ...
- 231
3
votes
1
answer
120
views
Nvenc produces corrupted video
Someone knows how to solve this?
Hardware:
DRIVER: 396.24
CPU: Ryzen 1700
GPU: Nvidia MSI 1050 TI
Settings
- 143
1
vote
1
answer
507
views
How to use MELT or FFMPEG for layering of a video (i.e. shifting an overlay of the same video by one frame to remove flicerking from LEDs)?
I am looking for a possibility to remove the flickering from LEDs on a video under Linux on the commandline. To do that one would have to
Put the video on one track
Put the same video on a second ...
- 13
1
vote
1
answer
694
views
ffmpeg cut same video to multiple pieces
For the project that I'm working on I have to cut some parts of same video with some subtitles. So I made a bash file that executes multiple ffmpeg commands like this.
ffmpeg -i input.mp4 -vf scale="...
- 113
4
votes
1
answer
6k
views
RTSP to RTMP converting fails after specific time only when IP camera enters night mode
I have bought a cheap IP camera Escam QF002 producing output in RTSP.
I'd like to secure it with RTMP or HLS stream served by nginx with nginx-rtmp-module.
For this I'd copy the video stream (h264) ...
- 181
-1
votes
1
answer
574
views
Streaming HLS from a video4linux2 virtual video device
I'm trying to accomplish a few things at the same time with the raspberry pi camera;
create an HLS live stream
take regular interval jpg snapshots and save them to disk
irregularly record short ...
2
votes
0
answers
97
views
Switching channels without cutting video into clips in kdenlive
I'm using KDEnlive to edit multiple videotracks. I have the tracks synched, but they are different lengths. In a preview of the video I can sort-of live edit by switching off different video-channels. ...
- 121