Questions tagged [linux]
Questions specific to linux environment
33
questions with no upvoted or accepted answers
4
votes
0
answers
642
views
GStreamer mpegtsmux produces empty output file
I'm trying to construct a GStreamer pipeline to transcode MPEG2 video and MPEG1 audio in a MPEGTS container to H.264 and AAC and output to a filesink.
The problem is: the output file is empty.
If I ...
- 91
3
votes
0
answers
64
views
video stabilisation of tripod-taken video with many fast moving objects
Is there a way - in Linux - to stabilize with respect to a certain edge or region in the video? My situation:
I have a video taken with a tripod (well, not exactly, the camera is suspended and ...
- 131
2
votes
1
answer
990
views
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 ...
- 21
2
votes
0
answers
777
views
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&...
- 21
2
votes
0
answers
343
views
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
2
votes
0
answers
106
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
1
vote
0
answers
42
views
Kdenlive does not seem to be leveraging proxy clips
I am trying to edit some 4K clips in Kdenlive and so I would like to use the proxy clips feature to speed up editing experience.
I have enabled the feature by default:
I've also checked that it is ...
- 95
1
vote
0
answers
46
views
Less color and detail visible when videos are played in VLC (Linux, NVIDIA)
When I watch videos from my GoPro, the colors look much better in Dragonplayer (stock player with KDE). This is the case for both x264 videos:
With HEVC there is also a difference, although I think ...
- 111
1
vote
0
answers
135
views
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
vote
0
answers
30
views
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 ...
- 121
1
vote
0
answers
62
views
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
0
answers
387
views
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
1
vote
1
answer
170
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
0
answers
369
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 ...
- 111
1
vote
0
answers
2k
views
Switching between H.264 video streams on the fly?
I have several H.264 encoded MP4 files, as well as still images. From these I want to generate a single video stream that I can broadcast. The stream will be composed of alternating still images and ...
- 131
1
vote
0
answers
944
views
High bitrate in AVCONV converted MPG file causes DVD reading problem
I convert AVI to MPEG with folowing command:
avconv -i file.avi -c:v mpeg2video -b:v 6000k -c:a mp2 -b:a 384k file.mpg
When the MPG file has been burned to DVD it is hard to read afterthat. The DVD ...
- 13
0
votes
0
answers
18
views
The problem with converting ts files to mp4
So I download ts files from h264.m3u8. The files look like this "https://.net/data/3/a/e/6d162b532610fdae/h264_00000005.ts ". I merge them into one common ts file. And I'm trying to get an ...
- 1
0
votes
0
answers
8
views
Looking for a player that can change the background of an RGBA video
Is there a Video Player for Linux where I can play a RGBA .mov file and set a Background Color? VLC is displaying transparency as black and I've found no way to change that.
I know that OBS is capable ...
0
votes
0
answers
63
views
unable to record desktop using latest gstreamer in ubuntu 22.04
I can broadcast my desktop to a rtmp server successfully using
gst-launch-1.0 ximagesrc use-damage=0 show-pointer=false ! video/x-raw,framerate=30/1 ! videoconvert ! queue ! x264enc ! queue ! flvmux ...
0
votes
0
answers
61
views
When multiple windows are captured simultaniously can OBS capture only cursor in currently active window?
I am making a small video for some of my colleagues where I show them how CI/CD with GitLab and Kubernetes works (software development stuff). For that purpose I would like too keep 4 windows visible ...
- 101
0
votes
0
answers
129
views
FFMPEG hardware accelerated 10 bit downsampling to H264
I have a home setup where I use a Kubuntu 22 box as my home theater PC (HTPC) to play videos/movies/music in my living room. I also set up a raspberry Pi in the kitchen that receives a video stream (...
- 1
0
votes
0
answers
481
views
Raspberry Pi Youtube Livestream - ffmpeg error: av_interleaved_write_frame(): Broken pipe
I'm using a Raspberry Pi 3B (OS: Raspian) to livestream an attached camera feed to YouTube using the following command in a python script(I removed the livestream secret key):
raspivid -o - -t 0 -vf -...
- 1
0
votes
1
answer
392
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
votes
1
answer
2k
views
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 ...
0
votes
1
answer
456
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
0
votes
0
answers
334
views
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
0
votes
0
answers
2k
views
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
0
votes
0
answers
248
views
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
votes
0
answers
323
views
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
0
answers
155
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 ...
- 101
0
votes
1
answer
134
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
0
votes
0
answers
52
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 ...
- 1
-1
votes
1
answer
701
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 ...
