Questions tagged [linux]

Questions specific to linux environment

30 questions with no upvoted or accepted answers
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0answers
561 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 ...
3
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0answers
57 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 ...
2
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0answers
177 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 ...
2
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0answers
439 views

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 ...
2
votes
0answers
96 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. ...
1
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0answers
28 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?
1
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0answers
17 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 ...
1
vote
0answers
56 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
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0answers
273 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 ...
1
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0answers
98 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/...
1
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0answers
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 ...
1
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0answers
941 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 ...
0
votes
1answer
17 views

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 ...
0
votes
1answer
324 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
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0answers
27 views

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 ...
0
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0answers
59 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.
0
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0answers
54 views

Is it possible to interpolate a filter parameter in FFmpeg, over a range of frames?

...and if so, how do I do it? I've been playing around with a number of open--and that's critical for me--pieces of video editing software, and I consistently find the GUI to be kind of nice, but a ...
0
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0answers
17 views

Send picture profile (c-log…) to Canon DSLR in linux

I need to send some custom picture profile (c-log) to my Canon camera (60D) in order to shot videos. It can be done on windows using EOS Utility, but I can't find how to do with linux. I tried to ...
0
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0answers
37 views

How to play a video with caca driver synchronously with it's time?

might be that title a bit confusing, but what I need to do it's this: I want to play and record video with mplayer with caca driver with maximal number of rows/columns. The problem that it is becoming ...
0
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0answers
109 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 ...
0
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0answers
675 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=...
0
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0answers
96 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", ...
0
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0answers
233 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 ...
0
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0answers
105 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 ...
0
votes
1answer
59 views

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 ...
0
votes
1answer
35 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 ...
0
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0answers
155 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 ...
0
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0answers
684 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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0answers
36 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
votes
1answer
523 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 ...