Questions tagged [linux]

Questions specific to linux environment

23 questions with no upvoted or accepted answers
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4
votes
0answers
488 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
votes
0answers
56 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
87 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
11 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
vote
0answers
58 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 ...
1
vote
1answer
2k views

Stream desktop (linux) with FFMPEG to VLC

Hey guys how can I stream my desktop to vlc I did found some examples but they do not work;First I need to start ffserver with some configs example here https://www.organicdesign.co.nz/...
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
vote
0answers
934 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
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0answers
4 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 ...
0
votes
1answer
31 views

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, ...
0
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0answers
35 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
49 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 ...
0
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0answers
77 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
votes
0answers
43 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
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0answers
9 views

PC control of multiple DSLR for video recording

I have two Canon 60Ds and a ZOOM F8n. I capture interviews with this setup that I later edit in Resolve. I'm trying to automate the capture workflow. I'm looking for a desktop software (preferably in ...
0
votes
1answer
37 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
20 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
32 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/...
0
votes
1answer
820 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 ...
0
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0answers
55 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
votes
0answers
401 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
32 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
436 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 ...