Questions tagged [linux]

Questions specific to linux environment

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1answer
22 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 ...
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1answer
13 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 ...
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0answers
10 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/...
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1answer
68 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 ...
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0answers
30 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 ...
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0answers
104 views

FFMPEG: Publishing a Directory of video files (already encoded no transcoding needed) to RTMP & dealing with disconnects

I am currently using the below bash script to publish my directory of .mp4 video files (via concatenated list) to a RTMP server. My primary struggle is when FFMPEG loses connection to the server. The ...
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0answers
36 views

Receiving libx264 feed and viewing it through guvcview using v4l2

I am attempting to set up a low-cost home security system. At one end of my house I have a Raspberry Pi connected to a Logitech C920 webcam running the following command: ffmpeg -re -i /dev/video0 -...
2
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1answer
171 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) ...
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1answer
1k views

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, ...
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0answers
273 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? ...
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0answers
29 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
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1answer
35 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 ...
1
vote
1answer
252 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. ...
1
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2answers
673 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 ...
3
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1answer
88 views

Nvenc produces corrupted video

Someone knows how to solve this? Hardware: DRIVER: 396.24 CPU: Ryzen 1700 GPU: Nvidia MSI 1050 TI Settings
1
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1answer
278 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 ...
1
vote
1answer
362 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="...
3
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1answer
3k 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) ...
-1
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1answer
391 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
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0answers
68 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. ...
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1answer
43 views

Cannot boot up OBS, prints an error

Distro: elementaryOS Ubuntu Linux 16.04 Kernel: 4.4.0-72-generic OBS version: 18.0.1 I tried installing OBS via the installation instructions for Ubuntu Linux, but when I tried to run obs, I received ...
4
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1answer
8k views

convert KAZAM video file to a file, playable in windows media player

I have some mp4 video files that are created by KAZAM in Linux. But I need to play those files on Microsoft Windows only by Windows Media Player (for example I can not install VLC media player). Also ...
1
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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/...
2
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1answer
2k views

Add semi-transparent box around subtitle

Hey guys how can I add box around subtitle like on picture with ffmpeg here is mi current command ffmpeg -i movie.mkv -strict -2 -vf "subtitles=subtitle.srt:force_style='FontName=ubuntu,fontsize=30',...
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1answer
88 views

FFMPEG add resize to my comand

Hey guys how can I add scale/resize command to mine command, because where ever I place the "scale" command I got error Here is mine ffmpeg -i movie.mkv -strict -2 -vf "subtitles=subtitle.srt:...
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2answers
4k views

“ffmpeg” set fontsize and font

Im trying to set font and font size but i can use only one of the filters not both here is mine command ffmpeg -i movie.avi -strict -2 -vf subtitles=subtile.srt:force_style='FontName=ubuntu, ...
1
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1answer
3k views

Crop selected area in all videos

I have many videos in a folder which I want to crop in same way. I want to remove 25px from the bottom part of all frames of all videos. All the videos are 1280x720p and have same format which is mp4....
3
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0answers
54 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 ...
4
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0answers
460 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
2answers
9k views

Concate two video file with fade effect with ffmpeg in linux

is there anyway to concate two video file with fade effect with ffmpeg in linux? something like this: ffmpeg -f concat -i input.txt -c copy "--with:fade:out-in" output.ogg
0
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1answer
664 views

Can I use a Linux Render Farm with a MAC Workstation running Adobe Premiere?

I am building a render farm running linux and I would like to be able to send my adobe projects to it for rendering from a mac workstation. I see that it's doable with a windows workstation(Build ...
0
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1answer
920 views

Adobe Premiere Pro Rendering in Linux

I was really wanting to build a Raspberry Pi Linux Cluster (~20GB RAM, etc). I was wondering if it would be possible to render video from Adobe Premiere Pro to Linux and how I would incorporate a ...
3
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1answer
76 views

Can't get audio and video speeds to play at original speeds

When I import audio and video from different sources into a project, I can't get them to play at the corrects speeds. For example, if I play the video in vlc player, it plays fine, if I play the ...
5
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1answer
1k views

Video transitions and filters - how to create custom ones?

I am wondering if there is a possibility to do custom video transitions or filters. Like the video spiraling out, little squares appearing, circling out or something like that. Wiping the video out ...
2
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3answers
1k views

Post processing - image stabilisation

I own a Panasonic HC-V130. Recently I've read an article about image stabilisation in a computing magazine. Can this be achieved without a special camera? I am using too much zoom to hold the camera ...
2
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1answer
9k views

Build linux render farm in order to render adobe premiere projects [duplicate]

I edit my videos on Adobe Premiere (or even Edius) and I want to build a linux based render farm for rendering my projects. The concepts I've found in my research are 'render manager' and 'frame ...
4
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1answer
4k views

Can you render Adobe Premiere or After Effects projects on Linux using a render manager?

I'm looking for a way to render Premiere or Edius projects on linux via command line. As you may know, there are a lot of render managers like Deadline, Render Pal or Smedge in order to build a ...
2
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0answers
803 views

Rendering edit on linux [closed]

I use Adobe Premiere for editing and rendering videos which is a windows based software and then I use ffmpeg for converting those video clips into different qualities. As you may know rendering ...
4
votes
1answer
5k views

Adding metadata for films/TV shows on Linux

I am looking for an open-source solution for automatically pulling films/TV shows informations. I've found MetaX (Windows only) and Subler (MacOSX only) from a post here. Apparently metadata sources ...
2
votes
1answer
89 views

Linux - looking for a way to produce analog effects for video

I am looking for a way to make analog video effects like those: You may want to turn the volume down a bit: If there's no convinient way to do it i can head to ...
17
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5answers
25k views

How to encode Apple ProRes on Windows or Linux?

Is it also possible to encode video with Apple ProRes on Windows and Linux?
6
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3answers
4k views

Sync separate audio to video+bad-camera-audio, free NLE recommendations

My use-case, in case the details help people understand what I'm looking for: My brother needs some videos of him singing while playing the piano, to send in as an audition for a dinner theater. For ...
1
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0answers
609 views

Any m2ts optimizer under Linux? [closed]

My goal is to optimize m2ts generated by ffmpeg for HLS because the generated m2ts has lots of structural overhead. The below is an example of the result analyzed by Apple Media Stream Validator: ...
0
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1answer
1k views

What tools do you use for command line editing? [closed]

[edited to be more like a question.] I have been producing video using a combination of ffmpeg, mencoder and graphicsmagick for several years. Mostly it is because of not only the sorry state of ...
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 ...
3
votes
4answers
13k views

What is good software for camera recording under Linux?

I use Linux(Mint Linux Petra) and will probably switch to Ubuntu 14 soon. I need to record video with my camera on my laptop(imagine I use a web-camera for simplification) and I need to see real-time ...
3
votes
2answers
238 views

What is good software for video editing under Linux?

I plan to create some homemade video lectures and I am under Linux. Is there comfortable open-source tool that has the following abilities: to clear noise to have a few sound channels to allow adding ...
2
votes
1answer
2k views

How to get a crisp, exact color match for lossless screen-cast?

Background Recording a screen-cast (no audio) in Xubuntu Linux. The following image shows a side-by-side comparison of the video (left) versus the desktop (right): The screen-cast is recorded using: ...
4
votes
1answer
7k views

Video Capture using ffmpeg (V4L2 indev) Results in Bad A/V Sync

I actually contributed to a bug report on this issue a year and a half ago ( https://trac.ffmpeg.org/ticket/692#comment:15 ). Basically, the problem is that using ffmpeg to record from a USB video ...
2
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1answer
386 views

Kdenlive Render Effects

I'm using Kdenlive on Linux Mint 16, and I was finding that my keyframed "Box Blur" effect was significantly slowing down playback, and so I thought there might be a way to render the effects on a ...