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Questions tagged [linux]

Questions specific to linux environment

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24 views

ffmpeg How to reduce file size based in percentage

Using ffmpeg, how can I reduce file size specifying the percentage? Like, reducing 35% of file size. I want apply it on a for loop to reduce many file sizes. Thank you!
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1answer
20 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 ...
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0answers
20 views

Why Does My Network Camera Have Two Streams (+ Grabbing It With FFMPEG)

I am trying to ingest an RTSP stream from a network camera for use in a security system. Due to situations out of my control, the particular network cameras that I use vary quite a bit, so I have to ...
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0answers
8 views

Can Intel Integrated Graphics be leveraged to process 4K HEVC video on Linux?

I am using GoPro Hero7 Black version to shoot 4K HEVC (H.265) video streams. Below is the software and hardware configuration I am using to play the video on my laptop. VLC 3.0.4 Ubuntu 18.04 (...
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0answers
18 views

How to create simple lip-synced 2d animation?

I have: 2D character Audio file with speech Time spans of speech (for example, [00:00:01.15-00:00:04.50, 00:00:06.30-00:00:08:10, ...]) I want to create video, where lips are simply moving within ...
1
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1answer
30 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. ...
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0answers
51 views

FFMPEG Speed drops and warnings

I've been trying to stream from a BlackMagic DeckLink Mini Recorder to 4 different outputs using FFMPEG, but i get a huge delay let say more than 60 seconds of delay, it takes a long time to buffer on ...
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0answers
56 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 ...
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0answers
116 views

400% Render Performance Increase In Kdenlive With NVENC - But 1 Giant Problem

System: i5 6600K, 1050TI, Ubuntu 18.04, Kernel 4.16 I have successfully compiled mlt and ffmpeg with nvenc support using the official nvenc headers stripped from the Nvidia SDK. Rendering the first ...
3
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1answer
66 views

Nvenc produces corrupted video

Someone knows how to solve this? Hardware: DRIVER: 396.24 CPU: Ryzen 1700 GPU: Nvidia MSI 1050 TI Settings
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0answers
225 views

ffmpeg on Debian is very slow

I started using ffmpeg on Debian 9 and I am really dissapointed. My machine have 24 Cores and 48GB RAM. I am converting h265 mkv video to h264 mp4 and I have only 20FPS on every settings of -threads (...
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0answers
173 views

how to configure rtsp relay server

I have a task: get rtsp stream from ip cameras, add time and date to rtsp-stream, then stream it to network. Now i get stream from camera and add time/date to video via ffmpeg. I cannot understand ...
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1answer
122 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
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1answer
110 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="...
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1answer
1k 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) ...
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0answers
126 views

filter_complex without pipe (h264)

I want to overlay 2 video file and stream them with ffserver. ffmpeg -i 1.264 -i 2.264 -filter_complex "[0][1] overlay=0:0" http://x.x.x.x But I got Error: av_interleaved_write_frame(): Broken pipe ...
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0answers
14 views

SimpleScreenRecorder - video is much darker than real screen

I have noticed that SimpleScreenRecorder, which is a popular screen capture for Linux darkens the output. My recording settings were: MP4 h264, CRF: 0, ultrafast. I also tried with different codecs, ...
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1answer
221 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 ...
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0answers
46 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. ...
0
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1answer
38 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 ...
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0answers
144 views

My .avi files created with ffmpeg are bigger than I want them to be

I'm using ffmpeg to covert .mp4 (x264) Image Size: 992x720 to .avi (DivX). The original mp4 file is 845MB and my .avi file is 2.2GB. What can I do to make it smaller in size except increasing -qscale:...
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1answer
4k 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 ...
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1answer
955 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/...
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1answer
834 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
41 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
2k 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
1k 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
43 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
355 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 ...
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2answers
5k 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
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1answer
487 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
728 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
67 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
926 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
727 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
7k 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
3k 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
655 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 ...
3
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1answer
4k 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
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1answer
86 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 ...
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5answers
16k views

How to encode Apple ProRes on Windows or Linux?

Is it also possible to encode video with Apple ProRes on Windows and Linux?
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3answers
3k 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 ...
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0answers
577 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: ...
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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 ...
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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 ...
2
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4answers
10k 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
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2answers
219 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
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1answer
1k 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
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1answer
6k 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
350 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 ...