Questions tagged [ffmpeg]
FFmpeg is a complete, cross-platform solution to record, convert and stream audio and video.
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questions with no upvoted or accepted answers
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Outputing video and audio from file to virtual webcam and microphone
I'm currently trying to get a simple way to share a video with audio using Zoom (but not using the screen sharing).
The only way to really do it is to have the video sent to a virtual webcam and the ...
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Turned my DSLR into a webcam but Chrome does not recognize it
I followed this other post and managed to turn my DSLR into a webcam successfully. To test it, I can see the live video in applications like guvcview and my DSLR is recognized as Dummy video device (...
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Converting from shorten (.shn) audio files with error: "failed to read data from input file using format"
Since I can't find the answer here and I would like to be able to do so the next time I need to do this, here is how to convert shorten (.shn) audio files to another format that ffmpeg can handle (e.g....
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Supply correct pixel format & parameters from gphoto2 feeding into ffmpeg using v4l2loopback
I have Nikon D3300 camera and want to feed video output into my computer as part of live streaming with OBS.
I successfully installed v4l2loopback as well as gphoto2 on my Ubuntu 18.04. I already had ...
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Video plays fine on VLC but black screen on Totem
I have created a video (with no audio track) by C++ code which plays fine on VLC but shows black screen (with the same duration) on Totem.
What is wrong with the file?
totem video0.mp4 --gst-debug-...
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avconv pipe to v4l2loopback device
I use v4l2loopback module to create two video device. My intention is to pipe output from primary video device to these two virtual devices.
I can do that using ffmpeg:
ffmpeg -f video4linux2 -s ...
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How to capture infrared stream from webcam using ffmpeg?
I'm able to capture from my webcam using ffmpeg, but it's real color. But my webcam is advertised as having IR capability. How do I access this?
When I run ffmpeg -f v4l2 -list_formats all -i /dev/...
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1
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How to concat mp4 files with ffmpeg without having artefacts
To concat two mp4 or ts files (I've both formats) ffmpeg offers some
calls that I've tried. Both "concat protocol" (for h264 TS files) and "Concat demuxer" (for h264 PS files) produce artifacts that ...
3
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How to stream my screen using rtsp (like ip camera)?
Hy all,
At work, we migrated all computers at ubuntu 18.04. Before migration, we used windows 10 and Desk Camera app to recording screens and we used that to put in NVR like a IP Camera for ...
3
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Is it possible to combine two movie files into one, interleaved like a zipper using ffmpeg?
imagine you have two movie clips, each one has the same fps and geometry and total number of pics,now take the first pic of the first clip and place the first pic of the second clip after it, than ...
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Why ffmpeg error while trying to play live stream on a defined output device rather than on the default one?
I'm using Ubuntu 14.04. The aplay -L command produces the following output.
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
...
3
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how to get vdpau hardware acceleration using ffmpeg on ubuntu?
I am developing a multimedia player using ffmpeg. I am trying hard to get hardware acceleration through ffmpeg using vdpau hardware accelerator. I didn't get any success so far. Below I have mentioned ...
3
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Open broadcaster not installing
I'm trying to install Open Broadcaster: https://obsproject.com/download#linux
but I'm getting these errors:
The following packages have unmet dependencies:
obs-studio : Depends: libavcodec-ffmpeg56 ...
3
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Hue (tint, color) correction using avconv
I'm trying to make a demonstration of orange and blue color timing. I've been told I can do this in the YIQ domain by increasing the level of I and decreasing Q. So I want to take a video, rotate the ...
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mpd crashes on database update
Mpd (latest version from repositories, Ubuntu 14.10) crashes when refreshing the database.
At first it crashed on every m4a file, even with the necessary libraries (libmad0) installed and up to date.
...
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avconv/ffmpeg - audio slowly drifts out of sync, original is in sync
Almost all of the instructions I've read about drifting audio sync is regarding live screen recording. I'm simply trying to truncate useless video from the end of a raw DV file in an effort to prepare ...
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Splitting audio channels using pulseaudio
My mission is record desktop using avconv (ffmpeg) + record microphone input + use sphinx program which also need the same microphone for voice control.
Now, the problem is that if I start sphinx ...
3
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1
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How to stream a local video file over Internet using avconv/avserver?
As FFmpeg is going to be dropped from Ubuntu, it will be important to know how to broadcast videos over Intrnet using avconv. An official guide is available, but it doesn't give much information how ...
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Is there a way to convert cached webex files to some other format?
How can I convert webex files in the temp cache to generally usable media formats?
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Syncing Audio and Video Streams with FFmpeg to Resolve Timestamp Differences
I've encountered an issue with a video file where the audio and visual streams are out of sync. After some research, I've learned that this might be due to timestamp differences between the two ...
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ubuntu 23.04, no pulseaudio, only pipewire, ffmpeg, no audio when record desktop
On Ubuntu 23.04, there is only pipewire, no pulse audio.
When I use ffmpeg for record desktop, no sound is recording.
In case I use hw:1, it record one second of audio and then silence. Does ffmpeg ...
2
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getting black screen while trying to record dockerized lxde using ffmpeg
I have created a docker image that has LXDE and TightVNCServer.
# Pull base image.
FROM ubuntu
# Install LXDE and VNC server.
RUN apt-get update
RUN apt-get install -y xvfb
RUN DEBIAN_FRONTEND=...
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1
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Unable to Install ffmpeg in Databricks Environment
I used to install ffmpeg without any problem by running sudo apt-get -y install ffmpeg as a shell command in Databricks.
Suddenly, I've been getting a 404 error in some of the links as you can see in ...
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gphoto2 /FFmpeg: Could not write header for output file #0 (incorrect codec parameters ?):
First question here as I have been finding answers to everything else I had issues with previously, thanks to all who contribute here..
I followed this guide to use gphoto2 and ffmpeg to use my Fuji X-...
2
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0
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258
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Screencast monitor and speakers using ffmpeg: audio delay problem
Question? The task is to record simultaneously everything that we see on the monitor and hear from the speakers.
I wrote the following script:
Set the variable:
speaker=alsa_output.pci-[my speakers]....
2
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0
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How to merge multiple video files with different codecs? MP4/H.265
I have a very very very ugly script to merge multiple files of my football games (I have 10 cameras a game) and now I am starting to make highlights of each game. But some of the cameras have ...
2
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0
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996
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VLC plays an mp4 but mpv doesn't
I have videos that I have ripped off a streaming site, the vast majority play with mpv.
One or two, I get the error:
[ffmpeg/demuxer] mov,mp4,m4a,3gp,3g2,mj2: Invalid sample size -3
[ffmpeg/demuxer] ...
2
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Error when installing opencv (any version) on Ubuntu 18.04
I got an error in make command in opencv.
[/usr/bin/ld: /usr/local/lib/libavcodec.a(vc1dsp_mmx.o): relocation R_X86_64_PC32 against symbol `ff_pw_9' can not be used when making a shared object; ...
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Is it possible to install only parts of the ffmpeg headers?
I am trying to use the ffmpeg headers in a dockerized ubuntu environment. If I install all of the ffmpeg header files there it will use up to 900 mbs in image size. This seems not good for my usecase, ...
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GLIBC_2.27 not found when launching applications through Nautilus
I have VSCode installed and never experienced this issue before, but now after I installed some web camera utilities and video conversion I seemed unable to launch VSCode from Nautilus.
What works:
...
2
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How to reliably watch local 4k video at > 2x speed?
I'm using VLC ("VideoLAN") on Linux to play 4k video I have recorded. I'm trying to quickly review long segments so I want to play the video faster, at least 5x. But when I exceed 2.9x the video ...
2
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1
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How to add subtitles a complete folder using ffmpeg in linux
I need to batch subtitles with ffmpeg , the srt file has got the same name of the video file associated, for example : file1.mkv with file1.srt, ... file8.mp4 with file8.srt
how can I perform a batch ...
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v4l2 How to trigger automatic exposure adjusting?
I have automatic exposure set, but it reacts very slowly and sometimes not at all (but with cheese it works fine). I'm taking timelapse pictures with following command:
ffmpeg -f video4linux2 -s ...
2
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1
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How to remove chapters from mkv metadata
How do you remove chapters from mkv metadata on command line? Can ffpmeg be used for this?
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Ubuntu 18.04.1 playing MP4 doesn't work
Installed on three (one dell latitude laptop, one dell all-in-one and one ASUS desktop) systems Ubuntu 18.0.1.
After install cannot play, with standard installed Totem player, on any of the systems ...
2
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1
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Play mp4 video file, by piping avconv to avplay on Ubuntu 14?
On Ubuntu 14.04, there is avconv/avplay instead of ffmpeg/ffplay; version is:
$ avconv -version
avconv version 11.3-6:11.3-1~trusty, Copyright (c) 2000-2014 the Libav developers
built on Apr 13 ...
2
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0
answers
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ffmpeg avi xvid for Pyle Car Stereo
I've been trying to transcode video files so they play on my Pyle PLDN74BTI car stereo. I have some sample media of the twilight zone that plays just fine. I'm using ffmpeg -i to display the codec ...
2
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1
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How to use h264_mmal hardware decoder in RaspberryPi 3 in Snappy Ubuntu Core?
I have a program that makes use of the h264_mmal hardware accelerated decoder in Raspberry Pi 3. The same executable works fine on the same Raspberry Pi board if the OS is Ubuntu-Mate with gpu_men set ...
2
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0
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Why does installed version differ than what apt-cache madison indicates?
I recently installed ffmpeg on an Ubuntu 14.04 LTS server. When I run ffmpeg -version the output is:
ffmpeg version N-81995-gd790e48 Copyright (c) 2000-2016 the FFmpeg developers
I installed this ...
2
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Ubuntu 16.04 Opencv 3.1.0 Cannot open video source
I am using Ubuntu 16.04 and Anaconda 3.5. I was successfully able to build OpenCV 3.1.0 from the git repository. My make command is as followed
cmake -D CMAKE_BUILD_TYPE=RELEASE \
-D ...
2
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3
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How to convert video along with audio in h264 ffmpeg?
ffmpeg
ffmpeg version 3.1.1 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-4)
configuration: --enable-libmfx --enable-nonfree
libavutil 55....
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answers
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Compiler can't find libswresample library
I'm currently trying to compile this teamspeak bot on Ubuntu. My issue is that when trying to compile it, I get the following error:
CMake Error at /usr/share/cmake-3.0/Modules/...
2
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1
answer
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Cannot convert .wav file to .txt file using pocketsphinx
I'm new to to this Ubuntu. I'm using Ubuntu mate:
Distributor ID: Ubuntu
Description: Ubuntu 16.04 LTS
Release: 16.04
Codename: Xenial
Previously I had normal Ubuntu and I had installed ...
2
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1
answer
284
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How can I repair broken softwares?
I want to install ffmpeg as Documented here . but some errors are accurates when I want install on terminal:
The following packages have unmet dependencies:
libfaac-dev : Depends: libfaac0 (= 1.28-6)...
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I uninstalled Chromium. Why still extra ffmpeg codecs for the chromium browser in ubuntu update?
Chromium kept crashing on the gmail webpage (aw snap) and I have uninstalled it and installed goggle chrome.
In software updater, I see "extra ffmpeg codecs for the chromium browser" is this for ...
2
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0
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PulseAudio channel map at run time
Could I map (Swap) the channel at run time.
I am using the ffmpeg to record the both video and audio from two logitech cam/mic and bluetooth mic. Now currently at the starting of recording bluetooth ...
2
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1
answer
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mp4v and mp4a in Ubuntu VLC
In 13.10, I have this error in VLC:
[0x7f529c0038a0] main decoder error: no suitable decoder module for fourcc `mp4v'. VLC probably does not support this sound or video format.
[0x7f529c004470] main ...
2
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0
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TCP 5454 and 554 connection refused for rtsp streming via ffmpeg
I am trying to convert my rtmp streaming to rtsp streaming using ffmpeg. the following code is doing the convert
`ffmpeg -i rtmp://xxxxx.com/live/live1 -f rtsp rtsp://xxxxx.com:5454/test1-rtsp.mpg`
...
2
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1
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Error while adding a watermark to mp4 with FFmpeg
I try to watermark an mp4 file with ffmpeg and the following command :
ffmpeg -i originalvideo.mp4 -vf « movie=watermark.png [wm];[in][wm] overlay=0:0:1 [out]« watermarkedvideo.mp4
after some ...
2
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0
answers
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Xubuntu 12.10 and FFMPEG webcam
Having a problem running ffmpeg to an ffserver in a brand new install of Xubuntu 12.10.
I just installed Xubuntu 12.10 from scratch, then installed ffmpeg. I plugged in my webcam (mind you I have ...