All Questions
20 questions
5
votes
1
answer
3k
views
take picture with ffmpeg but wait for focus
I'm trying to take a picture from the terminal using ffmpeg with command:
ffmpeg -f video4linux2 -s 4208x3120 -i /dev/video1 -qscale:v 2 -frames 1 -ss 00:00:20 out.png
However it seems to ignore the ...
- 935
2
votes
1
answer
1k
views
How to rollback ffmpeg version to desired version? Is rollback needed in this scenario?
This is a ubuntu 16.04 running on armhf board.
I use ffmpeg for recording video from webcam. The process kind of works best in a version of the ffmpeg. I want to install/rollback to the particular ...
- 131
1
vote
1
answer
1k
views
How to encode / convert a complete folder using ffmpeg?
I have 20 music videos in one folder and I want to change the quality from 1080p to 720p with ffmpeg, because I'm tired of having to convert every single file.
So I want to ask for a solution how to ...
- 33
3
votes
2
answers
3k
views
How to convert an mp4 video by 180 degrees using ffmpeg or mencoder
After reading about how to convert a video by 90 degrees
I tried these commands:
mencoder old.mp4 -oac lavc -ovc x264 vcodec=mpeg4 -vf flip,mirror -o new.mp4
mencoder old.mp4 -oac lavc -ovc x264 ...
- 113
2
votes
1
answer
3k
views
Error installing zlib1g-dev in ubuntu 16.04 desktop
I am trying to install ffmpeg in Ubuntu 16.04 and it has a dependency package zlib1g-dev. when running sudo apt-get install zlib1g-dev. I am getting the below error
The following packages have unmet ...
- 21
0
votes
1
answer
100
views
Manipulating ffmpeg Question
I am using Ubuntu 16, and need to manipulate ffmepg source code , then run ffmepg with those alterations. I have downloaded the source code into a folder from git, and also have installed ffmpeg from ...
- 255
0
votes
1
answer
103
views
Guide me to a dependable subtitling software that also hard-codes subtitles ('hardsubs')
I am in need.
After going through other queries, I believe that avidemux is not as stable as before and has to be 'built'. If not, please guide me as to how I can get the deb version.
My need is ...
- 697
7
votes
3
answers
11k
views
Error With Shared Libraries: FFMPEG
On my fairly old laptop running 16.04, whenever I try to use ffmpeg I get the following error:
$ ffmpeg
ffmpeg: error while loading shared libraries: libcudart.so.5.5: cannot open shared object file: ...
- 151
3
votes
1
answer
4k
views
libavcodec57 causing major dependency problems with ffmpeg
I'm running Ubuntu Server 16.04 with Emby using ffmpeg. Just yesterday, I started getting the below error when running sudo apt-get update/upgrade. I'm somewhat new to Linux, but I've tried a huge ...
0
votes
1
answer
564
views
Process killed by kernel
I'm having my ffmpeg processes killed by the kernel when the system runs out of available memory.
I'd rather the process simply run slower, than get killed. My OSX machine seems to do accomplish this....
- 103
0
votes
0
answers
421
views
How do I record audio and video from Skype and save to a file from my webcam using ffmpeg on 16.04?
I am using Ubuntu 16.04.
I tried the solution here How do I record audio and video to a file from my webcam using ffmpeg?, and It gives me the output as below:
$ ffmpeg -f alsa -i CARD=PCH,DEV=0 -f ...
2
votes
1
answer
325
views
Error compiling guvcview against newest FFmpeg
Under Xenial Xerus I am compiling the release version of guvcview against the latest git FFmpeg. In the latest FFmpeg PIX_FMT_YUV420P has been replaced with AV_PIX_FMT_YUV420P and I suspect this ...
- 38.8k
1
vote
2
answers
2k
views
Converting to ogg via avconv - Unknown encoder 'libtheora' (ubuntu 16.04)
In Ubuntu 16.04 I am trying to convert a video using
"input.avi" -c:v libtheora -qscale:v 6 -c:a libvorbis -qscale:a 5 "out.ogv"
but I get this error:
Unknown encoder 'libtheora'
The were no ...
- 341
2
votes
0
answers
638
views
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 ...
- 21
6
votes
2
answers
6k
views
Why am I getting the error '' when trying to build FFmpeg under Ubuntu Server 16.04
I am trying to build FFmpeg to run under Ubuntu Server 16.04. I am running these commands:
sudo apt-get build-dep ffmpeg
git clone https://github.com/FFmpeg/FFmpeg.git
cd FFmpeg
./configure --...
- 295
1
vote
1
answer
302
views
WinFF: How to produce 'free' ogv files under Xenial?
FFmpeg produces great ogv files under Xenial:
Free codecs: How to use FFmpeg to convert my mp4s to ogv under Xenial?
But I would like to use the gui WinFF to produce these files, and WinFF has no ...
- 38.8k
4
votes
1
answer
1k
views
Free codecs: How to use FFmpeg to convert my mp4s to ogv under Xenial?
I am very attracted to the idea of using completely free codecs. How do I convert my .mp4 files to .ogv using FFmpeg under Xenial Xerus using these free codecs?
I am interested in:
Converting a ...
- 38.8k
0
votes
1
answer
2k
views
ubuntu 16.04 .../ffmpeg error
I want to install ubuntu sdk but when i tried to install with this command
sudo add-apt-repository ppa:ubuntu-sdk-team/ppa && sudo apt update && sudo apt dist-upgrade && sudo ...
1
vote
0
answers
2k
views
Building static ffmpeg libraries on amd64 where libc isn't compiled with -fPIC
First off, I'm not a C/C++ developer so be specific in your solutions and try to be understanding. Secondly, there is a similar question here that does not resolve the issue. Here is my configure line ...
- 523
-1
votes
1
answer
421
views
Why does Ubuntu choose to put the 2.8.6 version of ffmpeg in their repository? [closed]
The official version of ffmpeg is 3.0.1, shouldn't the newest Ubuntu 16.04 LTS choose 3.0.1 or 3.0?
- 1,592