Qt and ffmpeg in Linux

Mikeeeeee

Hi!
I put Debian 10, it already has ffmpeg.
Please tell me how to connect ffmpeg to the Qt project.
Here's what the terminal gives you about the library

dpkg -L ffmpeg
/.
/usr
/usr/bin
/usr/bin/ffmpeg
/usr/bin/ffplay
/usr/bin/ffprobe
/usr/bin/qt-faststart
/usr/share
/usr/share/doc
/usr/share/doc/ffmpeg
/usr/share/doc/ffmpeg/RELEASE_NOTES
/usr/share/doc/ffmpeg/changelog.Debian.gz
/usr/share/doc/ffmpeg/changelog.gz
/usr/share/doc/ffmpeg/copyright
/usr/share/ffmpeg
/usr/share/ffmpeg/ffprobe.xsd
/usr/share/ffmpeg/libvpx-1080p.ffpreset
/usr/share/ffmpeg/libvpx-1080p50_60.ffpreset
/usr/share/ffmpeg/libvpx-360p.ffpreset
/usr/share/ffmpeg/libvpx-720p.ffpreset
/usr/share/ffmpeg/libvpx-720p50_60.ffpreset
/usr/share/lintian
/usr/share/lintian/overrides
/usr/share/lintian/overrides/ffmpeg
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/ffmpeg-all.1.gz
/usr/share/man/man1/ffmpeg-bitstream-filters.1.gz
/usr/share/man/man1/ffmpeg-codecs.1.gz
/usr/share/man/man1/ffmpeg-devices.1.gz
/usr/share/man/man1/ffmpeg-filters.1.gz
/usr/share/man/man1/ffmpeg-formats.1.gz
/usr/share/man/man1/ffmpeg-protocols.1.gz
/usr/share/man/man1/ffmpeg-resampler.1.gz
/usr/share/man/man1/ffmpeg-scaler.1.gz
/usr/share/man/man1/ffmpeg-utils.1.gz
/usr/share/man/man1/ffmpeg.1.gz
/usr/share/man/man1/ffplay-all.1.gz
/usr/share/man/man1/ffplay.1.gz
/usr/share/man/man1/ffprobe-all.1.gz
/usr/share/man/man1/ffprobe.1.gz
/usr/share/man/man1/qt-faststart.1.gz

mrjj

Hi
In what way "connect" ?

This is just the executable and seems to have no libs to link to your app.

You can run it with QProcess if you wish.

Please give more details on what you try to do.

https://www.salatino.org/wp/using-ffmpeg-in-c-with-qt-creator/

Mikeeeeee

I want to process images and sound, and work with videos. I looked at an example. But I haven't:

#include <libavutil/opt.h>
#include <libavcodec/avcodec.h>

jsulm

@Mikeeeeee said in Qt and ffmpeg in Linux:

But I haven't

I guess you did not install the ffmpeg dev packages?

mrjj

@Mikeeeeee
Hi
So you want to link it toyour own app ?

I think you need to do
sudo apt-get install libavcodec-dev
or similar to get the headers.

Mikeeeeee

This post is deleted!

Mikeeeeee

This post is deleted!

Mikeeeeee

I install the library installed:

sudo apt-get install libavcodec-dev
apt-get install libavformat-dev
apt-get install libswscale-dev

and in .pro:


INCLUDEPATH += /usr/include/x86_64-linux-gnu/libavcodec

LIBS += -lavformat  -lavcodec -lavutil -lz  -lswscale -lavutil -lm -llzma -lswresample

and now work