I want to learn FFmpeg (1) Compile and install Ubuntu
environment
| environment | value |
|---|---|
| ubuntu | 18.04 |
| ffmpeg | 4.3.2 |
1. Download
The version I prepared is 4.3.2, the latest version is 4.4, the download link or here to view all released versions
2. Unzip
sudo tar -xjf ffmpeg-4.3.2.tar.bz2 -C /opt
3. Install dependent libraries
3.1，yasm
Installation reason: use assembly to improve efficiency, I don’t understand it very well, I will add it when I understand it
Method 1: Install via apt
sudo apt-get install yasm
Method 2: Download the source code and install it. download link
After method 1 was installed, it was found to be the latest version, so I did not use method 2 anymore.
3.2， SDL
Reason for installation: ffplay player depends on SDL. If it is not installed, ffplay will not be generated after compilation and installation, and it is not necessary to install it.
Method 1: Install via apt
sudo apt-get install libsdl2-2.0
sudo apt-get install libsdl2-dev
Method 2: Download the source code to compile and install. download link
sudo tar -zxvf SDL2-2.0.14.tar.gz -C /opt
sudo ./configure
sudo make
sudo make install
I have tried both ways and it works.
4. Run the configuration file
./configure
5. Compile
Depending on the machine configuration, compilation time may be longer
make -j8
6. Install
Remember to add sudo
sudo make install
7. Check version
ffmpeg -version
ffmpeg version 4.3.2 Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
configuration:
libavutil 56. 51.100 / 56. 51.100
libavcodec 58. 91.100 / 58. 91.100
libavformat 58. 45.100 / 58. 45.100
libavdevice 58. 10.100 / 58. 10.100
libavfilter 7. 85.100 / 7. 85.100
libswscale 5. 7.100 / 5. 7.100
libswresample 3. 7.100 / 3. 7.100
Question 1
Execute ffplay and report an error
ffplay version 4.3.2 Copyright (c) 2003-2021 the FFmpeg developers
built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
configuration:
libavutil 56. 51.100 / 56. 51.100
libavcodec 58. 91.100 / 58. 91.100
libavformat 58. 45.100 / 58. 45.100
libavdevice 58. 10.100 / 58. 10.100
libavfilter 7. 85.100 / 7. 85.100
libswscale 5. 7.100 / 5. 7.100
libswresample 3. 7.100 / 3. 7.100
X Error of failed request: BadValue (integer parameter out of range for operation)
Major opcode of failed request: 151 (GLX)
Minor opcode of failed request: 3 (X_GLXCreateContext)
Value in failed request: 0x0
Serial number of failed request: 84
Current serial number in output stream: 85
After searching for a long time, I had no clue, and finally found it on stackoverflow.
btw, this specific error (GLX:24 X_GLXCreateNewContext) error will happens when your video driver is updated for a running X server, restart X to resolve it – ThorSummoner Sep 21 '20 at 20:05
Solution: Restart, no surprises! ! !
The problem is that I installed the navida driver update in the morning, and it has not restarted yet.
Question 2:
ffplay test.wav reports an error:
SDL_OpenAudio (2 channels, 44100 Hz): No such audio device
SDL_OpenAudio (1 channels, 44100 Hz): No such audio device
No more combinations to try, audio open failed
Failed to open file 'test.wav' or configure filtergraph
Solution: This is really a detour around the 18th bend of the mountain road, but I can't find a solution. Finally, I keep trying. The solution steps are as follows:
1. Install libasound2-dev
This is seen in this blog , is it because of this, not sure, friends who see it, you can skip it and try it directly from 2
sudo apt-get install libasound2-dev
2. Uninstall SDL2, recompile and install.
3. Recompile ffmpeg.