Shulou(Shulou.com)06/02 Report--

When pushing with the following command:

ffmpeg -re -i a.mp4 -vcodec libx264 -acodec aac -f flv rtmp://172.31.102.165:1935/myapp

The following errors may occur:

Unknown encoder 'libx264'

That is, the libx264 library is missing and needs to be installed:

git clone git://git.videolan.org/x264.git

cd x264

./ configure --enable-static --enable-share --disable-asm

make

sudo make install

Need to recompile installation ffmpeg

When configuring ffmpeg, add x264, such as:

./ configure --enable-gpl --enable-libx264

make clean

make

make install

In this case, when entering ffmpeg, an error may appear:

ffmpeg: error while loading shared libraries: libavdevice.so.57: cannot open shared object file: No such file or directory

Modify ld.so.conf file

$ sudo vi /etc/ld.so.conf

modified as follows

include ld.so.conf.d/*.conf

/usr/local/ffmpeg/lib ///usr/local/ffmpeg directory is my ffmpeg installation directory, change it according to your installation directory

bring into force

$ sudo ldconfig

Add environmental variables for Ffmpeg

vi /etc/profile

Add the following:

export PATH="/usr/local/ffmpeg/bin:$PATH"

Then save and run source /etc/profile

If libx264 is also missing, you need to go to the compiled ffmpeg directory and push it with the following command:

./ ffmpeg -re -i a.mp4 -vcodec libx264 -acodec aac -f flv rtmp://172.31.102.165:1935/myapp

###222222

I. Analysis of the cause of the problem

Download xlib264 library

Download x264 Library

git clone git://git.videolan.org/x264.git

Go to the library directory

cd x264

Configuration x264

./ configure --enable-shared --enable-static --disable-asm

compilation execution

make && sudo make install

Third, recompile and install ffmpeg

Need to recompile installation ffmpeg

Download ffmpeg:

Download Method 1:

wget https://ffmpeg.org/releases/ffmpeg-4.1.tar.bz2

Unzip: tar jxvf ffmpeg-4.1.tar.bz2

cd ffmpeg-4.1

Download method 2 (this way with git download speed is a bit slow):

git clone https://git.ffmpeg.org/ffmpeg.git ffmpeg

Configure ffmpeg

./ configure --enable-gpl --enable-libx264

compilation execution

sudo make clean && make && sudo make install

IV. Modify the configuration file

Add the line/etc/ld. so.conf to the/etc/ld.so.conf file, using root of course. Then execute the ldconfig command to make the changes just take effect, and then run ffmpeg transcoding command to try, you can it.

####################33333333333333333333333

When installing ffmpeg, execute

./ configure--enable-libx264 --enable-gpl --disable-yasm --prefix=/usr/local/ffmpeg

make

No mistakes.

But when pushing to the rtmp server

./ ffmpeg -re -i /media/jxs2.rmvb -vcodec libx264 -f flv"rtmp://192.168.5.200:1935/live/a2"

following error occurred

./ ffmpeg: error while loading shared libraries: libx264.so.138: cannot open shared object file: No such file or directory

Solution:

View ld.so.conf file

vi /etc/ld.so.conf

Add/usr/local/x264/lib as follows

include ld.so.conf.d/*.conf

/usr/local/x264/lib

wq exit ld.so.conf file

Execution? ldconfig

Push flow again, problem solved

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