FFMPEG VIDEO TRANSCODING COMMAND INTRODUCTION

1. FFMPEG source code download

   Download link

2. Install FFMPEG under Linux

   tar -xjvf ffmpeg-4.1.3.tar.bz2
   
   cd ffmpeg-4.1.3
   
   ./configure --enable-shared --prefix=/usr/local/
   
   make
   
   make install
   
   export PATH=\$PATH:/usr/local/bin
   

   --prefix=/usr/local is the installation path, which can be set by yourself, run ffmpeg in the terminal.

   Use –version to check whether the installation is successful.

3. Transcoding command

   1. Convert H.264 encoded video to without B frame

      ffmpeg -i input.mp4 -c:v libx264 -x264-params "bframes=0:ref=1" -strict -2

      output.mp4

   2. Convert H.265 encoded video to without B frame

      ffmpeg -i input.mp4 -c:v libx265 -x265-params "bframes=0:ref=1" -strict -2

      output.mp4