实现上传视频获取视频的第一帧当做视频封面
1、安装ffmpeg
ffmpeg的下载链接 https://ffmpeg.org/download.html
解压安装包
tar -jxvf ffmpeg-4.0.tar.bz2
进入目录
cd ffmpeg-4.0
编译安装
./configure --enable-shared && make && make install
安装完成之后 执行 ffmpeg
如果能够出现类似下列信息，说明ffmpeg安装成功。
ffmpeg version 4.0 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-18)
configuration: --enable-shared
libavutil 56. 14.100 / 56. 14.100
libavcodec 58. 18.100 / 58. 18.100
libavformat 58. 12.100 / 58. 12.100
libavdevice 58. 3.100 / 58. 3.100
libavfilter 7. 16.100 / 7. 16.100
libswscale 5. 1.100 / 5. 1.100
libswresample 3. 1.100 / 3. 1.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
Use -h to get full help or, even better, run 'man ffmpeg'
如果出现：
ffmpeg: error while loading shared libraries: libavdevice.so.52: cannot open shared object file: No such file or directory
编辑这个文件 vim /etc/ld.so.conf
加上
include ld.so.conf.d/*.conf
/usr/local/ffmpeg-4.0
执行ldconfig
再次输入 ffmpeg
以上就是我遇到的问题 并解决