实战
转码: ffmpeg -i a.mp4 b.avi (将a.mp4 转码为b.avi)
当视频不含声音时: ffmpeg -i a.mp4 -vcodec copy -an a.avi
截取视频: ffmpeg -i a.mp4 -ss 5 -t 10 b.avi (从第5秒开始，截取10秒视频)
将图片序列合成视频
ffmpeg -f image2 -i image%d.jpg video.avi
上面的命令会把当前目录下的图片（名字如：image1.jpg. image2.jpg. 等…）合并成video.avi
将视频分解成图片序列
ffmpeg -i video.avi image%d.jpg
上面的命令会生成image1.jpg. image2.jpg. …
ffmpeg -i video.avi -vframes 100 picture/people%5d.png
上面的命令会在picture 目录下生成people00001.png, people00002.png …peopel00100.png
查看视频信息
ffmpeg -i a.avi
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ‘a.mp4’:
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isom
Duration: 01:00:08.98, start: 0.000000, bitrate: 4133 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420
p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 4089 kb/s, 24.96 fps, 25
tbr, 90k tbn, 50 tbc (default)
Stream #0:1(und): Audio: none (wxh1 / 0x31687877), 8000 Hz, 1 ch
annels, 40 kb/s (default)
ffprobe -i a.avi
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ‘../video3.mp4’:
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isom
Duration: 01:00:08.98, start: 0.000000, bitrate: 4133 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420
p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 4089 kb/s, 24.96 fps, 25
tbr, 90k tbn, 50 tbc (default)
Stream #0:1(und): Audio: none (wxh1 / 0x31687877), 8000 Hz, 1 ch
annels, 40 kb/s (default)
在Ubuntu/Debian/Fedora系统上安装FFmpeg 2.6.3：http://www.linuxdiyf.com/linux/12251.html
Ubuntu Server 13.10安装(ProFTP、Tomcat6、FFMpeg)：http://www.linuxdiyf.com/linux/10859.html
玩转FFmpeg的7个小技巧：http://www.linuxdiyf.com/linux/6894.html
Ubuntu 14.04/14.10用户如何安装FFmpeg 2.5.1：http://www.linuxdiyf.com/linux/6471.html
在Ubuntu下编译FFmpeg：http://www.linuxdiyf.com/linux/4827.html