# ffmpeg视频转码

手机里转码视频有一点找虐，但很多下载工具，比如youtube-dl等等都是用的ffmpeg。

```
pkg install ffmpeg
```

参数比较多利用参考：

[ffmpeg常用参数](https://bbs.zsxwz.com/thread-2291.htm)

几个常用视频转换命令：

```
# 下载m3u8视频
ffmpeg -allowed_extensions ALL -i xxx.m3u8 -c copy -bsf:a aac_adtstoasc xxx.mp4

# 配合for循环，批量转码
for i in ./*.flv
do
ffmpeg -i $i ${i}.mp4
done

# 视频剪切
ffmpeg -ss 0:0 -t 0:10 -i input.mov output.mp4

# 视频截图
ffmpeg -i input.mov -vf fps=1 -q:v 2 output%03d.png

# 转为mp4格式
ffmpeg -i input.mov output.mp4
```

更多可以参考：

[ffmpeg几个常用视频转换命令](https://bbs.zsxwz.com/thread-2691.htm)


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