ffmpeg ios代码加字幕相关

ios上调用ffmpeg命令的配置方式可以参考：
http://blog.csdn.net/leixiaohua1020/article/details/47072673

No such filter: 'subtitles'
Error opening filters!

以及No such filter: 'ass'

Error opening filters!

应该是缺libass静态库，编译ffmpeg时候--enable-libass，但是不知道srt的该咋办

2 down vote accepted

The problem The subtitles filter requires libass as a dependency, but your build is missing --enable-libass . Solution You will have to compile ffmpeg with libass support, or download a build from the FFmpeg Download page (under the "Linux Static Builds" section).

这个地方说subtitles这个filter是以libass作为基础的，那看来编译上libass应该就可以了

有的地方给的答案：

Solution:

1. Right click "1.srt" and Open With "Notepad".

2. File > Save as... :

-File name: 1.srt

-Save as type: All Files

-Encoding: UTF-8

> Save.