Do you know VREW? it is create subtitles automatically if you put your video

I introduce so amazing tool, VREW.
It create subtitles automatically with your video file.

is it working offline ? and anyone know how to translate an SRT file?

Yes it works offline see:

To translate an SRT file: open it in a text editor and copy-paste chunks into Google Translate. Then copy-paste the translated chunks into a new SRT file.