I use another language "python" to replace "sh" to play video now. It successes.

Here is my example:

#+begin_src org
,* 《枕刀歌》
:PROPERTIES:
:DATE:     [2021-05-13 Thu 20:09]
:Douban:   https://movie.douban.com/subject/35350794/
:DIR:      枕刀歌
:EVAL:     src_python{import os; video_file = "枕刀歌/《枕刀歌》SE05 江海阔 歌谣哼唱.mp4"; os.system("mpv \"%s\" " %(video_file))} 
:END:

#+end_src

It's not as convenient as shell command directly but at least it works.
Seems the sh inline source block can't be used to play video using "mpv"
(I also tested other video player commands like "mplayer", "iina" etc).

So this python solution is a workaround.

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[ stardiviner ]
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