[Libav-user] Is video orientation supported in3gp/mp4 in FFmpeg/libav?

[Carl Eugen Hoyos]

Yisheng Zhao <yz1134 at ...> writes:

> I have a question if video orientation is supported in3gp/mp4 
> in FFmpeg/libav?
> 
> a "3gvo" box is used to specify the video orientation~

Please provide a sample.

Carl Eugen