[FFmpeg-user] Inquiry about VP8 and rotation tag

[linecorp baek]

Hi guys,

I'm looking for how to use a rotation tag for VP8 codec.
(A rotation tag means a value of a video frame rotated some direction.)

As you know, generally VP8 is combined with WebM container, that container
can't put a rotation tag in the format officially. (Please let me know if
it's wrong information.)

So, I think about if mp4 container possibly contains VP8 codec, a rotation
tag could be embedded.

https://www.webmproject.org/vp9/mp4/#
I found this link, I think this article seems to describe the ISO BMFF
format can be applied for VP codecs.

What I want to ask is, is it possible to use mp4 format for VP codecs?
and is FFmpeg support mp4 containing for VP?

Sorry for poor English skill ^^;

Thanks for reading this!
Seunghoon, Baek