[Libav-user] Recomended approach for a timed metadata track within an mp4 (ISOBMFF section 12.3.3.2)

[Brad Hards]

On Thursday, 31 March 2022 9:15:42 PM AEDT Tom Vercauteren wrote:
> I am interested in embeding metadata corresponding to each video frame
> within an mp4 file. I am however a bit unsure how to best approach this
> with ffmpeg / libav. I tried looking for exisiting tutorials / guidelines
> but couldn't find it so far and would thus appreciate further pointers.

It might depend on what you are trying to achieve. One thing you might like to 
look at is the MISB ST 1910.1 approach, which uses an EMSG box. 

Its not clear to me how well that is supported within ffmpeg - it'll probably 
require some additional code.

Brad