[FFmpeg-user] Help with metadata writing (mp4)... what's possible?

Gyan Doshi gyandoshi at gmail.com
Fri Dec 7 08:06:26 EET 2018

On 07-12-2018 03:09 AM, Karen Norton wrote:

> I thought I would provide an update to this.
> Everything worked great adding the custom metadata and it shows up fine in
> ffprobe however all of the metadata stopped displaying in mediainfo, vlc,
> etc. I expected the custom tags not to show but I'm a bit perplexed as to
> why the existing tags ("title", etc.) stopped displaying. It's as if the
> metadata was never added even though ffprobe displays it fine. Very weird
> and a setback. It looks like I can't use custom tags after all.

Ok, so it looks like the muxer writes the tags in a non-standard manner 
i.e. as a child of the udta atom rather than at the top-level. I'' check 
into this when I can.


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