[FFmpeg-user] filter ffmetadata does not output all metadata and is missing in documentation

[Ulf Zibis]

Hi,

with
ffmpeg -i input.mp4 -f ffmetadata input.meta
I get only:
;FFMETADATA1
major_brand=mp42
minor_version=0
compatible_brands=isommp42
com.android.version=8.0.0
location=-00.7655-047.1715/
location-eng=-00.7655-047.1715/
encoder=Lavf58.38.100

So I'm missing "creation_time".
ffprobe lists:
creation_time   : 2020-02-05T19:55:01.000000Z
(With mediainfo there are 2 dates with same content, they are called
"Encoded date" and "Tagged date")

Additionally, "ffmetadata" is missing in filters documentation.

-Ulf