View Single Post
  #18  
Old July 12th 18, 01:11 AM posted to alt.windows7.general,microsoft.public.windowsxp.general,microsoft.public.win98.gen_discussion,uk.tech.broadcast
J. P. Gilliver (John)[_2_]
external usenet poster
 
Posts: 54
Default Does .mp4 - or any other video format - have a text field (comment, not subtitle)? If so, what can edit it?

In message , VanguardLH
writes:
Cross-posted to 4 newsgroups. Many netizens consider that excessive.
How is a broadcast newsgroup related to metadata in files?

You are right, it was a bit excessive (though the '98 group is very
quiet these days). The UTB 'group contains many who are knowledgeable
about many things, including video formats. But yes, you are right.

J. P. Gilliver (John) wrote:

[]
https://www.mp3tag.de/en/#formats

Says it edits metadata in files, and lists .mp4 as a supported format.
It's free, so you could try it without cost.


Thanks, I may do so.

https://videoconverter.wondershare.c...a-for-mp4.html

That has a pic at step 2 showing what metadata fields can be edited for
an MP4 video.


Someone (I think Mayayana) has already produced chapter and verse on all
the metadata fields. Someone else - I think it was Frank Slootweg -
pointed out that VLC had a Comment field that could be edited, in a way
so obvious that I hadn't spotted it; he also pointed out that .mp4 isn't
anywhere near the whole story, and such a file may contain a variety of
different things. Which I subsequently verified - some .mp4 files
_could_ have something edited into the Comment field using VLC, and some
couldn't (though in all cases no error or other indication was evident -
just closing VLC and then reopening it on the files sometimes showed the
comment had stuck and sometimes didn't).

Even if a graphics file format does not support metadata or comments,
you could use steganography to encode your comments into the graphics
file. Probably a lot more work than you care to perform, especially
since you did not indicate the comments are secret.

https://null-byte.wonderhowto.com/ho...y-hide-secret-
data-inside-image-audio-file-seconds-0180936/


(-:! No, nothing secret: just simple notes like "This was the first time
they performed this programme, 1981 Richmond" (figure skating), or
perhaps notes on who the composer and lyricist are/were (and maybe the
lyrics) for a music video.
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

You cannot simply assume someone is honest just because they are not an MP.