[FFmpeg-user] help to use -atag

[Stefano Sabatini]

On date Friday 2011-03-18 10:49:20 -0300, rramos at unl.edu.ar encoded:
> Mensaje escrito por:  James Darnley <james.darnley at gmail.com>:
[...]
> Thanks for responding.
> But i need add to a same audio mp3 more info that what medata allows.
> i have to add info in several parts of the audio.
> Can i add info in diferent parts of the audio with -atag ?
> Can you give me a example to the use of -atag for try?
> is there anyway to add metadata for example, author several times in
> the same audio and the mp3 play recognize it? Or how can i do it
> with other option?

What we already told, -metadata is the option. You can specify the
option more than once, e.g.:

ffmpeg -i clasicos.mp3 -ss 00:00:00 -metadata title="Chapter 1" -metadata author="John Doe" -acodec copy -vcodec copy clasicos+tag.mp3

And metadata is a global property of the file/stream, you can't place
it in "several parts of the audio" if I can understand you correctly.

You can check the tags in the output file with ffprobe -show_format FILE.

Note that your commandline is wrong, as you can't have the same file
both as input and output.