[FFmpeg-user] Removing a metadata tag from a specfic stream

[Thibeau]

I indeed figured out how to extract the cover art than remove it from the song.

I already know how to place it back too. The problem is I don’t know what the metadata comment tag is. 
I can’t find it on the image after extracting with exiftools or any other tool for that matter. If I reattach the cover afterwards with ffmpeg, the metadata tag is still there.
I guess it must be stored somewhere, but I have no idea how to acces or change 

P.S the commands I used to split/extract/... just came from stackoverflow answers, happy to send to commands here if you need them.

> On 6 Feb 2021, at 16:27, MediaMouth <communque at gmail.com> wrote:
> 
> 
>> 
>> On Feb 6, 2021, at 3:12 AM, Thibeau <vercruyssen.thibeau at gmail.com> wrote:
>> 
>> Interestingly I can split the cover art out using ffmpeg. But even after that the metadata on the image itself I can’t seem to find a way to edit it. Tried exiftools and everything. So might just be a weird tag value
> 
> 
> 
> Thibeau, you may have already figured his much out...
> 
> This extracts the art:
>> ffmpeg -i '29 My Girl.flac' -an -vcodec copy '29 My Girl.png'
> 
> This removes the art along with the associated metadata (comment=other)
>> ffmpeg -i '29 My Girl.flac' -map 0 -map -0:v:0 -c copy '29 My Girl-NoArt.flac'
> 
> I'd be interested to know how to put the art back and if it's possible maybe assign metadata to that before or during that process.
> If I'm understanding Paul, you can't edit the metadata on the art "stream" after the fact.
> 
> 
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