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

[Paul B Mahol]

On Sun, Feb 7, 2021 at 11:19 AM Paul B Mahol <onemda at gmail.com> wrote:

>
>
> On Sun, Feb 7, 2021 at 12:59 AM MediaMouth <communque at gmail.com> wrote:
>
>> On Feb 6, 2021, at 3:32 PM, Paul B Mahol <onemda at gmail.com> wrote:
>> >
>> > Can you share file?
>> Yes.  The O.P. made it available here: https://ufile.io/bgunj34e <
>> https://ufile.io/bgunj34e>
>>
>> >
>> > ffmpeg -i INPUT.png -i AUDIO.flac -map:v 0 -metadata comment=Other
>> > -disposition:v:0 attached_pic -map:a 1 -metadata album=test FINAL.flac
>> >
>> > Note that metadata order is important. The command above adds comment
>> > metadata to video stream.
>>
>> Thanks for posting.  Clear and helpful.  Unfortunately, I got an error
>> Here are the steps I did...
>>
>
> Your steps are all invalid. Why you put first audio then video?
> My command only works with first video stream and after that audio stream.
> In ffmpeg every item position matters.
>

Also you can not remove description of attached picture at all. "Other" is
just default value if no other valid values are set.
You can change value to "Cover (front)" if you like, please read 4.14
section of https://id3.org/id3v2.4.0-frames

So command to change Other to Cover is:
ffmpeg -i INPUT.flac -c:v png -disposition:v:1 attached_pic -metadata:s:v:0
comment="Cover (front)" OUTPUT.flac



>
>
>> ffmpeg -i '29 My Girl.flac' -an -vcodec copy '29 My Girl.png'; #Extract
>> the album art to an external file.
>> ffmpeg -i '29 My Girl.flac' -map 0 -map -0:v:0 -c copy '29 My
>> Girl-NoArt.flac'; #Remove the album art, save results to a new .flac file.
>> ffmpeg -i '29 My Girl-NoArt.flac' -i '29 My Girl.png' -map:v 0 -metadata
>> comment=SomethingOtherThanOther -disposition:v:0 attached_pic -map:a 1
>> -metadata comment= '29 My Girl-ReArt.flac'; #Add the album art back using
>> the metadata commands as you suggest, and store to yet another .flac file.
>> Error received:  [swscaler @ 0x7f9648038000] deprecated pixel format
>> used, make sure you did set range correctly
>>
>>
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>
>