[FFmpeg-user] id3 tags not really removed?

[Rodolfo Medina]

Ron Sparks <sanitychallngd at gmail.com> writes:

> On 05/29/2017 06:03 PM, Rodolfo Medina wrote:
>> Rodolfo Medina <rodolfo.medina at gmail.com> writes:
>>
>>> Rodolfo Medina <rodolfo.medina at gmail.com> writes:
>>>
>>>> Gyan <gyandoshi at gmail.com> writes:
>>>>
>>>>> Unless specified otherwise, ffmpeg will transcode streams. You have to
>>>>> add
>>>>>
>>>>> -c copy
>>>>>
>>>>>   to force stream copy (if the output format supports it). So,
>>>>>
>>>>> $ ffmpeg -i input.mp3 -c copy -metadata artist="Caterina Pontrandolfo
>>>>> Quartett" -metadata album="concerto di Fonte Avellana" -metadata
>>>>> genre="popular" -metadata composer="tradizione lucana" output.mp3
>>>>
>>>>
>>>> Great.  Many thanks.
>>>
>>> It works fine...  But now I want to modify, to change some of those id3
>>> tags.  Apparently, it is done with simply giving the above command once
>>> again, with values changed at my pleasure: when afterwards I run `ffmpeg
>>> -i' on the file, everything is fine and the values have changed as desired.
>>> But when I read the file using the mp3 reader which is in my car, the old
>>> tags are still there...!  They have not changed at all!  How comes, and how
>>> to solve it?
>>>
>>> Thanks for any help,
>>>
>>> Rodolfo
>>
>>
>> ... I also tried to remove all the tags with:
>>
>>   $ ffmpeg -i input.mp3 -map 0:a -map_metadata -1 -c copy out.mp3
>>
>> and then put them again, but the problem remains...
>>
>> Rodolfo
>
> I suspect the problem might be that ffmpeg works with the id3v2 tags, while
> your mp3 reader works with the id3v1 tags.
> Ron Sparks


Thanks...  My reader reads fine the tags created by ffmpeg...  But when they
are changed by ffmpeg itself, my reader still sees the old ones...

Rodolfo