[FFmpeg-user] metadata from concat list not working

[Goran Obal]

Hi everyone,

I apologize for spamming... I just saw that it is in fact working for me
when I do it with pictures, I was just using such examples that the text
was not visible. Sorry.
So, yes, it seems I don't understand what is different when I create video
from a bunch of pictures and when I use filter_complex to create video from
audio files and try to write text over it... I assume that the "picture
way" is then packet and the "audio visualization filter way" is then a
stream.
So I think my question should be: Can I inject metadata to a stream?

Best regards.
Goran


On Mon, Sep 30, 2019 at 10:47 AM Goran Obal <obal.goran at gmail.com> wrote:

> Hi Nicolas,
>
> I am trying to understand what you meant, but unfortunately I don't get it.
> I am still a beginner with video filters of ffmpeg and what I read in the
> documentation for stream metadata and packet metadata didn't help me to see
> what I was confusing.
>
> What I would like to understand is why does it work for the weather
> station (the link in my first email) and why is the same logic accepted
> here:
> https://superuser.com/questions/1336844/is-it-possible-to-burn-a-filename-watermark-in-the-corner-of-a-concatenated-imag as
> an answer.
> When I try to reproduce what the weather station has or what this second
> link describes, I don't get the text in the video. The weather station even
> posted its video and there you can clearly see that the metadata
> from custom-list.txt is displayed on bottom-left of the video
> <https://www.youtube.com/watch?v=nq4ZGtLOw6Q>.
>
> If it worked for them, why doesn't it work when I try to reproduce it?
>
> Best regards.
> Goran
>
>
> On Sun, Sep 29, 2019 at 7:39 PM Nicolas George <george at nsup.org> wrote:
>
>> Goran Obal (12019-09-29):
>> > Somehow this is not working for me and I don't understand why. My video
>> > displays text "blah", which tells me that ffmpeg can't find the
>> metadata...
>>
>> I suspect you are confusing stream metadata and packet metadata.
>>
>> Regards,
>>
>> --
>>   Nicolas George
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>