OK, thanks to everyone who answered. I couldn't figure it out any other way, so I am just sending you my solution in case anyone is interested.
Step 1 (use for loop to create videos (mkv) from all audio files - in my case wav, change that to what you need): for %i in (*wav) do ffmpeg -i %i -filter_complex "[0:a]showfreqs=cmode=separate:colors=cyan|orange,drawtext=text='%~ni':font=verdana:fontsize=56:fontcolor=white:x=(main_w/2-text_w/2):y=20[outv]" -map [outv] -map 0:a -c:v h264_nvenc -c:a copy -pix_fmt yuv420p -shortest %~ni.mkv Step 2 (use for loop to create a list of all created videos): for %i in (*mkv) do echo file '%i'>>video.txt Step 3 (concatenate all videos into one): ffmpeg -f concat -safe 0 -i video.txt -c copy finale.mkv If anyone has any more suggestions how to bring this into one step, that would be awesome, if not, this is how to do it if you need/want it. Kind regards. Goran On Mon, Sep 30, 2019 at 11:44 AM Paul B Mahol <[email protected]> wrote: > On 9/30/19, Goran Obal <[email protected]> wrote: > > 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? > > Yes with ametadata and metadata filters, read their documentation. > Note that drawtext filter command you used use only frame metadata, > and frame metadata > can be added/removed/changed by mentioned filters above. > The concat demuxer can not set/remove/change frame metadata. > Also frame metadata is per each frame and can obviously disappear and > appear at any time. > AFAIK there is no way for filters to know stream metadata, so your > approach to draw text is wrong. > > Stream metadata is static per stream and never changes. > Frame metadata can be available in each filtered frame. > > > > > Best regards. > > Goran > > > > > > On Mon, Sep 30, 2019 at 10:47 AM Goran Obal <[email protected]> > 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 <[email protected]> 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 > >>> _______________________________________________ > >>> ffmpeg-user mailing list > >>> [email protected] > >>> https://ffmpeg.org/mailman/listinfo/ffmpeg-user > >>> > >>> To unsubscribe, visit link above, or email > >>> [email protected] with subject "unsubscribe". > >> > >> > > _______________________________________________ > > ffmpeg-user mailing list > > [email protected] > > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > To unsubscribe, visit link above, or email > > [email protected] with subject "unsubscribe". > _______________________________________________ > ffmpeg-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
