[FFmpeg-user] concat demuxer filter_complex (fade)

atticus mail-login+ffmpeg at protonmail.com
Sun Apr 12 02:23:07 EEST 2020


I learned, that it's possible to define multiple inputs and reference then
later in the filter_complex to the different inputs like this:

ffmpeg -i vid1.mkv -i vid2.mkv -i vid3.mkv -filter_complex
"[0:v]fade=t=in:st=0:d=1[v0]; [1:v]fade=t=in:st=0:d=1[v1];
[v0][0:a][v1][1:a][v2][2:a]concat=n=3:v=1:a=1[v][a]" -map "[a]" -map "[v]"

But is this possible with using the concat demuxer (providing the files by
writing them into a file) too? And if yes how?
(Goal is to specify the videos through a file, using the concat demuxer, but
apply the fade filter to each of the video files before concatenating them.
Is it possible to make this in one step?)

With kind regards

Sent from: http://www.ffmpeg-archive.org/

More information about the ffmpeg-user mailing list