An unlabeled input will be connected to the first unused input stream of the matching type. If streamspecifier matches multiple streams, the first one will be used. Input link labels must refer to input streams using the fileindex:streamspecifier syntax (i.e. I tried concatenating them with ncat() which is the only method I found to make one stream from two but I think it is non-sense (and it doesn't work anyway). filtergraph is a description of the filtergraph, as described in the Filtergraph syntax section of the ffmpeg-filters manual.

However, I can't find how to use it through the multi-input command paletteuse, as filters only take one stream as an input in ffmpeg-python. I checked, the palette generates well if I output it as a png. #stream = ffmpeg.filter(stream, palette, 'paletteuse') ? Palette = ffmpeg.filter(in_stream, 'palettegen') Stream = ffmpeg.filter(scale_input, 'scale', output_width, output_height, 'lanczos') Stream = ffmpeg.filter(in_stream, 'fps', fps) So far, this is what I've got: in_stream = ffmpeg.input(src, ss=start_time, t=(stop_time-start_time)) I want to mimic the following ffmpeg command with ffmpeg-pythonįfmpeg -y -i in.mp4 -t 30 -filter_complex 'fps=10,scale=-1:-1:flags=lanczos palettegen paletteuse' out.gif

Ffmpeg filter streams at input