Join files - concatenated without audio

[SWISH]

i dont know why , but after joining some 13 collections of stories instagram, the 9,10,11,12 and 13 module collection are without audio '-'

[SWISH]

I DISCOVER THE PROBLEM!!

if the first file to join its muted/without audio, the another videos files to join become muted too!

Please Sir, can u add a feature to fix/prevent this??

[Abel]

Hi, I'm afraid I don't know how to fix this, it is something not related to this application but to ffmpeg behaviour when first file in a concatenation list has no audio stream. I've tried concat and demuxer filters, mapped audio stream, but with no success.

[SWISH]

Hi @eibol , Don't worry, I already decided to delete the first file without audio, it worked well for now, I searched and heard that silence would solve, but I don't know how to apply this filter ...