# Concating file A with A, first A is silent

**URL:** <https://community.mp3tag.de/t/concating-file-a-with-a-first-a-is-silent/63638>\
**Category:** Off-Topic\
**Created:** [February 1, 2024, 1:39am UTC](https://community.mp3tag.de/t/concating-file-a-with-a-first-a-is-silent/63638 "2024-02-01T01:39:20Z")\
**Posts on this page:** 1\
**Showing post:** 16

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**Author:** ![LyricsLover](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/l/c6cbf5/32.png) [@LyricsLover](https://community.mp3tag.de/u/LyricsLover)\
**Post date:** [February 1, 2024, 3:25pm UTC](https://community.mp3tag.de/t/concating-file-a-with-a-first-a-is-silent/63638/16 "2024-02-01T15:25:42Z")

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BTW:

If I try it with:  
`ffmpeg -i "concat:dormi.mp3|4sec.mp3|dormi.mp3" -acodec copy dormi4secdormi_created-with-ffmpeg.mp3`

I get this file (remove the additional `.txt` before playing)  
[dormi4secdormi\_created-with-ffmpeg.mp3.txt](https://community.mp3tag.de/uploads/short-url/cnj32juQGOeUhJBPKJSTl0iyqdv.txt) (67,3 KB)

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