Sound gap on stitching together splitted AVCHD files

[brian]

@CinemaFoto

Maybe somebody knows Linux alternative to ‘File Joiner’ program?

Linking to this thread because it is related. But it does not really answer your question since it still suggests Windows tools:

Putting two .mts files together

Also, since .mts is MPEG-2 Transport Stream, you can simply use another tool that joins or concatenates files. How you do that depends on your operating system. You’ll need to search. If you are on Windows, you should avoid something for text files or something specific to certain formats. A binary join/concatenation should work just fine.

@CinemaFoto

Using ffmpeg ‘concat’ option somehow reencodes original PCM sound to MP2 (mpga) 384kbps, even if I define ‘copy’ in audio codec CLI string

What if you define the codec to be some other lossless audio format? Converting from PCM to lossless audio should not be a problem.