When recording continuously on older camcorders they may split your video into separate files like the Sony HDR-CX130E does. Now when you just grab your files like 00123.MTS, 00124.MTS etc. and import them into your video editing tool you will notice a small audio gap.
This little script for Windows will put the splitted files back together.
The script assumes that your files are splitted by 1.97GB
. If your camera splits by ~ 4GB
you have to change the script and set that variable split_size
accordingly.