What's the best way to merge clips?

[alexanderadam]

What would be the best way to merge clips manually until feature 75 is implemented?

Should I use certain ffmpeg parameters to avoid quality loss or so?
Should I keep anything in mind regarding formats?

These examples look plausible but I'm not sure which to choose.

[KyleKun]

Using concat filter is the way to go, it is lossless and it's the way we do it on the app:

1. Create File List
   echo file video1.mp4 > mylist.txt
   echo file video2.mp4 >> mylist.txt
   echo file video3.mp4 >> mylist.txt

2. Run the ffmpeg command
   ffmpeg -f concat -i mylist.txt -c copy DateProperlyParsed.mp4