[FFmpeg-user] How to properly pasting same-size video parts together into one output?

[LuKaRo]

There is lots of information regarding this topic in the ffmpeg wiki: 
https://trac.ffmpeg.org/wiki/Concatenate You can use the concatenate 
filter if you want to concatenate video files with different formats and 
re-encode them in one step. This may also solve issues with other 
concatenation methods.

Regards,

LuKaRo