FFMPEG method (Concatenation of files with same codecs)
The concat demuxer was added to ffmpeg 1.1. You can read about it in the [documentation].
Create a file "Cam01.txt" with all the (files relative or absolute paths) you want to have concatenated in the following form ( Lines starting with a dash are ignored ):
# this is a comment
Note that these can be either relative or absolute paths. Then you can encode your files with:
ffmpeg -f concat -i Cam01.txt -c copy Cam01.mp4