cmd+shift+5 is incredible for screen recording!
Splitting a screen recording without resampling the video is easy with quicktime – Edit/Trim
the first part and save, then reopen the original recording, Edit/Trim
the second part and save. These save super-fast, a testament to simply being copied rather than resampled.
But what if I'd like to merge (concatenate) two screen recordings without resampling?
Using quicktime's Edit/Add Clip to End
seems to force a resampling and takes 10x longer to save. Is there a way around it?
Best Answer
There is a command line tool called ffmpeg, which can be installed with any package manager such as brew or macports.
You can use
concat
option of ffmpeg like this:Contents of listofvideos.txt:
-c copy
makes sure the codec is copied and nothing is resampled. More info about concat can be found here