u/Bob_New_Orleans

Windows user. I looked up two different ways to strip the video from an mp4. These two commands seem to do exactly the same thing.

ffmpeg -i input.mp4 -map 0:a -c:a copy output.mp4
ffmpeg -i input.mp4 -vn -c:a copy output2.mp4

The output files are the same size and comp indicates they match. But the -vn command runs WAY faster. Can someone in the know explain if it is preferable for that reason or is there something else to consider?

Thanks!

How do I create an image of my Windows 11 laptop to save externally?  My C: drive has used 410Gb.  Will the image size be about the same? 

How would I restore it to a different laptop if mine dies?