0x1 and CTF

Video to MP3

This command extracts the audio from a video file and puts it in a MP3 file. Ffmpeg automatically works out the right codecs to use from the output file extention, in this case it's MP3.

ffmpeg -i VIDEOFILE OUTPUTFILE.mp3

If you wish to do the same with ann OGG file, you have to specificy that you want audio only, you can do this with the -vn argument.

ffmpeg -i VIDEOFILE -vn OUTPUTFILE.ogg

Strip JPEG metadata

For this command, you'll require a program called exiftool.

On Ubuntu-based distros: sudo apt install libimage-exiftool-perl
On Arch-based distros: sudo pacman -S perl-image-exiftool

Then use the following command to strip the metadata. INPUTFILE can include *.* or *.jpg as well as a specified file. The original, unmodified files will be renamed and not overwritten.

exiftool -all= INPUTFILE