I want to take a folder of mp4s and with ffmpeg compress them and turn them into gifs.
I do this for each file using this code:
ffmpeg -i input.mp4 -c:v libx264 -tune zerolatency -preset ultrafast -crf 40 -c:a aac -b:a 32k output.mp4
-crf can go to 63 and I can adjust how compressed the result file will be.
But how do I run that code for a whole folder of mp4s and get all of them compressed and turned into gifs?
So I am reading all possible problems on this board and have found making a .bat file with this code and then running it in command prompt:
for %F in (*.mp4) do (If not Exist "%~nF" MkDir "%~nF" ffmpeg -i %F -r 1 -qscale:v 2 %~nF\%~nF-%3d.jpg)
does close to what I need (except this is for breaking down multiple mp4s into jpgs).
This code changes multiple mp4s into gifs I have found:
for %i in (*.mp4) do ffmpeg -i "%i" "%~ni.mp3
As you can see I am trying to really toy with these codes, each one is excellent but I would love a combined ffmpeg code that A) takes a folder full of mp4s b) compresses them where I can customize the -crf and c) converts them to gifs with either a prefix or suffix added on or some other way where I can still recognize what the original file was.
If there is a way to do this without a customizable -crf then that is doable.
Thank you all for any help!
