Batch Windows Utility for Changing Audio Tempo, Music Key, andPlayback Rate
Does ffmpeg not do what you want? It's command line driven (LOTS of
options), so easy to do in a batch file with a for loop.
If it is music, why do you need MP4?
Mat Nieuwenhoven
Well.. being a novice am unfamiliar with command line processes thats why i want some software with simple interface.. For output you are right (Y) theres no need for it to be in mp4 ..any format which is acceptable to youtube shall suffice. Is there any particular software in your mind to ask this? I just want one fixed JPG which i should input along with 600 mp3 files ..and get them converted automatically to mp4 or wmv or mpg or avi. Plz guide if it is possible. I tried FREEMAKE Video software which does batch convert job but asks to input JPG for every mp3 :-(
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