Re: Ways to generate transcripts for videos over 4GB

kurtsoeser these techniques don't transcribe the audio - they create an MP3 from an MP4 which is CONSIDERABLY smaller than the MP4 and probably avoid the file size restrictions of your transcription method.

Assumption: You've installed ff-mp-eg. Google is your friend. 🙂

(Dashes between those six letters because that solution is apparently verboten in this community. Because who would want an answer that works? Below I'm referring to it as "fred".) 

Basic:

C:\fred\bin\fred.exe -i video.mp4 audio.mp3

To completely ignore the video (-vn) during processing (speeds it up) (this is fastest):

C:\fred\bin\fred.exe -i video.mp4 -vn audio.mp3

To completely ignore the video (-vn) during processing (speeds it up) and specify a constant bitrate of 192 kbs (-b:a 192K):

C:\fred\bin\fred.exe -i video.mp4 -b:a 192K -vn audio.mp3

To encode variable bitrate using libmp3lame (-q:a or -qscale:a):

C:\fred\bin\fred.exe -i input.wav -codec:a libmp3lame -qscale:a 2 output.mp3

This can be batched so you can rip through a pile of MP4 in a folder and create all the MP3s at once. For example:

@echo off
for %%a in ("*.mp4") do C:\fred\bin\fred.exe -i "%%a" -b:a 192K -vn "%%a.mp3"
pause

Note: I am NOT an fred expert, just some guy who hacked his way from here to there. Since you have access to AI chat tools, I expect you'll be able to create far more elegant and useful command lines than these. Good luck!