Hey guys,

quick question.

Does anyone have a suggestion for a software that converts .mp4 files to audio-only?

I have about 1.500 video files that I want to get rid of, but keep the audio.

Best scenario would be a software that I can paste a folder in and it just converts all the files to mp3.

Thanks in advance!

 

Bulk MP4 to MP3 Converter: How to Convert MP4 to MP3 in Batch
https://videoconverter.iskysoft.com/convert-mp4/bulk-mp4-to-mp3-converter.html

 

no I'm not
a couple of years back I was still DJing and a few clubs had TVs in there and with Serato you could Video-DJ. There were a few pools that offered DJ-ready HD videos and my hard drive hates me :D
Thats where my 1500 files stem from

I don't need those big video files anymore and would like to only keep the audio.

 

Wavepad Audio Editor https://www.nch.com.au/wavepad/index.html
Obviously I know it's an audio editor but it will easily batch process - convert your mp4 files to whatever audio format you want.

 

I'm currently converting all files via Reaper and I'm shocked how good it works. Never thought Reaper had that function.
Thanks to @tzzsmk !

 

Reaper's still crap at making my breakfast and doing my laundry.
Other than that - it's getting really hard to find stuff that Reaper can't do!

 

This will do it. Not sure the max number of files in one go, but it sounds great and has lots of settings and options:

https://apps.apple.com/us/app/pro-audio-converter/id445279797?mt=12

 

frankly one of things I wasn't able to figure out in Reaper is, howto render without ANY metadata (perhaps it's fixed now too),
some older samplers are really sensitive on audio files given, and only Audacity can do that afaik, it's weird...

 

just make sure the rendered files are alright and don't delete your original collection too early

 

I wonder if you have considered just to extract the audio without conversion to MP3, since most Mp4's have AAC audio which is quite compatible too. That way you do not lose quality and it's faster.

You beat me to it
Wait a min... I think I heard somewhere in v7 Reaper does batch laundry/drying and coffee...

 

Last edited: Apr 25, 2022

I really wanted to keep all the metadata, but it seems like reaper can't do that.
Serato uses custom meta attributes to store their infos like cue points, loops etc. and even after editing the new file with the old metadata, serato won't show the cue points.

 

1° Pazera Free Audio Extractor is free and does it all - between " over 70 audio and video formats " :

" Metadata (ID3v2, FLAC, WMA, MP4 (AAC), APE, Vorbis Comments and other tags) are automatically copied from the source files to the output files, if the selected output format supports storing metadata. "

http://www.pazera-software.com/products/audio-extractor/

2° If not enough : XRecode II ( old v1.0.0.232 AFAIC ). XRecode III needs a correct patch from what I read " elsewhere ".

Infos : http://xrecode.com/

 

both unfortunately not available for mac, but I appreciate your help.

 

I believe you need to enable keeping metadata?

 

Oups, then it is a good reason to not use them, for sure...

 

Last edited: Apr 25, 2022

I don't know if I should be laughing or crying that you're doubting I did that or not
Of course I enabled keeping the metadata.

 

On Mac : fre:ac ( v1.1.6 )

http://www.freac.org/

It keeps the metadata.

 

gave Pazera Free Audio Extractor a try and it didn't convert all the metadata to the new file.

I surely believe the way Serato writes the information for cue points or loops can't be converted to a new file, therefore I'm more than happy that Pro Audio Converter which @ClaudeBalls suggested works as far as having the same name behaviour in Serato.

And I'm not converting to mp3 anymore as @Xupito suggested. I'm only stripping the aac-file out of that mp4.

unfortunately it doesn't
thanks for your effort tho!

 

I just gave this a test - on Win - converting some tagged files I have with fre:ac ( v1.1.6 ), this into mp3 and FLAC as examples. I checked the results with Mp3tag ( v3.14 ) and the tags present at the beginning are all there after / in those conversions too.

But so this is on Win.

 

Last edited: Apr 25, 2022