I have a whole bunch of stereo samples that have loop points. Although they are stereo files, they are actually monaural, so they take up more disk space than necessary.
Every batch conversion method I have tried seems to strip the loop points from the files.
Is there a way to retrain those when converting them to mono?
How to convert stereo to mono without losing markers
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- KVRAF
- 16840 posts since 8 Mar, 2005 from Utrecht, Holland
I say why bother. These days disk space is cheaper than your time & effort.
We are the KVR collective. Resistance is futile. You will be assimilated. 
My MusicCalc is served over https!!
My MusicCalc is served over https!!
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- KVRAF
- 3370 posts since 19 Mar, 2008 from germany
I'd say, Wavosaur would do what you want. 
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- KVRist
- 247 posts since 5 May, 2020
If you're OK with command-line programs, sox will do it: http://sox.sourceforge.net/ It's free open-source.
This program has the most difficult to follow instructions I've ever seen (and I'm an embedded systems software engineer for over 40 years.) But if you're interested I can give you the command line to do it, either file-at-a-time or bulk. It's one of those things where getting started is excruciating, but given a few working examples it's easy to modify them to suit a given purpose. It's great for use in scripts to do things you do a lot (which is often the case for people who create large sample sets.)
Top further save space, you can then convert the files to flac. So far the only way I've found to convert .wav to .flac that preserves the loops is to use the flac command-line application and pass the --keep-foreign-metadata option.
For 24-bit files, that would reduce the space by a factor of about 4. For 16-bit files, the factor would be better, probably around 8 (because 16-bit audio is inherently easier to compress losslessly than 24-bit audio. The low order bits of 24-bit audio is noise, and noise can't be compressed losslessly.)
This program has the most difficult to follow instructions I've ever seen (and I'm an embedded systems software engineer for over 40 years.) But if you're interested I can give you the command line to do it, either file-at-a-time or bulk. It's one of those things where getting started is excruciating, but given a few working examples it's easy to modify them to suit a given purpose. It's great for use in scripts to do things you do a lot (which is often the case for people who create large sample sets.)
Top further save space, you can then convert the files to flac. So far the only way I've found to convert .wav to .flac that preserves the loops is to use the flac command-line application and pass the --keep-foreign-metadata option.
For 24-bit files, that would reduce the space by a factor of about 4. For 16-bit files, the factor would be better, probably around 8 (because 16-bit audio is inherently easier to compress losslessly than 24-bit audio. The low order bits of 24-bit audio is noise, and noise can't be compressed losslessly.)
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- KVRAF
- 2211 posts since 20 Sep, 2013 from Poland
Yeah, was gonna say, I accidentally included some looped files in a folder I was applying fades to with SOX, and that kept the loop points. Not the user-friendliest, certainly, but if you only need it to do one-two things, then keeping batch files or command syntax for that handy will get the job done quickly.