stem.mp4 support?

[cjhines7]

Any plans to add output to stem.mp4 for NI Traktor? Would be a great addition to this awesome software

http://stemsmusic.wpengine.com/stems-is-for-developers/

[awesomer]

FYI,

https://github.com/axeldelafosse/stemgen

Is an actively maintained project that wraps a demucs v3 4 stem model and supports NI stem generation.

[kartguru]

I believe https://github.com/axeldelafosse/stemgen is designed for MacOS. UVR is a multi-OS GUI

https://github.com/faroit/stempeg uses MP4Box to create stem.mp4

also consider these discussions referring to output quality of the NI stem creator
https://community.native-instruments.com/discussion/9966/stem-format-for-self-assemble
specifically https://community.native-instruments.com/discussion/comment/51149/#Comment_51149

[awesomer]

Stemgen is written in BASH and runs on any OS that can run BASH scripts. It also has dependencies on python (to wrap the official-from-Native-Instruments ni-stem codebase), ffmpeg, sox, jo, and imagemagick. Notably, it does not rely on MP4Box. I have used stemgen (with the full demucs GPU support) myself under WSL2 Ubuntu for Windows.

To clarify slightly regarding output quality of NI-compatible STEMS (what other uses are there for STEMS? it's a NI format, what even is a non-NI-compatible STEM file??) :

As of 2023, only AAC STEMs work on the Windows version of NI Traktor. Both ALAC and AAC STEMs work in MacOSX. I have tested and verified this using ALAC STEMs produced by stemgen wrapping ni-stem.