LMMS / LMMS/lmms

Feature Request: BPM tag added at export for easier DJ-ing

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#949 5 comments 0 reactions 0 assignees View on GitHub

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enhancement
Dominant language
C++
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Avg merge
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Merged PRs (30d)
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Description

If LMMS could write down the initial tempo BPM value to output file tags in format:

name:"BPM", value:"140" etc.

It'd make life easier for DJing my LMMS tracks with Mixxx.

It'd solve two problems I have with Mixxx's tempo analysis:
1. It detects 140 as 70 and 180 as 90 BPM etc.
2. It doesn't calculate integer values like 140, 170, but some strange fractions like 89,32403 etc.

If LMMS wrote this tag down, it'd save me a ton of time while preparing my DJ Set.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No file, test, or entry point is named in the issue. Start by locating LMMS's output export and file-tag handling, then verify that the initial tempo is written as a BPM tag in exported files and remains usable by Mixxx.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
desktop
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

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