Convert#

The Convert screen (sidebar 🔄, Ctrl+5) batch-converts recordings (.db) and BDF files into analysis formats. Controls are on the left, the matching FILES list on the right; a status line reports “{sel} selected – {vis} visible” and conversion progress.

The âźł Refresh button in the header rescans the input directory so files added since you opened the screen appear in the list. The list also auto-rescans whenever you return to the Convert tab.

Converting files#

  1. Input directory — where to look for recordings. “Default” points at your recordings folder; “Open” reveals it in the file manager.

  2. Output directory — where converted files are written.

  3. Search pattern — a glob, searched recursively. * matches everything; something like sub-*/**/*.db narrows to a subject’s subfolder.

  4. SOURCE FORMATS — tick .db and/or .bdf.

  5. TARGET — pick the output format:

    Format

    Use with

    FIFF/FIF (default)

    MNE-Python pipelines.

    SET

    EEGLAB.

    BDF

    General biosignal interchange.

    CSV

    Spreadsheets, custom scripts.

  6. Tick the files you want in the FILES list (“Select all” / “Clear” helps for large batches).

  7. Click the green “Convert selected files”. Progress is shown per file — “Converting {n} of {total} files ({pct}%)” — and a running conversion can be stopped with “Cancel conversion”.

Options#

  • “Synchronize start time across streams” — when a recording contains several streams, crop all of them to a common start time (t = 0) in the output.

If something is greyed out or empty#

  • “Convert selected files” disabled: you need valid input and output directories, at least one selected file, a chosen target format, and at least one source format ticked (“Select at least one source format.”).

  • “No files match the current directory, pattern, and source format filters.” — widen the pattern to *, check the input directory, or tick the other source format.