macOS Batch Converter (FLAC): Move Destination File on Error not moving failures

[AudibleImagery]

Environment

• macOS: Tahoe 26.0
• dBpoweramp Music Converter (Batch Converter) for macOS: Current
• Encoder: FLAC (Compression Level 8, Verify Written Audio checked)
• DSPs configured (in the FLAC encoder’s DSP Effects dialog):
  • Trim Silence
  • Delete Source File
  • Move Destination File on Error
    • Root = [origpath]
    • Naming = errors/[origfilename]

Goal
When a Batch Converter job is marked Error by the GUI, relocate the destination file to:
<source folder>/errors/<original filename>.flac
Observed

• Conversions that the GUI shows as Error do not result in the destination file being moved to the errors/ subfolder. No moved copy appears under errors/ even though the DSP is set as above.

Steps I took (GUI only)

1. In Batch Converter, select sources and choose Convert To ➜ FLAC.
2. Click DSP Effects and add Trim Silence plus Move Destination File on Error.
   • Root: [origpath]
   • Naming: errors/[origfilename]
3. Ensure Verify Written Audio is checked in the FLAC encoder options.
4. Run a conversion that the GUI flags as Error.
5. Expected: destination moved to <source>/errors/….
   Actual: not moved.

Additional note

• I also tried Multi-Encoder. On macOS, I didn’t see a top-level DSP chain for the entire Multi-Encoder job; I could only add DSPs inside the FLAC child encoder panel. Using the same settings there, I still observed that failed outputs were not moved.

Questions

1. Are the paths above correct on macOS for placing moved outputs under <source>/errors/…?
2. What exact condition triggers Move Destination File on Error in the Batch Converter GUI?
3. Are there any known macOS limitations in Batch Converter (or Multi-Encoder) that would prevent this DSP from executing or creating the errors/ subfolder?
4. If supported, could you share a confirmed-working example (screenshots of the FLAC DSP dialog) so I can mirror it?

Happy to provide:

• Short debug logs from Batch Converter showing runs where the job is Error yet the destination wasn’t moved.

Thanks!

[PeterP]

Thanks for the detailed bug report!

Fixed in new build-

https://www.dbpoweramp.com/beta/DMC-2025-09-18.dmg

[AudibleImagery]

Thanks for the detailed bug report!

Fixed in new build-
https://www.dbpoweramp.com/beta/DMC-2025-09-18.dmg

Thank you, Peter!! This is the second time you've fixed a new build just for me. I'm still using External scripting in JRiver thanks to you!

[AudibleImagery]

Thanks for the detailed bug report!

Fixed in new build-
https://www.dbpoweramp.com/beta/DMC-2025-09-18.dmg

I don't know what I'm doing wrong. I can't get this DSP effect to work when I use its default settings, even though I'm using the new build. I don't know if this is the problem but I'm using this DSP effect in FLAC encoing in Batch Convert.


Environment

• App: dBpoweramp Music Converter, Release 2025‑09‑18 (CFBundleVersion 1). App path: /Applications/dBpoweramp Music Converter.app.
• macOS: see attached macos.txt.
• Repro file: 1‑byte bad.wav (intentionally invalid).

Expected
With DSP Move Destination File on Error set to Root=[origpath] and Naming=error/[origfilename], a failed conversion should move the destination artifact into …/error/. If the encoder writes a temp file (for example *.flac.tmp) and never promotes to a final *.flac on failure, the DSP should still relocate that temp artifact.

Actual
On an early decode failure (“missing fmt chunk”), the conversion fails and nothing is moved into …/error/. No final bad.flac is created, and the temp artifact is not moved either.

Reproduce

1. Enable Control Center → Advanced Settings → Diagnostics → Write debug logs.
2. Create bad.wav with content notawav in a test folder.
3. Open Music Converter. Encoder FLAC (level 8, verify).
4. DSP Move Destination File on Error with Root=[origpath], Naming=error/[origfilename].
5. Convert bad.wav. Observe failure and empty error/ folder.

What the logs show

• CoreConverter is prepared with the expected input and output paths (so the backend ran):
  About to start CoreConverter: -infile="/Users/.../bad.wav" -outfile="/Users/.../bad.flac"
• The command line includes the Move Destination File on Error DSP (configuration is correct):
  ... -convert_to="FLAC" ... -dspeffect1="Move Destination File on Error=-root={qt}[origpath]{qt} -naming={qt}error/[origfilename]{qt} ..."
• The decoder fails immediately on the bogus WAV with repeated:
  Error cannot find 'fmt ' chunk. [PullOutFMTnDATA]

Question
On macOS builds, the encoder writes to a temp file and only promotes to the final *.flac on success. When decode fails before promotion, should the Move Destination File on Error DSP also move the temp artifact (for example bad.flac.tmp) into error/? Or should CoreConverter emit a final placeholder so the DSP can relocate it?

Attachments
Zip bundle with:

• DBDebug-*.txt from the failing run (contains the command line and the error)
• ls-before.txt, ls-after.txt, ls-error.txt (directory listings before/after)
• dbpoweramp_version.txt and macos.txt

[Spoon]

If no part of the file can be decoded, then there is no destination file to move.