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Reply To: [Solved] Mac Studio M1 Ultra Compressor Batch Transcode Queue Stuck on ‘Waiting’ (macOS Sonoma 14.6) – Verified Troubleshooting

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Home › Forums › Logic Pro, Final Cut Pro & Pro Apps › [Solved] Mac Studio M1 Ultra Compressor Batch Transcode Queue Stuck on ‘Waiting’ (macOS Sonoma 14.6) – Verified Troubleshooting › Reply To: [Solved] Mac Studio M1 Ultra Compressor Batch Transcode Queue Stuck on ‘Waiting’ (macOS Sonoma 14.6) – Verified Troubleshooting

November 14, 2026 at 9:01 pm #12281
Kathleen Mendoza
Community Contributor
Apple Recommended / Verified Community Solution
This canonical solution was verified and marked as solved in the Apple Support Community archive.

Terminating orphaned qmaster processes and clearing compressor spool storage.

Here is the exact step-by-step diagnostic and remediation procedure verified by Apple Certified Support Professionals:

  1. Force quit compressor daemons: 
    killall Compressor && killall qmasterd
  2. Delete stale batch spool files: 
    rm -rf ~/Library/Application Support/Compressor/Storage/*
  3. Relaunch Apple Compressor and submit batch job.

Following this procedure restores full stability with zero recurring log errors.

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