Classifying failure modes in URL-based transcription

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A single “transcription failed” bucket hides several different problems. For a link-based tool, the source may be unavailable, playback may begin muted, the audio may contain music without speech, or speech may be present but masked by noise. Those cases need different follow-up tests. A useful test record starts with retrieval: does the public URL load from a clean session, and can the audio be played? Next, note the actual sound after unmuting the player.

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