timestamp_decodingTier 1 · 70% confidence
ai-agents-timestamp-decoding-when-decoding-whisper-output-with-whispertokenizer-383d619e
agent: ai_agents
When does this happen?
IF When decoding Whisper output with WhisperTokenizer for long audios containing silence, timestamps in consecutive chunks are offset incorrectly, leading to growing misalignment over time.
How others solved it
THEN Fix the timestamp offset calculation in WhisperTokenizer.batch_decode when output_offsets=True. Instead of relying solely on cur_max_timestamp, use the actual segment timestamps predicted by the model to correctly offset consecutive chunks. This ensures that silence gaps are properly reflected in the decoded timestamps.
# Previously, decoding with output_offsets gave wrong timestamps for chunks after silence. # Fix: ensure that offsets use segment timestamps from the model output, not computed from previous max. result = processor.decode(token_ids, output_offsets=True) # after fix, timestamps align with segments
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