laitszkin/docs-to-voice

Docs to Voice

Standards

• Evidence: Confirm project_dir, input source, mode, and environment-backed settings before generation.
• Execution: Use apltk docs-to-voice to write audio plus matching timeline and subtitle files under project_dir/audio/{project_name}/.
• Quality: Respect mode-specific options, sentence splitting rules, and post-process requirements such as ffmpeg for speed changes.
• Output: Return the absolute output audio path together with the generated .timeline.json and .srt companions.

Workflow

1. Collect inputs.

   • Require project_dir.
   • Accept either raw text or one input text file.
   • Set project_name; default to basename of project_dir.

2. Select mode.

   • --mode say for local generation.
   • --mode api for Model Studio API generation.
   • If omitted, load DOCS_TO_VOICE_MODE from .env, then shell environment variables; fallback say.

3. Prepare output path.

   • Build project_dir/audio/{project_name}/.
   • Create directory if it does not exist.

4. Generate audio.

   • say mode supports --voice, --rate, and punctuation-pause enhancement.
   • api mode supports --api-endpoint, --api-model, --api-voice, and reads DASHSCOPE_API_KEY.
   • api mode sends one request per sentence and concatenates all sentence audio into one final file.
   • api mode auto discovers model max input length; only oversized sentences are split by that limit.
   • --max-chars (or DOCS_TO_VOICE_MAX_CHARS) can override the sentence split limit; 0 disables chunking.
   • --speech-rate (or DOCS_TO_VOICE_SPEECH_RATE) applies optional post-process speed adjustment and requires ffmpeg when value is not 1.
   • API splitting uses model counting rules (for qwen3-tts, CJK chars count as 2 units).

5. Generate sentence-level timeline files.

   • Write JSON timeline and SRT subtitle files next to audio output.
   • In api mode, timeline start/end uses per-sentence audio durations whenever available.

6. Return completion details.

   • Report absolute output audio path.

CLI reference

Use apltk docs-to-voice --help as the live command reference for required inputs, mode-specific flags, environment variables, examples, and expected output paths.

Troubleshooting

• say mode: confirm command -v say and command -v python3.
• api mode: confirm command -v python3 and valid DASHSCOPE_API_KEY.
• Long-text chunk merge (especially AIFF output): recommend command -v ffmpeg.
• If output exists, use the overwrite or rename options shown in apltk docs-to-voice --help.