siliconflow-tts

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Generate speech audio via SiliconFlow Text-to-Speech API. Converts text to MP3/WAV/Opus/PCM using fnlp/MOSS-TTSD-v0.5 voices and SILICONFLOW_API_KEY.

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SiliconFlow TTS

Generate narration audio from text using SiliconFlow Text-to-Speech API.

Use this skill when:

You need voiceover or narration audio for a video
You need standalone TTS assets before composing with Remotion/MoviePy
You want to convert a script into reusable .mp3, .wav, .opus, or .pcm

Run

Do NOT set env vars inline (for example, SILICONFLOW_API_KEY=... python3 ...). The env var is already in the system environment; inline assignments break the exec permission check.

# Basic Chinese narration, saved under ./tmp/sf-tts-<ts>/speech.mp3
python3 ./skills/siliconflow-tts/scripts/tts.py --text "大家好，欢迎来到今天的视频。"

# Read text from a file
python3 ./skills/siliconflow-tts/scripts/tts.py \
  --text-file ./scripts/script.txt \
  --out-dir ./assets/audio

# Fragment workflow: read tts_requirement.md, extract voiceover/voice/speed,
# and output speech.mp3 + speech.json to ./fragments/01-hook/artifacts/
python3 ./skills/siliconflow-tts/scripts/tts.py ./fragments/01-hook/ --overwrite

# Select voice, format, and exact output path
python3 ./skills/siliconflow-tts/scripts/tts.py \
  --text "This is a demo voiceover." \
  --voice "fnlp/MOSS-TTSD-v0.5:benjamin" \
  --format wav \
  --sample-rate 44100 \
  --output ./assets/audio/demo.wav

Parameters

Flag	Default	Description
`fragment_dir`	—	Optional fragment directory under `fragments/`; when set, reads `tts_requirement.md` and defaults output to `artifacts/speech.<format>`
`--text`	—	Text to synthesize. Required unless `--text-file` or `fragment_dir` is set
`--text-file`	—	UTF-8 text file to synthesize. Must be relative and under `scripts`, `assets`, `tmp`, `output_videos`, or `fragments`
`--model`	`fnlp/MOSS-TTSD-v0.5`	SiliconFlow TTS model
`--voice`	`fnlp/MOSS-TTSD-v0.5:benjamin`	Voice ID
`--format`	`mp3`	Audio format: `mp3`, `opus`, `wav`, `pcm`
`--max-tokens`	—	Optional maximum output tokens
`--sample-rate`	—	Optional sample rate. `mp3`: 32000/44100; `opus`: 48000; `wav`/`pcm`: 8000/16000/24000/32000/44100
`--stream` / `--no-stream`	`--no-stream`	Request streaming or non-streaming response
`--speed`	—	Optional speech speed, range `0.25`–`4.0`
`--gain`	—	Optional audio gain, range `-10`–`10`
`--output`	—	Exact output file path under `assets/audio`, `tmp`, `output_videos`, or `fragments`
`--out-dir`	`./tmp/sf-tts-<ts>`	Output directory under `assets/audio`, `tmp`, `output_videos`, or `fragments` when `--output` is not set
`--overwrite`	off	Overwrite existing output audio/metadata files
`--no-asr-check`	off	Skip ASR self-check after TTS generation

Recommended voices

Voice ID	Notes
`fnlp/MOSS-TTSD-v0.5:benjamin`	幽默男声，语速较慢，推荐
`fnlp/MOSS-TTSD-v0.5:charles`	激昂男声，适合广告
`fnlp/MOSS-TTSD-v0.5:claire`	清澈女声，推荐
`fnlp/MOSS-TTSD-v0.5:david`	清脆男声
`fnlp/MOSS-TTSD-v0.5:diana`	可爱女声，娃娃音

Dialogue format

fnlp/MOSS-TTSD-v0.5 supports spoken dialogue scripts. Use speaker tags when writing multi-speaker dialogue:

[S1]Hello, how are you today?[S2]I'm doing great, thanks for asking!

Output

Audio file: speech.<format> or the path set by --output
Metadata file: speech.json beside the audio file, containing:
- duration: audio duration in seconds (via ffprobe)
- model, voice, format, text_chars, audio_bytes, file etc.

When used in the content-producer fragment workflow, pass the fragment directory directly. The script reads tts_requirement.md, extracts the ## 配音文案 / ## Voiceover Text section, reads voice/speed settings, and writes directly to the fragment's artifacts/ directory.

For tts_requirement.md, the script skips markdown headings, comments, and voice settings when synthesizing audio.

ASR Self-Check

After generating audio, the script automatically runs an ASR self-check (unless --no-asr-check is set):

Transcribes the generated audio via SiliconFlow ASR (TeleAI/TeleSpeechASR by default)
Compares transcription with the input text using Jaccard similarity
Threshold: 0.5 (50%) — based on testing, 50% Jaccard is sufficient for practical quality; higher thresholds caused excessive false negatives
Result printed as PASS or WARN; does not abort on failure

The ASR check calls /audio/transcriptions with multipart form fields file and model, matching SiliconFlow's transcription API. It requires SILICONFLOW_API_KEY; if not set, the check is silently skipped.

Environment Variables

Variable	Description
`SILICONFLOW_API_KEY`	Your SiliconFlow API key (required)
`SILICONFLOW_API_BASE`	Optional API base override, default `https://api.siliconflow.cn/v1`
`SILICONFLOW_ASR_MODEL`	Optional ASR model override, default `TeleAI/TeleSpeechASR`