byted-tos-audio-process

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Converts audio objects stored in Volcengine TOS into PCM-oriented WAV output through TOS data-process async jobs. Use this skill when the user needs to convert audio to PCM or WAV, resample audio to 16k, convert to mono, change sample format, normalize audio for ASR pipelines, or prepare TOS audio files for speech recognition — even if they don't explicitly mention 'PCM' or 'audio conversion'.

QUICK START

How to use this skill

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Source SKILL.md: https://github.com/bytedance/agentkit-samples/blob/HEAD/skills/byted-tos-audio-process/SKILL.md

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Volcengine TOS Audio Process

Convert audio files stored in Volcengine TOS into PCM-oriented WAV output through the TOS gateway's media_jobs API.

Setup (once per environment)

Install dependencies on first use:

cd {baseDir}
pip install -r {baseDir}/requirements.txt

Then run scripts with Python 3.7+:

python3 {baseDir}/scripts/<script>.py <args>

Environment Variables

This skill relies on the TOS identity declared in the metadata block. Common runtime variables are:

Environment Variable	Required	Description
`TOS_ACCESS_KEY`	Yes	TOS access key ID
`TOS_SECRET_KEY`	Yes	TOS secret access key
`TOS_ENDPOINT`	Yes	TOS endpoint URL
`TOS_REGION`	Yes	TOS region
`TOS_BUCKET`	Yes	Source bucket that stores the audio object
`TOS_OBJECT_KEY`	No	Source object key of the audio file. Can be overridden with `--key`
`TOS_SECURITY_TOKEN`	No	STS session token when using temporary credentials

Quick start

# Convert an audio object to 16k mono s16 WAV and wait for completion
python3 {baseDir}/scripts/audio_to_pcm.py \
  --key test.wav \
  --sample-rate 16000 \
  --channels 1 \
  --sample-format s16 \
  --output-object skill-test/audio/test_pcm.wav \
  --wait

Available scripts

Script	Purpose
`scripts/audio_to_pcm.py`	Submit an async `AudioConvert` job via the TOS gateway's `media_jobs` API that converts TOS audio into PCM-oriented WAV output. Supports `--wait` to poll until completion.
`scripts/tos_jobs_client.py`	Shared client for TOS gateway `doc_jobs`/`media_jobs` APIs using pre-signed URL auth.

Rules

TOS gateway API: This skill uses the TOS gateway's media_jobs API with job_type=AudioConvert. Authentication is handled via pre_signed_url from the TOS Python SDK and the TOS identity declared in the metadata block above.
Current output format: The output is a WAV file (PCM container), not raw headerless .pcm bytes.
Async job model: The script creates async jobs and optionally waits for completion with the --wait flag.
Language: Reply in the user's preferred language.