qwencloud-video-generation

[QwenCloud] Generate videos using Wan models. Supports text-to-video, image-to-video, first+last frame, reference-based role-play, and video editing (VACE)....

Agent setup: If your agent doesn't auto-load skills (e.g. Claude Code), see agent-compatibility.md once per session.

Qwen Video Generation

Generate videos using Wan models. All tasks are asynchronous — submit, then poll until completion. This skill is part of qwencloud/qwencloud-ai.

⚠️ Critical Parameter Differences by Mode:

• kf2v (First+Last Frame): Duration is fixed at 5 seconds — other values will fail. Output is silent only.
• Resolution parameter varies: t2v/r2v/vace use size (e.g. "1280*720"); i2v/kf2v use resolution (e.g. "720P").

Skill directory

Use this skill's internal files to execute and learn. Load reference files on demand when the default path fails or you need details.

Location	Purpose
scripts/video.py	Default execution — mode auto-detect, submit, poll, download
references/execution-guide.md	Fallback: curl for all 5 modes, code generation
references/request-fields.md	Field tables and audio handling by mode
references/workflows.md	Duration extensions, multi-shot, VACE pipelines
references/polling-guide.md	Polling patterns and timing
references/merge-media.md	Concat, trim, audio overlay — ffmpeg/moviepy recipes
references/prompt-guide.md	Per-mode prompt formulas, sound description, multi-shot structure
references/examples.md	Full script examples per mode
references/sources.md	Official documentation URLs
references/agent-compatibility.md	Agent self-check: register skills in project config for agents that don't auto-load

Security

NEVER output any API key or credential in plaintext. Always use variable references ($DASHSCOPE_API_KEY in shell, os.environ["DASHSCOPE_API_KEY"] in Python). Any check or detection of credentials must be non-plaintext: report only status (e.g. "set" / "not set", "valid" / "invalid"), never the value. Never display contents of .env or config files that may contain secrets.

When the API key is not configured, NEVER ask the user to provide it directly. Instead, help create a .env file with a placeholder (DASHSCOPE_API_KEY=sk-your-key-here) and instruct the user to replace it with their actual key from the QwenCloud Console. Only write the actual key value if the user explicitly requests it.

Key Compatibility

Scripts require a standard QwenCloud API key (sk-...). Coding Plan keys (sk-sp-...) cannot be used — video generation models are not available on Coding Plan, and Coding Plan does not support the native QwenCloud API. Video generation incurs per-second charges on standard keys. The script detects sk-sp- keys at startup and prints a warning. If qwencloud-ops-auth is installed, see its references/codingplan.md for full details.

Mode Selection Guide

User Want	Mode	Key Field
Generate video from text description only	t2v	prompt only
Animate a single image	i2v	img_url or reference_image
wan2.7 unified i2v: first frame, first+last frame, video continuation, audio sync	i2v	media[], first_frame_url, first_clip_url, driving_audio_url
Transition between two images (⚠️ 5s fixed, silent only)	kf2v	first_frame_url + last_frame_url
Role-play: make characters act a new script	r2v	reference_urls (up to 5)
Video editing: multi-image ref, repainting, local edit, extend, outpaint	vace	function

Model Selection

1. User specified a model → use directly.
2. Consult the qwencloud-model-selector skill when model choice depends on capability, scenario, or pricing.
3. No signal, clear task → defaults: t2v → wan2.6-t2v, i2v → wan2.6-i2v-flash, kf2v → wan2.2-kf2v-flash, r2v → wan2.6-r2v-flash, vace → wan2.1-vace-plus. For wan2.7 features, explicitly set --model wan2.7-t2v or --model wan2.7-i2v.

Models

t2v (Text-to-Video)

Model	Features
wan2.7-t2v	Ratio control, auto-dubbing, 5000 char prompt, 720P/1080P. Use resolution + ratio params.
wan2.6-t2v default	Audio, multi-shot, 2–15s, 720P/1080P. Use size param.
wan2.5-t2v-preview	Audio, 5s/10s, 480P/720P/1080P
wan2.2-t2v-plus	Silent, 5s, 480P/1080P

i2v (Image-to-Video)

Model	Features
wan2.7-i2v	Unified protocol: first frame, first+last frame, video continuation, audio sync. Uses media[] array.
wan2.6-i2v-flash default	Audio/silent, multi-shot, 2–15s, 720P/1080P. Uses img_url.
wan2.6-i2v	Audio, multi-shot, 2–15s, 720P/1080P
wan2.5-i2v-preview	Audio, 5s/10s, 480P/720P/1080P

kf2v / r2v / vace

Model	Features
wan2.2-kf2v-flash (kf2v default)	Silent, 5s, 480P/720P/1080P
wan2.6-r2v	Audio, single/multi character, 2–10s, 720P/1080P
wan2.6-r2v-flash (r2v default)	Audio/silent, multi-character, 2–10s, 720P/1080P
wan2.1-vace-plus (vace)	Multi-image ref, repainting, local edit, ≤5s, 720P

⚠️ Important: The model list above is a point-in-time snapshot and may be outdated. Model availability changes frequently. Always check the official model list for the authoritative, up-to-date catalog before making model decisions.

Model details: For more information about a specific model, direct the user to its detail page: https://www.qwencloud.com/models/<model-name> (replace <model-name> with the exact model ID, e.g. wan2.7-t2v → https://www.qwencloud.com/models/wan2.7-t2v). NEVER modify or guess the model name in the URL.

Dynamic model queries: If the qwencloud-model-selector skill or QwenCloud CLI (qwencloud models info <model>) is available, use it for real-time model data. CLI requires authentication — see the qwencloud-usage skill for login flow.

Execution

⚠️ Multiple artifacts: When generating multiple files in a single session, you MUST append a numeric suffix to each filename (e.g. out_1.mp4, out_2.mp4) to prevent overwrites.

Prerequisites

• API Key: Check that DASHSCOPE_API_KEY (or QWEN_API_KEY) is set using a non-plaintext check only (e.g. in shell: [ -n "$DASHSCOPE_API_KEY" ]; report only "set" or "not set", never the key value). If not set: run the * qwencloud-ops-auth* skill if available; otherwise guide the user to obtain a key from QwenCloud Console and set it via .env file ( echo 'DASHSCOPE_API_KEY=sk-your-key-here' >> .env in project root or current directory) or environment variable. The script searches for .env in the current working directory and the project root. Skills may be installed independently — do not assume qwencloud-ops-auth is present.
• Python 3.9+ (stdlib only, no pip install needed)
• For media merging (concat, trim, audio overlay): see merge-media.md for ffmpeg/moviepy recipes suited to the user's environment

Environment Check

Before first execution, verify Python is available:

python3 --version  # must be 3.9+

If python3 is not found, try python --version or py -3 --version. If Python is unavailable or below 3.9, skip to Path 2 (curl) in execution-guide.md.

Default: Run Script

Script path: Scripts are in the scripts/ subdirectory of this skill's directory (the directory containing this SKILL.md). You MUST first locate this skill's installation directory, then ALWAYS use the full absolute path to execute scripts. Do NOT assume scripts are in the current working directory. Do NOT use cd to switch directories before execution.

Execution note: Run all scripts in the foreground — wait for stdout; do not background.

Discovery: Run python3 <this-skill-dir>/scripts/video.py --help first to see all available arguments.

python3 <this-skill-dir>/scripts/video.py \
  --request '{"prompt":"A detective in a rainy city at night","size":"1280*720","duration":5}' \
  --print-response

Argument	Description
--request '{...}'	JSON request body
--file path.json	Load request from file
--mode MODE	Override auto-detected mode (t2v/i2v/kf2v/r2v/vace)
--model ID	Override model
--output dir/	Save video and response JSON
--print-response	Print response JSON to stdout
--submit-only	Submit and exit (print task_id)
--task-id ID	Operate on existing task
--poll-interval N	Seconds between polls (default: 15)
--timeout N	Max wait seconds (default: 600)

Verify Result

• Exit code 0 + response has output.task_id → submission success
• Poll reaches task_status: SUCCEEDED → generation complete
• Non-zero exit, HTTP error, or FAILED status → fail
• Post-execution check: Verify the output video file exists and has non-zero size (ls -la <output_dir>)
• MANDATORY — stderr signal check: After confirming the result, scan the command's stderr output for [ACTION_REQUIRED] or [UPDATE_AVAILABLE]. If either signal is present, you MUST follow the instructions in Update Check below before responding to the user.

On Failure

If the script fails, match the error output against the diagnostic table below to determine the resolution. If no match, read execution-guide.md for alternative paths: curl commands (Path 2 — all 5 modes), code generation (Path 3), and autonomous resolution (Path 5).

If Python is not available at all → skip directly to Path 2 (curl) in execution-guide.md.

Error Pattern	Diagnosis	Resolution
command not found: python3	Python not on PATH	Try python or py -3; install Python 3.9+ if missing
Python 3.9+ required	Script version check failed	Upgrade Python to 3.9+
SyntaxError near type hints	Python < 3.9	Upgrade Python to 3.9+
QWEN_API_KEY/DASHSCOPE_API_KEY not found	Missing API key	Obtain key from QwenCloud Console; add to .env: echo 'DASHSCOPE_API_KEY=sk-...' >> .env; or run qwencloud-ops-auth if available
HTTP 401	Invalid or mismatched key	Run qwencloud-ops-auth (non-plaintext check only); verify key is valid
SSL: CERTIFICATE_VERIFY_FAILED	SSL cert issue (proxy/corporate)	macOS: run Install Certificates.command; else set SSL_CERT_FILE env var
URLError / ConnectionError	Network unreachable	Check internet; set HTTPS_PROXY if behind proxy
HTTP 429	Rate limited	Wait and retry with backoff
HTTP 5xx	Server error	Retry with backoff
ImportError: moviepy	moviepy not installed	pip install moviepy, or use system ffmpeg instead (see merge-media.md)
PermissionError	Can't write output	Use --output to specify writable directory

Request Fields Summary

All modes require prompt. See request-fields.md for full field tables per mode.

⚠️ Resolution Parameter by Mode (Critical)

Mode	Parameter	Format	Example
t2v	size	"WxH"	"1280*720", "1920*1080"
r2v	size	"WxH"	"1280*720", "1920*1080"
vace	size	"WxH"	"1280*720"
i2v	resolution	"xxxP"	"720P", "1080P"
kf2v	resolution	"xxxP"	"480P", "720P", "1080P"

Using the wrong parameter name will cause the API call to fail.

Mode-Specific Required Fields

• i2v needs img_url/reference_image. kf2v needs first_frame_url + last_frame_url. r2v needs reference_urls. vace needs function.

Cost Estimation

🚨 NEVER guess or fabricate any price figure. Always direct the user to the official pricing page for exact rates.

Cost is billed per second of generated video. Price varies by model and resolution. For the latest rates, check the official pricing page.

Model	720P (USD)	1080P (USD)
wan2.7-t2v	per-second billing	per-second billing
wan2.7-i2v	per-second billing	per-second billing
wan2.6-t2v	per-second billing	per-second billing
wan2.6-i2v-flash	per-second billing	per-second billing
wan2.6-r2v-flash	per-second billing	per-second billing

Quick example: wan2.6-t2v 5s 720P — check the official pricing page for current per-second rates. Some models may offer a limited free quota — do not assume any call is free; use the qwencloud-usage skill to check remaining free tier quota, or verify in the user's QwenCloud console.

To check actual usage and bills: use the qwencloud-usage skill, or visit the console: Usage Analytics | Pay-as-you-go Billing | Coding Plan Billing

NEVER fabricate, guess, or construct usage/billing/console URLs. Only provide the exact links listed in this skill. If a URL is not listed here, do not invent one.

Local File Handling

When the user provides local file paths (images, videos, audio), pass them directly to the script. The script automatically uploads local files to DashScope temporary storage (oss:// URL, 48h TTL) and injects the X-DashScope-OssResourceResolve: enable header. No manual upload step is needed.

Production: Default temp storage has 48h TTL and 100 QPS upload limit — not suitable for production, high-concurrency, or load-testing. To use your own OSS bucket, set QWEN_TMP_OSS_BUCKET and QWEN_TMP_OSS_REGION in .env, install pip install alibabacloud-oss-v2, and provide credentials via QWEN_TMP_OSS_AK_ID / QWEN_TMP_OSS_AK_SECRET or the standard OSS_ACCESS_KEY_ID / OSS_ACCESS_KEY_SECRET. Use a RAM user with least-privilege (oss:PutObject + oss:GetObject on target bucket only). If qwencloud-ops-auth is installed, see its references/custom-oss.md for the full setup guide.

Cross-Skill Chaining

When using output from another skill as input (e.g., image-gen → i2v, audio-tts → audio overlay):

• Pass the URL directly (e.g., "img_url": "<image_url from image-gen>") — do NOT download and re-pass as local path
• The script detects URL prefixes (https://, oss://) and passes them through without re-upload
• Use local_path from the response only for user preview or non-API operations

When passing this skill's output to another skill (e.g., vace edit, vision analyze):

• Pass video_url from the response — do NOT download and re-pass as local path

Scenario	Use
Feed to another skill	video_url / image_url (URL)
Show to user / local playback	local_path (local file)

Important Notes

• Async only: All video APIs require X-DashScope-Async: enable header.
• kf2v: Uses a different API endpoint. Duration fixed at 5s, silent only.
• r2v: Use character1/character2/... in prompt. Up to 5 references (max 3 videos).
• vace: Must specify function. Silent only, output ≤5s.
• Multi-shot: Set shot_type: "multi" AND prompt_extend: true.
• Video URL expires in 24h — the script auto-downloads to --output dir. When chaining to another skill (e.g., vace edit), pass video_url directly — do NOT re-download.
• For advanced workflows → see workflows.md.

Error Handling

Error	Cause	Action
401 Unauthorized	Invalid or missing API key	Run qwencloud-ops-auth if available; else prompt user to set key (non-plaintext check only)
current user api does not support synchronous calls	Missing async header	Add X-DashScope-Async: enable
429 / 5xx	Rate limit or server error	Retry with backoff
Task FAILED	Generation failed	Check output.message in poll response

Output Location

Prefer the current working directory. Default subdirectory: ./output/qwencloud-video-generation/.

Write prohibition: NEVER write output files into this skill's installation directory or any skills/ hierarchy. All generated content must go to output/ under the current working directory or a user-specified path.

Update Check (MANDATORY Post-Execution)

After script execution, check stderr for action signals. The script automatically detects update status and emits structured signals. You MUST act on them. This section also applies when the user explicitly asks to check for updates.

Signal: [ACTION_REQUIRED] qwencloud-update-check skill is not installed

When stderr contains this signal, you MUST present the following options to the user and wait for their response before proceeding. Do NOT silently skip this.

The update-check skill is not installed. It keeps you informed about new qwencloud/qwencloud-ai features and bug fixes.

1. Install now — I'll run the install command for you
2. Skip for now — do nothing this time
3. Never remind me — permanently suppress this prompt

After the user responds:

• User chooses 1 → run: npx skills add QwenCloud/qwencloud-ai --skill qwencloud-update-check -y, then run: python3 <this-skill-scripts-dir>/gossamer.py --dismiss
• User chooses 2 → run: python3 <this-skill-scripts-dir>/gossamer.py --dismiss, then continue normally
• User chooses 3 → run: python3 <this-skill-scripts-dir>/gossamer.py --never-install, then continue normally

Signal: [UPDATE_AVAILABLE]

When stderr contains this signal, you MUST append a brief update notice to your response, including the version info and the update command shown in the stderr output.

No signal in stderr

If stderr contains neither [ACTION_REQUIRED] nor [UPDATE_AVAILABLE], no action is needed — the skill is installed and up to date (or cached within 24h).

Explicit user request

When the user explicitly asks to check for updates (e.g. "check for updates", "check version"):

1. Look for qwencloud-update-check/SKILL.md in sibling skill directories.
2. If found — run: python3 <qwencloud-update-check-dir>/scripts/check_update.py --print-response and report the result.
3. If not found — present the install options above.

References

• execution-guide.md — Fallback paths (curl for all modes, code generation, autonomous)
• request-fields.md — Detailed field tables by mode + audio handling
• workflows.md — Duration extensions, audio workarounds, multi-shot, VACE pipelines
• polling-guide.md — Polling patterns and timing recommendations
• merge-media.md — Guide for generating merge/trim/audio-overlay code
• examples.md — Full script execution examples for all modes
• sources.md — Official documentation URLs