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`
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

User specified a model → use directly.
Consult the qwencloud-model-selector skill when model choice depends on capability, scenario, or pricing.
No signal, clear task → per-mode 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
```
.

Models

t2v (Text-to-Video)

Model	Features
`wan2.6-t2v` recommended	Audio, multi-shot, 2–15s, 720P/1080P
`wan2.5-t2v-preview`	Audio, 5s/10s, 480P/720P/1080P
`wan2.2-t2v-plus`	Silent, 5s, 480P/1080P

i2v (Image-to-Video)

Model	Features
`wan2.6-i2v-flash` recommended	Audio/silent, multi-shot, 2–15s, 720P/1080P
`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.

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:

bash

python3 --version  # must be 3.9+

python3

is not found, try

python --version

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.

bash

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"`	`"1280720"` , `"19201080"`
r2v	`size`	`"WxH"`	`"1280720"` , `"19201080"`
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)
wan2.6-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 — verify availability in the user's QwenCloud console before assuming any call is free.

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.

Install now — I'll run the install command for you

Skip for now — do nothing this time

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"):

Look for
```
qwencloud-update-check/SKILL.md
```
in sibling skill directories.

If found — run:

python3 <qwencloud-update-check-dir>/scripts/check_update.py --print-response

and report the result.

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

qwencloud-video-generation

NPX Install

Tags

SKILL.md Content