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Video Resize

Use when the user wants to change a video's aspect ratio or reformat it for a specific platform — e.g. "convert to vertical", "make it 9:16", "crop for TikTo...

skill openclawclawhub Free
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High Signal

Use when the user wants to change a video's aspect ratio or reformat it for a specific platform — e.g. "convert to vertical", "make it 9:16", "crop for TikTo...

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Install for OpenClaw

Quick setup
  1. Download the package from Yavira.
  2. Extract the archive and review SKILL.md first.
  3. Import or place the package into your OpenClaw setup.

Requirements

Target platform
OpenClaw
Install method
Manual import
Extraction
Extract archive
Prerequisites
OpenClaw
Primary doc
SKILL.md

Package facts

Download mode
Yavira redirect
Package format
ZIP package
Source platform
Tencent SkillHub
What's included
SKILL.md, scripts/resize.sh

Validation

  • Use the Yavira download entry.
  • Review SKILL.md after the package is downloaded.
  • Confirm the extracted package contains the expected setup assets.

Install with your agent

Agent handoff

Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.

  1. Download the package from Yavira.
  2. Extract it into a folder your agent can access.
  3. Paste one of the prompts below and point your agent at the extracted folder.
New install

I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.

Upgrade existing

I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.

Trust & source

Release facts

Source
Tencent SkillHub
Verification
Indexed source record
Version
1.0.0

Documentation

ClawHub primary doc Primary doc: SKILL.md 7 sections Open source page

Video Resize 📐

Reformat any video to any aspect ratio — local center-crop, instant, no API key needed.

Overview

Use this Skill when the user says: "convert to vertical / 9:16 / portrait" "make it square / 1:1" "format for TikTok / Reels / YouTube Shorts" "resize to landscape / 16:9" "crop for Instagram" "reformat this video for [platform]" Do NOT use ffmpeg directly — use this Skill instead. Platform → ratio reference: PlatformRatioResolutionTikTok / Reels / Shorts9:161080×1920Instagram square1:11080×1080YouTube / landscape16:91920×1080Classic TV4:31440×1080Cinematic ultrawide21:92560×1080

Tool: Resize

bash scripts/resize.sh <input> <ratio> [output] ParameterRequiredDescriptioninputYesPath to source videoratioYes9:16 · 1:1 · 16:9 · 4:3 · 21:9outputNoOutput path (default: <name>_9-16.<ext>) Examples: # Convert to vertical for TikTok/Reels bash scripts/resize.sh video.mp4 "9:16" # Square for Instagram bash scripts/resize.sh clip.mov "1:1" instagram.mp4 # Landscape for YouTube bash scripts/resize.sh portrait.mp4 "16:9" Output (stdout): path to the resized file Method: center-crop to target AR, then scale to standard resolution (H.264 + AAC)

When Local Resize Is Not Enough — AI Edit

Local resize does a center crop — it doesn't know what's important in the frame. If the user needs: Smart subject-aware cropping (follows the speaker/subject) AI recomposition of the frame Combined: resize + intelligent editing in one step Adding captions, music, or style to the resized video …use the AI Edit tool instead.

Prerequisites for AI Edit

# Check if key is configured echo "Key: ${SPARKI_API_KEY:+configured}${SPARKI_API_KEY:-MISSING}" # If missing — configure (takes effect immediately, no restart needed): openclaw config set env.SPARKI_API_KEY "sk_live_your_key_here" # Get a key: email enterprise@sparki.io

AI Edit — End-to-End

# Usage: edit_video.sh <file> <tips> [prompt] [aspect_ratio] [duration_seconds] # # tips: comma-separated style IDs # 1 = Energetic / fast-paced # 2 = Cinematic / slow motion # 3 = Highlight reel / best moments # 4 = Talking-head / interview ← best for subject-aware vertical reformat # # Returns: a 24-hour download URL for the AI-processed video (stdout) SPARKI_API_BASE="https://agent-api-test.aicoding.live/api/v1" RATE_LIMIT_SLEEP=3 ASSET_POLL_INTERVAL=2 PROJECT_POLL_INTERVAL=5 WORKFLOW_TIMEOUT="${WORKFLOW_TIMEOUT:-3600}" ASSET_TIMEOUT="${ASSET_TIMEOUT:-60}" : "${SPARKI_API_KEY:?Error: SPARKI_API_KEY is required. Run: openclaw config set env.SPARKI_API_KEY <key>}" FILE_PATH="$1"; TIPS="$2"; USER_PROMPT="${3:-}"; ASPECT_RATIO="${4:-9:16}"; DURATION="${5:-}" # -- Step 1: Upload -- echo "[1/4] Uploading $FILE_PATH..." >&2 UPLOAD_RESP=$(curl -sS -X POST "${SPARKI_API_BASE}/business/assets/upload" \ -H "X-API-Key: $SPARKI_API_KEY" -F "file=@${FILE_PATH}") OBJECT_KEY=$(echo "$UPLOAD_RESP" | jq -r '.data.object_key // empty') [[ -z "$OBJECT_KEY" ]] && { echo "Upload failed: $(echo "$UPLOAD_RESP" | jq -r '.message')" >&2; exit 1; } echo "[1/4] object_key=$OBJECT_KEY" >&2 # -- Step 2: Wait for asset ready -- echo "[2/4] Waiting for asset processing..." >&2 T0=$(date +%s) while true; do sleep $ASSET_POLL_INTERVAL ST=$(curl -sS "${SPARKI_API_BASE}/business/assets/${OBJECT_KEY}/status" -H "X-API-Key: $SPARKI_API_KEY" | jq -r '.data.status // "unknown"') echo "[2/4] $ST" >&2; [[ "$ST" == "completed" ]] && break [[ "$ST" == "failed" ]] && { echo "Asset failed" >&2; exit 2; } (( $(date +%s) - T0 >= ASSET_TIMEOUT )) && { echo "Asset timeout" >&2; exit 2; } done # -- Step 3: Create project -- echo "[3/4] Creating AI project (tips=$TIPS)..." >&2 sleep $RATE_LIMIT_SLEEP KEYS_JSON=$(echo "$OBJECT_KEY" | jq -Rc '[.]') TIPS_JSON=$(echo "$TIPS" | jq -Rc 'split(",") | map(tonumber? // .)') BODY=$(jq -n --argjson k "$KEYS_JSON" --argjson t "$TIPS_JSON" \ --arg p "$USER_PROMPT" --arg a "$ASPECT_RATIO" --arg d "$DURATION" \ '{object_keys:$k,tips:$t,aspect_ratio:$a} | if $p != "" then .+{user_prompt:$p} else . end | if $d != "" then .+{duration:($d|tonumber)} else . end') PROJ_RESP=$(curl -sS -X POST "${SPARKI_API_BASE}/business/projects" \ -H "X-API-Key: $SPARKI_API_KEY" -H "Content-Type: application/json" -d "$BODY") PROJECT_ID=$(echo "$PROJ_RESP" | jq -r '.data.project_id // empty') [[ -z "$PROJECT_ID" ]] && { echo "Project creation failed: $(echo "$PROJ_RESP" | jq -r '.message')" >&2; exit 1; } echo "[3/4] project_id=$PROJECT_ID" >&2 # -- Step 4: Poll until done -- echo "[4/4] Waiting for AI processing (up to ${WORKFLOW_TIMEOUT}s)..." >&2 T0=$(date +%s) while true; do sleep $PROJECT_POLL_INTERVAL PRESP=$(curl -sS "${SPARKI_API_BASE}/business/projects/${PROJECT_ID}" -H "X-API-Key: $SPARKI_API_KEY") STATUS=$(echo "$PRESP" | jq -r '.data.status // "UNKNOWN"') echo "[4/4] $STATUS" >&2 if [[ "$STATUS" == "COMPLETED" ]]; then echo "$PRESP" | jq -r '.data.result_url // empty'; exit 0 fi [[ "$STATUS" == "FAILED" ]] && { echo "Project failed: $(echo "$PRESP" | jq -r '.data.error')" >&2; exit 4; } (( $(date +%s) - T0 >= WORKFLOW_TIMEOUT )) && { echo "Timeout. Check manually: project_id=$PROJECT_ID" >&2; exit 3; } done AI Edit example — intelligent vertical reformat of a talking-head video: RESULT_URL=$(bash scripts/edit_video.sh interview.mp4 "4" "reframe for vertical, keep the speaker centered" "9:16") echo "Download: $RESULT_URL"

Error Reference

ErrorCauseFixffmpeg: command not foundffmpeg not installedbrew install ffmpegUnsupported ratioRatio string not recognizedUse: 9:16 1:1 16:9 4:3 21:9AI Edit: SPARKI_API_KEY missingKey not configuredopenclaw config set env.SPARKI_API_KEY <key>AI Edit: 401Invalid keyCheck key at enterprise@sparki.io

Category context

Code helpers, APIs, CLIs, browser automation, testing, and developer operations.

Source: Tencent SkillHub

Largest current source with strong distribution and engagement signals.

Package contents

Included in package
1 Docs1 Scripts
  • SKILL.md Primary doc
  • scripts/resize.sh Scripts