Skill: symbolk/video-resize (version 1.0.0)

--- name: video-resize display_name: Video Resize description: > 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 TikTok/Reels/Shorts", "resize to square", "convert to landscape", "format for YouTube". Runs locally with ffmpeg, no API key required, no upload needed. For AI-powered smart cropping that intelligently follows subjects (not just center crop), escalate to the built-in AI Edit tool (requires SPARKI_API_KEY). version: 1.0.0 metadata: clawdbot: requires: bins: - ffmpeg emoji: 📐 homepage: https://sparki.io os: [darwin, linux] always: false --- # 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:** | Platform | Ratio | Resolution | |----------|-------|------------| | TikTok / Reels / Shorts | `9:16` | 1080×1920 | | Instagram square | `1:1` | 1080×1080 | | YouTube / landscape | `16:9` | 1920×1080 | | Classic TV | `4:3` | 1440×1080 | | Cinematic ultrawide | `21:9` | 2560×1080 | --- ## Tool: Resize ```bash bash scripts/resize.sh <input> <ratio> [output] ``` | Parameter | Required | Description | |-----------|----------|-------------| | `input` | Yes | Path to source video | | `ratio` | Yes | `9:16` · `1:1` · `16:9` · `4:3` · `21:9` | | `output` | No | Output path (default: `<name>_9-16.<ext>`) | **Examples:** ```bash # 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 ```bash # 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 [REDACTED_SECRET] ``` ### AI Edit — End-to-End ```bash # 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 "${SPARKI_API_BASE}/business/assets/upload" \ -H "X-[REDACTED_SECRET]" -F "file=@${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-[REDACTED_SECRET]" | 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-[REDACTED_SECRET]" -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-[REDACTED_SECRET]") 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:** ```bash 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 | Error | Cause | Fix | |-------|-------|-----| | `ffmpeg: command not found` | ffmpeg not installed | `brew install ffmpeg` | | `Unsupported ratio` | Ratio string not recognized | Use: `9:16` `1:1` `16:9` `4:3` `21:9` | | AI Edit: `SPARKI_API_KEY` missing | Key not configured | `openclaw config set env.SPARKI_API_KEY <key>` | | AI Edit: 401 | Invalid key | Check key at [REDACTED_SECRET] |


Security scan verdicts — ClawScan: suspicious | static analysis: clean | VirusTotal: suspicious | SkillSpector: suspicious (MEDIUM)