🎁 Get the FREE AI Skills Starter Guide β€” Subscribe β†’
BytesAgainBytesAgain
BytesAgain β€Ί Skills β€Ί Add Music To Video Online
πŸ¦€ ClawHub

Add Music To Video Online

by @mhogan2013-9

Turn a 2-minute vacation video clip into 1080p music-backed videos just by typing what you need. Whether it's adding background music to personal or social m...

Versionv1.0.0
Downloads252
#clawhub
TERMINAL
clawhub install add-music-to-video-online

πŸ“– About This Skill

name: add-music-to-video-online version: "1.0.0" displayName: "Add Music to Video Online β€” Merge Music and Export Video" description: > Turn a 2-minute vacation video clip into 1080p music-backed videos just by typing what you need. Whether it's adding background music to personal or social media videos or quick social content, drop your video clips and describe the result you want. No timeline dragging, no export settings β€” 20-40 seconds from upload to download. metadata: {"openclaw": {"emoji": "🎡", "requires": {"env": ["NEMO_TOKEN"], "configPaths": ["~/.config/nemovideo/"]}, "primaryEnv": "NEMO_TOKEN", "variant": "short_prompts"}}

Getting Started

> Share your video clips and I'll get started on audio track merging. Or just tell me what you're thinking.

Try saying:

  • "add my video clips"
  • "export 1080p MP4"
  • "add background music to my video"

    • Getting Connected

    Before handling any user request, establish a connection to the backend API. Show a brief status like "Connecting...".

    If NEMO_TOKEN is in the environment, use it directly and create a session. Otherwise, acquire a free starter token:

  • Generate a UUID as client identifier
  • POST to https://mega-api-prod.nemovideo.ai/api/auth/anonymous-token with the X-Client-Id header
  • The response includes a token with 100 free credits valid for 7 days β€” use it as NEMO_TOKEN

    • Then create a session by POSTing to https://mega-api-prod.nemovideo.ai/api/tasks/me/with-session/nemo_agent with Bearer authorization and body {"task_name":"project","language":"en"}. The session_id in the response is needed for all following requests.

    Tell the user you're ready. Keep the technical details out of the chat.

    Add Music to Video Online β€” Merge Music and Export Video

    Send me your video clips and describe the result you want. The audio track merging runs on remote GPU nodes β€” nothing to install on your machine.

    A quick example: upload a 2-minute vacation video clip, type "add background music to my video and fade it out at the end", and you'll get a 1080p MP4 back in roughly 20-40 seconds. All rendering happens server-side.

    Worth noting: trim your audio track to match the video length before uploading for cleaner results.

    Matching Input to Actions

    User prompts referencing add music to video online, aspect ratio, text overlays, or audio tracks get routed to the corresponding action via keyword and intent classification.

    | User says... | Action | Skip SSE? | |-------------|--------|----------| | "export" / "ε―Όε‡Ί" / "download" / "send me the video" | β†’ Β§3.5 Export | βœ… | | "credits" / "η§―εˆ†" / "balance" / "余钝" | β†’ Β§3.3 Credits | βœ… | | "status" / "ηŠΆζ€" / "show tracks" | β†’ Β§3.4 State | βœ… | | "upload" / "上传" / user sends file | β†’ Β§3.2 Upload | βœ… | | Everything else (generate, edit, add BGM…) | β†’ Β§3.1 SSE | ❌ |

    Cloud Render Pipeline Details

    Each export job queues on a cloud GPU node that composites video layers, applies platform-spec compression (H.264, up to 1080x1920), and returns a download URL within 30-90 seconds. The session token carries render job IDs, so closing the tab before completion orphans the job.

    Base URL: https://mega-api-prod.nemovideo.ai

    | Endpoint | Method | Purpose | |----------|--------|---------| | /api/tasks/me/with-session/nemo_agent | POST | Start a new editing session. Body: {"task_name":"project","language":""}. Returns session_id. | | /run_sse | POST | Send a user message. Body includes app_name, session_id, new_message. Stream response with Accept: text/event-stream. Timeout: 15 min. | | /api/upload-video/nemo_agent/me/ | POST | Upload a file (multipart) or URL. | | /api/credits/balance/simple | GET | Check remaining credits (available, frozen, total). | | /api/state/nemo_agent/me//latest | GET | Fetch current timeline state (draft, video_infos, generated_media). | | /api/render/proxy/lambda | POST | Start export. Body: {"id":"render_","sessionId":"","draft":,"output":{"format":"mp4","quality":"high"}}. Poll status every 30s. |

    Accepted file types: mp4, mov, avi, webm, mkv, jpg, png, gif, webp, mp3, wav, m4a, aac.

    Skill attribution β€” read from this file's YAML frontmatter at runtime:

  • X-Skill-Source: add-music-to-video-online
  • X-Skill-Version: from frontmatter version
  • X-Skill-Platform: detect from install path (~/.clawhub/ β†’ clawhub, ~/.cursor/skills/ β†’ cursor, else unknown)

    • All requests must include: Authorization: Bearer , X-Skill-Source, X-Skill-Version, X-Skill-Platform. Missing attribution headers will cause export to fail with 402.

    Error Handling

    | Code | Meaning | Action | |------|---------|--------| | 0 | Success | Continue | | 1001 | Bad/expired token | Re-auth via anonymous-token (tokens expire after 7 days) | | 1002 | Session not found | New session Β§3.0 | | 2001 | No credits | Anonymous: show registration URL with ?bind= (get from create-session or state response when needed). Registered: "Top up credits in your account" | | 4001 | Unsupported file | Show supported formats | | 4002 | File too large | Suggest compress/trim | | 400 | Missing X-Client-Id | Generate Client-Id and retry (see Β§1) | | 402 | Free plan export blocked | Subscription tier issue, NOT credits. "Register or upgrade your plan to unlock export." | | 429 | Rate limit (1 token/client/7 days) | Retry in 30s once |

    Reading the SSE Stream

    Text events go straight to the user (after GUI translation). Tool calls stay internal. Heartbeats and empty data: lines mean the backend is still working β€” show "⏳ Still working..." every 2 minutes.

    About 30% of edit operations close the stream without any text. When that happens, poll /api/state to confirm the timeline changed, then tell the user what was updated.

    Translating GUI Instructions

    The backend responds as if there's a visual interface. Map its instructions to API calls:

  • "click" or "点击" β†’ execute the action via the relevant endpoint
  • "open" or "打开" β†’ query session state to get the data
  • "drag/drop" or "ζ‹–ζ‹½" β†’ send the edit command through SSE
  • "preview in timeline" β†’ show a text summary of current tracks
  • "Export" or "ε―Όε‡Ί" β†’ run the export workflow

    • Draft field mapping: t=tracks, tt=track type (0=video, 1=audio, 7=text), sg=segments, d=duration(ms), m=metadata.

    Timeline (3 tracks): 1. Video: city timelapse (0-10s) 2. BGM: Lo-fi (0-10s, 35%) 3. Title: "Urban Dreams" (0-3s)

    Tips and Tricks

    The backend processes faster when you're specific. Instead of "make it look better", try "add background music to my video and fade it out at the end" β€” concrete instructions get better results.

    Max file size is 500MB. Stick to MP4, MOV, AVI, WebM for the smoothest experience.

    Export as MP4 for widest compatibility across social platforms.

    Common Workflows

    Quick edit: Upload β†’ "add background music to my video and fade it out at the end" β†’ Download MP4. Takes 20-40 seconds for a 30-second clip.

    Batch style: Upload multiple files in one session. Process them one by one with different instructions. Each gets its own render.

    Iterative: Start with a rough cut, preview the result, then refine. The session keeps your timeline state so you can keep tweaking.

    πŸ’‘ Examples

    > Share your video clips and I'll get started on audio track merging. Or just tell me what you're thinking.

    Try saying:

  • "add my video clips"
  • "export 1080p MP4"
  • "add background music to my video"

    • Getting Connected

    Before handling any user request, establish a connection to the backend API. Show a brief status like "Connecting...".

    If NEMO_TOKEN is in the environment, use it directly and create a session. Otherwise, acquire a free starter token:

  • Generate a UUID as client identifier
  • POST to https://mega-api-prod.nemovideo.ai/api/auth/anonymous-token with the X-Client-Id header
  • The response includes a token with 100 free credits valid for 7 days β€” use it as NEMO_TOKEN

    • Then create a session by POSTing to https://mega-api-prod.nemovideo.ai/api/tasks/me/with-session/nemo_agent with Bearer authorization and body {"task_name":"project","language":"en"}. The session_id in the response is needed for all following requests.

    Tell the user you're ready. Keep the technical details out of the chat.

    Add Music to Video Online β€” Merge Music and Export Video

    Send me your video clips and describe the result you want. The audio track merging runs on remote GPU nodes β€” nothing to install on your machine.

    A quick example: upload a 2-minute vacation video clip, type "add background music to my video and fade it out at the end", and you'll get a 1080p MP4 back in roughly 20-40 seconds. All rendering happens server-side.

    Worth noting: trim your audio track to match the video length before uploading for cleaner results.