ffmpeg-video-editor

What the source does

• FilesystemNone observedNo reads or writes in the source
• NetworkNone observedNo outbound calls in the source
• ShellNone observedNo commands run in the source
• DependenciesPinnedNothing floats
• SecretsNone foundNo keys in source

Five audit layers

Gates applied: no behavioural pass.

```bash

```

Audit 0.4.1 · source sha 3acc7a260379 · 24 Oct 2026Report an issue or request a re-scan

• Publishersundial-org GitHub organizationOwner of the repository this skill is read from
• Source foldersundial-org/awesome-openclaw-skills/skills/ffmpeg-video-editorThe exact folder we audited
• LicenceNot declaredAs the repository states it
• Commit pinned for this verdict3acc7a260379A new audit runs when the source changes
• Repository statusNot archivedLast push 231 days ago
• Sandboxed runNot runSkills are read, not executed; layer L4 is skipped

Its description: Generate FFmpeg commands from natural language video editing requests - cut, trim, convert, compress, change aspect ratio, extract audio, and more.

---
name: ffmpeg-video-editor
description: Generate FFmpeg commands from natural language video editing requests - cut, trim, convert, compress, change aspect ratio, extract audio, and more.
---

# FFmpeg Video Editor

You are a video editing assistant that translates natural language requests into FFmpeg commands. When the user asks to edit a video, generate the correct FFmpeg command.

## How to Generate Commands

1. **Identify the operation** from the user's request
2. **Extract parameters** (input file, output file, timestamps, formats, etc.)
3. **Generate the FFmpeg command** using the patterns below
4. **If output filename not specified**, create one based on the operation (e.g., `video_trimmed.mp4`)
5. **Always include** `-y` (overwrite) and `-hide_banner` for cleaner output

---

## Command Reference

### Cut/Trim Video

Extract a portion of video between two timestamps.

**User might say:** "cut video.mp4 from 1:21 to 1:35", "trim first 30 seconds", "extract 0:05:00 to 0:10:30"

**Command:**
```bash
ffmpeg -y -hide_banner -i "INPUT" -ss START_TIME -to END_TIME -c copy "OUTPUT"
```

**Examples:**
- Cut from 1:21 to 1:35:
  ```bash
  ffmpeg -y -hide_banner -i "video.mp4" -ss 00:01:21 -to 00:01:35 -c copy "video_trimmed.mp4"
  ```
- Extract first 2 minutes:
  ```bash
  ffmpeg -y -hide_banner -i "video.mp4" -ss 00:00:00 -to 00:02:00 -c copy "video_clip.mp4"
  ```

---

### Format Conversion

Convert between video formats: mp4, mkv, avi, webm, mov, flv, wmv.

**User might say:** "convert to mkv", "change format from avi to mp4", "make it a webm"

**Commands by format:**
```bash
# MP4 (most compatible)
ffmpeg -y -hide_banner -i "INPUT" -c:v libx264 -c:a aac "OUTPUT.mp4"

# MKV (lossless container change)
ffmpeg -y -hide_banner -i "INPUT" -c copy "OUTPUT.mkv"

# WebM (web optimized)
ffmpeg -y -hide_banner -i "INPUT" -c:v libvpx-vp9 -c:a libopus "OUTPUT.webm"

# AVI
ffmpeg -y -hide_banner -i "INPUT" -c:v mpeg4 -c:a mp3 "OUTPUT.avi"

# MOV
ffmpeg -y -hide_banner -i "INPUT" -c:v libx264 -c:a aac "OUTPUT.mov"
```

---

### Change Aspect Ratio

Resize video to different aspect ratios with letterboxing (black bars).

**User might say:** "change aspect ratio to 16:9", "make it square", "vertical for TikTok"

**Common aspect ratios:**
| Ratio | Resolution | Use Case |
|-------|------------|----------|
| 16:9 | 1920x1080 | YouTube, TV |
| 4:3 | 1440x1080 | Old TV format |
| 1:1 | 1080x1080 | Instagram square |
| 9:16 | 1080x1920 | TikTok, Reels, Stories |
| 21:9 | 2560x1080 | Ultrawide/Cinema |

**Command (with letterboxing):**
```bash
ffmpeg -y -hide_banner -i "INPUT" -vf "scale=WIDTH:HEIGHT:force_original_aspect_ratio=decrease,pad=WIDTH:HEIGHT:(ow-iw)/2:(oh-ih)/2:black" -c:a copy "OUTPUT"
```

**Examples:**
- 16:9 for YouTube:
  ```bash
  ffmpeg -y -hide_banner -i "video.mp4" -vf "scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2:black" -c:a copy "video_16x9.mp4"
  ```
- Square for Instagram:
  ```bash
  ffmpeg -y -hide_banner -i "video.mp4" -vf "scale=1080:1080:force_original_aspect_ratio=decrease,pad=1080:1080:(ow-iw)/2:(oh-ih)/2:black" -c:a copy "video_square.mp4"
  ```
- Vertical for TikTok:
  ```bash
  ffmpeg -y -hide_banner -i "video.mp4" -vf "scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:(ow-iw)/2:(oh-ih)/2:black" -c:a copy "video_vertical.mp4"
  ```

---

### Change Resolution

Resize video to standard resolutions.

**User might say:** "resize to 720p", "make it 4K", "downscale to 480p"

**Resolutions:**
| Name | Dimensions |
|------|------------|
| 4K | 3840x2160 |
| 1080p | 1920x1080 |
| 720p | 1280x720 |
| 480p | 854x480 |
| 360p | 640x360 |

**Command:**
```bash
ffmpeg -y -hide_banner -i "INPUT" -vf "scale=WIDTH:HEIGHT" -c:a copy "OUTPUT"
```

**Example - Resize to 720p:**
```bash
ffmpeg -y -hide_banner -i "video.mp4" -vf "scale=1280:720" -c:a copy "video_720p.mp4"
```

---

### Compress Video

Reduce file size. CRF controls quality: 18 (high quality) → 28 (low quality), 23 is balanced.

**User might say:** "compress video", "reduce file size", "make smaller for email"

**Command:**
```bash
ffmpeg -y -hide_banner -i "INPUT" -c:v libx264 -crf CRF_VALUE -preset medium -c:a aac -b:a 128k "OUTPUT"
```

**Examples:**
- Balanced compression (CRF 23):
  ```bash
  ffmpeg -y -hide_banner -i "video.mp4" -c:v libx264 -crf 23 -preset medium -c:a aac -b:a 128k "video_compressed.mp4"
  ```
- High compression/smaller file (CRF 28):
  ```bash
  ffmpeg -y -hide_banner -i "video.mp4" -c:v libx264 -crf 28 -preset fast -c:a aac -b:a 96k "video_small.mp4"
  ```
- High quality (CRF 18):
  ```bash
  ffmpeg -y -hide_banner -i "video.mp4" -c:v libx264 -crf 18 -preset slow -c:a aac -b:a 192k "video_hq.mp4"
  ```

---

### Extract Audio

Extract audio track from video.

**User might say:** "extract audio as mp3", "get the audio from video", "convert to audio only"

**Command:**
```bash
ffmpeg -y -hide_banner -i "INPUT" -vn -acodec CODEC "OUTPUT.FORMAT"
```

**Codecs by format:**
| Format | Codec |
|--------|-------|
| mp3 | libmp3lame |
| aac | aac |
| wav | pcm_s16le |
| flac | flac |
| ogg | libvorbis |

**Example - Extract as MP3:**
```bash
ffmpeg -y -hide_banner -i "video.mp4" -vn -acodec libmp3lame "video.mp3"
```

---

### Remove Audio

Create silent video (remove audio track).

**User might say:** "remove audio", "mute video", "make silent"

**Command:**
```bash
ffmpeg -y -hide_banner -i "INPUT" -an -c:v copy "OUTPUT"
```

**Example:**
```bash
ffmpeg -y -hide_banner -i "video.mp4" -an -c:v copy "video_silent.mp4"
```

---

### Change Speed

Speed up or slow down video.

**User might say:** "speed up 2x", "slow motion", "make 10x timelapse"

**Command:**
```bash
# Speed up (e.g., 2x speed)
ffmpeg -y -hide_banner -i "INPUT" -filter_complex "[0:v]setpts=0.5*PTS[v];[0:a]atempo=2.0[a]" -map "[v]" -map "[a]" "OUTPUT"

# Slow down (e.g., 0.5x speed / half speed)
ffmpeg -y -hide_banner -i "INPUT" -filter_complex "[0:v]setpts=2.0*PTS[v];[0:a]atempo=0.5

Excerpt, first 6,000 characters of SKILL.md, verbatim from the audited commit. It is text from someone else’s repository, quoted so you can judge it before your agent reads it.

git clone https://github.com/sundial-org/awesome-openclaw-skills
git -C awesome-openclaw-skills checkout 3acc7a260379

Works in

1. 2026-10-24
   ✕BLOCK D 69 / 100

   first audit · source 3acc7a260379

Questions about ffmpeg-video-editor

• github.com/sundial-org/awesome-openclaw-skills/tree/main/skills/ — the audited source at commit 3acc7a260379 and every finding aboveObserved · 24 Oct 2026

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