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video-processing

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Chinese

Video Processing

视频处理

Automate repetitive video editing tasks using FFmpeg - the industry-standard tool powering YouTube, Netflix, and most video platforms.
使用FFmpeg自动化完成重复的视频编辑任务——FFmpeg是支撑YouTube、Netflix及大多数视频平台的行业标准工具。

When to Use This Skill

何时使用该技能

  • Social media optimization - Resize videos for Instagram (9:16), TikTok, LinkedIn
  • Upload preparation - Compress large videos to meet platform limits
  • Audio extraction - Pull audio from webinars, interviews for podcasts
  • Content clipping - Extract highlights, quotes, or segments
  • Batch processing - Apply same operations to multiple videos
  • 社交媒体优化 - 调整视频尺寸以适配Instagram（9:16）、TikTok、LinkedIn
  • 上传准备 - 压缩大视频以满足平台限制
  • 音频提取 - 从网络研讨会、访谈视频中提取音频用于播客
  • 内容剪辑 - 提取精彩片段、语录或特定段落
  • 批量处理 - 对多个视频应用相同操作

What Claude Does vs What You Decide

Claude的职责与你的决策

Claude DoesYou Decide
Structures production workflowFinal creative direction
Suggests technical approachesEquipment and tool choices
Creates templates and checklistsQuality standards
Identifies best practicesBrand/voice decisions
Generates script outlinesFinal script approval
Claude负责由你决定
构建生产工作流最终创意方向
提出技术方案设备与工具选择
创建模板和检查清单质量标准
识别最佳实践品牌/风格决策
生成脚本大纲最终脚本审批

Dependencies

依赖项

bash
pip install ffmpeg-python moviepy click
bash
pip install ffmpeg-python moviepy click

Also requires ffmpeg installed on system

同时需要在系统上安装ffmpeg

macOS: brew install ffmpeg

macOS: brew install ffmpeg

Ubuntu: sudo apt install ffmpeg

Ubuntu: sudo apt install ffmpeg

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Commands

命令

Compress Video

压缩视频

bash
python scripts/main.py compress video.mp4 --target-mb 10
python scripts/main.py compress video.mp4 --crf 28 --output compressed.mp4
bash
python scripts/main.py compress video.mp4 --target-mb 10
python scripts/main.py compress video.mp4 --crf 28 --output compressed.mp4

Extract Audio

提取音频

bash
python scripts/main.py extract-audio video.mp4 --format mp3
python scripts/main.py extract-audio video.mp4 --format wav --output audio.wav
bash
python scripts/main.py extract-audio video.mp4 --format mp3
python scripts/main.py extract-audio video.mp4 --format wav --output audio.wav

Resize for Social

调整尺寸适配社交平台

bash
python scripts/main.py resize video.mp4 --format instagram  # 1080x1920 (9:16)
python scripts/main.py resize video.mp4 --format youtube    # 1920x1080 (16:9)
python scripts/main.py resize video.mp4 --format square     # 1080x1080 (1:1)
python scripts/main.py resize video.mp4 --width 1280 --height 720
bash
python scripts/main.py resize video.mp4 --format instagram  # 1080x1920 (9:16)
python scripts/main.py resize video.mp4 --format youtube    # 1920x1080 (16:9)
python scripts/main.py resize video.mp4 --format square     # 1080x1080 (1:1)
python scripts/main.py resize video.mp4 --width 1280 --height 720

Clip Segment

剪辑片段

bash
python scripts/main.py clip video.mp4 --start 00:30 --end 01:45
python scripts/main.py clip video.mp4 --start 00:30 --duration 60
bash
python scripts/main.py clip video.mp4 --start 00:30 --end 01:45
python scripts/main.py clip video.mp4 --start 00:30 --duration 60

Merge Videos

合并视频

bash
python scripts/main.py concat video1.mp4 video2.mp4 --output merged.mp4
python scripts/main.py concat ./clips/ --output compilation.mp4
bash
python scripts/main.py concat video1.mp4 video2.mp4 --output merged.mp4
python scripts/main.py concat ./clips/ --output compilation.mp4

Generate Thumbnail

生成缩略图

bash
python scripts/main.py thumbnail video.mp4 --time 00:30
python scripts/main.py thumbnail video.mp4 --best  # Auto-select best frame
bash
python scripts/main.py thumbnail video.mp4 --time 00:30
python scripts/main.py thumbnail video.mp4 --best  # 自动选择最佳帧

Examples

示例

Example 1: Prepare Video for Instagram Reels

示例1：为Instagram Reels准备视频

bash
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Original: 4K horizontal video, 500MB

原视频：4K横屏视频，500MB

python scripts/main.py resize long-video.mp4 --format instagram python scripts/main.py compress long-video_instagram.mp4 --target-mb 50
python scripts/main.py resize long-video.mp4 --format instagram python scripts/main.py compress long-video_instagram.mp4 --target-mb 50

Output: long-video_instagram_compressed.mp4 (1080x1920, <50MB)

输出：long-video_instagram_compressed.mp4 (1080x1920, <50MB)

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Example 2: Extract Podcast from Webinar

示例2：从网络研讨会中提取播客音频

bash
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Extract audio track

提取音轨

python scripts/main.py extract-audio webinar-recording.mp4 --format mp3 --bitrate 192k
python scripts/main.py extract-audio webinar-recording.mp4 --format mp3 --bitrate 192k

Output: webinar-recording.mp3 (ready for podcast hosting)

输出：webinar-recording.mp3（可直接用于播客托管）

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Example 3: Create Highlight Reel

示例3：制作精彩片段合集

bash
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Extract multiple clips

提取多个片段

python scripts/main.py clip interview.mp4 --start 05:30 --end 06:15 --output clip1.mp4 python scripts/main.py clip interview.mp4 --start 12:00 --end 12:45 --output clip2.mp4 python scripts/main.py clip interview.mp4 --start 28:30 --end 29:00 --output clip3.mp4
python scripts/main.py clip interview.mp4 --start 05:30 --end 06:15 --output clip1.mp4 python scripts/main.py clip interview.mp4 --start 12:00 --end 12:45 --output clip2.mp4 python scripts/main.py clip interview.mp4 --start 28:30 --end 29:00 --output clip3.mp4

Merge into highlight reel

合并成精彩片段合集

python scripts/main.py concat clip1.mp4 clip2.mp4 clip3.mp4 --output highlights.mp4
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python scripts/main.py concat clip1.mp4 clip2.mp4 clip3.mp4 --output highlights.mp4
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Social Media Format Reference

社交平台格式参考

PlatformFormatResolutionMax SizeMax Duration
Instagram Reels9:161080x19204GB90s
Instagram Feed1:11080x10804GB60s
TikTok9:161080x1920287MB10min
YouTube Shorts9:161080x1920-60s
YouTube16:91920x1080256GB12h
LinkedIn1:1/16:91920x10805GB10min
Twitter/X16:91920x1080512MB2:20
平台格式分辨率最大文件大小最长时长
Instagram Reels9:161080x19204GB90秒
Instagram Feed1:11080x10804GB60秒
TikTok9:161080x1920287MB10分钟
YouTube Shorts9:161080x1920-60秒
YouTube16:91920x1080256GB12小时
LinkedIn1:1/16:91920x10805GB10分钟
Twitter/X16:91920x1080512MB2分20秒

Performance Tips

性能优化技巧

  1. GPU acceleration - FFmpeg uses hardware encoding when available (NVENC, VideoToolbox)
  2. CRF values - Lower = better quality, larger file. 18-28 typical range
  3. Preset selection - 
    ultrafast
    for drafts, 
    slow
    for final exports
  4. Two-pass encoding - Better quality for target bitrate
  1. GPU加速 - 当硬件支持时，FFmpeg会使用硬件编码（NVENC、VideoToolbox）
  2. CRF值 - 值越小，画质越好，文件越大。常用范围为18-28
  3. 预设选择 - 
    ultrafast
    适用于草稿，
    slow
    适用于最终导出
  4. 双次编码 - 在目标比特率下能获得更好的画质

Skill Boundaries

技能边界

What This Skill Does Well

该技能擅长的工作

  • Structuring audio production workflows
  • Providing technical guidance
  • Creating quality checklists
  • Suggesting creative approaches
  • 构建音频制作工作流
  • 提供技术指导
  • 创建质量检查清单
  • 提出创意方案

What This Skill Cannot Do

该技能无法完成的工作

  • Replace audio engineering expertise
  • Make subjective creative decisions
  • Access or edit audio files directly
  • Guarantee commercial success
  • 替代音频工程专业知识
  • 做出主观创意决策
  • 直接访问或编辑音频文件
  • 保证商业成功

Related Skills

相关技能

  • whisper-transcription - Transcribe video audio
  • youtube-downloader - Download videos to process
  • image-batch - Process video thumbnails
  • whisper-transcription - 转录视频音频
  • youtube-downloader - 下载待处理的视频
  • image-batch - 处理视频缩略图

Skill Metadata

技能元数据

  • Mode: cyborg
yaml
category: automation
subcategory: video-processing
dependencies: [ffmpeg-python, moviepy]
difficulty: beginner
time_saved: 5+ hours/week
  • 模式: cyborg
yaml
category: automation
subcategory: video-processing
dependencies: [ffmpeg-python, moviepy]
difficulty: beginner
time_saved: 5+ hours/week