菜单
Converts webm/mp4 video files to optimized GIFs via ffmpeg with configurable quality settings. Use when post-processing recordings into shareable GIFs.
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
决定是否安装前，请先阅读 SKILL.md，以及 SkillsMP 当前展示的配套文件。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/athola/claude-night-market --skill gif-generation命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
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基于 SOC 职业分类
正在显示 SKILL.md
| name | gif-generation |
| description | Converts webm/mp4 video files to optimized GIFs via ffmpeg with configurable quality settings. Use when post-processing recordings into shareable GIFs. |
| alwaysApply | false |
| category | media-generation |
| tags | ["gif","ffmpeg","video","conversion","optimization"] |
| tools | [] |
| complexity | low |
| model_hint | fast |
| estimated_tokens | 400 |
| progressive_loading | false |
Post-process video files (webm/mp4) and generate optimized GIF output with configurable quality settings.
This skill handles the conversion of video recordings (typically from browser automation) to GIF format. It provides multiple quality presets and optimization options to balance file size with visual quality.
- Validate input video file exists
- Check ffmpeg installation
- Execute GIF conversion
- Verify output and report results
Verification: Run the command with --help flag to verify availability.
Confirm the source video file exists and is a supported format:
# Check file exists and get info
if [[ -f "$INPUT_FILE" ]];
file
ffprobe -v quiet -show_format -show_streams 2>/dev/null | -20
1
Verification: Run the command with --help flag to verify availability.
Supported input formats: .webm, .mp4, .mov, .avi
Verify ffmpeg is available:
if ! command -v ffmpeg &> /dev/null; then
echo "Error: ffmpeg is not installed"
echo "Install with: sudo apt install ffmpeg (Linux) or brew install ffmpeg (macOS)"
exit 1
fi
ffmpeg -version | head -1
Verification: Run the command with --help flag to verify availability.
Choose the appropriate conversion command based on quality requirements:
ffmpeg -i input.webm -vf "fps=10,scale=800:-1" output.gif
Verification: Run the command with --help flag to verify availability.
ffmpeg -i input.webm -vf "fps=10,scale=800:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" output.gif
Verification: Run the command with --help flag to verify availability.
ffmpeg -i input.webm -vf "fps=15,scale=1024:-1:flags=lanczos,split[s0][s1];[s0]palettegen=max_colors=256:stats_mode=single[p];[s1][p]paletteuse=dither=bayer:bayer_scale=5" output.gif
Verification: Run the command with --help flag to verify availability.
| Option | Description | Recommended Value |
|---|---|---|
fps | Frames per second | 10-15 for smooth, 5-8 for smaller files |
scale | Width in pixels (-1 maintains aspect ratio) | 800 for web, 480 for thumbnails |
flags=lanczos | High-quality scaling algorithm | Always use for best quality |
palettegen | Generate optimized color palette | Use for quality-critical output |
dither | Dithering algorithm | bayer for patterns, floyd_steinberg for smooth |
# Thumbnail (small, fast loading)
ffmpeg -i input.webm -vf "fps=8,scale=480:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" thumbnail.gif
# Documentation (balanced)
ffmpeg -i input.webm -vf "fps=10,scale=800:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" docs.gif
# High-fidelity demo
ffmpeg -i input.webm -vf "fps=15,scale=1024:-1:flags=lanczos,split[s0][s1];[s0]palettegen=max_colors=256[p];[s1][p]paletteuse" demo.gif
Verification: Run the command with --help flag to verify availability.
Confirm successful conversion and report metrics:
if [[ -f "$OUTPUT_FILE" ]]; then
echo "GIF generated successfully: $OUTPUT_FILE"
# Report file size
SIZE=$(du -h "$OUTPUT_FILE" | cut -f1)
echo "File size: $SIZE"
# Get dimensions and frame count
ffprobe -v quiet -select_streams v:0 -show_entries stream=width,height,nb_frames -of csv=p=0 "$OUTPUT_FILE"
else
echo "Error: GIF generation failed"
exit 1
fi
Verification: Run the command with --help flag to verify availability.
Reduce quality settings:
# Lower fps and resolution
ffmpeg -i input.webm -vf "fps=8,scale=640:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" smaller.gif
Verification: Run the command with --help flag to verify availability.
Use dithering:
ffmpeg -i input.webm -vf "fps=10,scale=800:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse=dither=floyd_steinberg" smooth.gif
Verification: Run the command with --help flag to verify availability.
Use basic conversion without palette generation for speed:
ffmpeg -i input.webm -vf "fps=10,scale=800:-1" quick.gif
Verification: Run the command with --help flag to verify availability.