video-download
使用yt-dlp直接从URL下载视频和音频,支持合并流、提取音轨,无需额外脚本包装
npx skills add heygen-com/skills --skill video-downloadBefore / After 效果对比
1 组使用在线工具下载视频需要等待广告、限制分辨率,且无法批量处理,下载10个视频需要1小时
命令行一键下载高清视频,自动合并音视频流,支持批量并发下载,10个视频15分钟完成
description SKILL.md
video-download
video-download
Download video and audio from URLs using yt-dlp directly. No wrapper scripts needed.
Prerequisites
-
yt-dlp:
brew install yt-dlporpip install yt-dlp -
ffmpeg:
brew install ffmpegorapt install ffmpeg(required for merging video+audio streams)
Update yt-dlp periodically to keep up with site changes: yt-dlp -U or pip install -U yt-dlp.
Commands
Download best quality
yt-dlp "URL" -o "%(title)s.%(ext)s" --merge-output-format mp4
Download specific resolution
# 720p
yt-dlp "URL" -f "bestvideo[height<=720]+bestaudio/best[height<=720]" --merge-output-format mp4
# 1080p
yt-dlp "URL" -f "bestvideo[height<=1080]+bestaudio/best[height<=1080]" --merge-output-format mp4
Audio only
yt-dlp "URL" -x --audio-format mp3 --audio-quality 0
Download subtitles
# Download video with English subtitles
yt-dlp "URL" --write-subs --sub-langs en --merge-output-format mp4
# Download video with multiple subtitle languages
yt-dlp "URL" --write-subs --sub-langs "en,es,fr" --merge-output-format mp4
# Download only subtitles (no video)
yt-dlp "URL" --write-subs --sub-langs en --skip-download
Get metadata (no download)
yt-dlp "URL" --dump-json --no-download
List available formats
yt-dlp "URL" -F
Specify output directory
yt-dlp "URL" -o "./downloads/%(title)s.%(ext)s" --merge-output-format mp4
Quality Presets
Quality Format flag
Best
-f "bestvideo+bestaudio/best" (default)
1080p
-f "bestvideo[height<=1080]+bestaudio/best[height<=1080]"
720p
-f "bestvideo[height<=720]+bestaudio/best[height<=720]"
480p
-f "bestvideo[height<=480]+bestaudio/best[height<=480]"
Worst
-f "worstvideo+worstaudio/worst"
Output Template Variables
Common variables for -o templates:
Variable Description
%(title)s
Video title
%(ext)s
File extension
%(id)s
Video ID
%(uploader)s
Channel/uploader name
%(upload_date)s
Upload date (YYYYMMDD)
%(duration)s
Duration in seconds
%(resolution)s
Video resolution
Tips
-
Always use
--merge-output-format mp4to avoid ending up with.webmor.mkvfiles. -
Use
--no-downloadwith--dump-jsonfor metadata-only queries -- no files written to disk. -
If a download fails with HTTP errors, update yt-dlp first (
yt-dlp -U). -
Use
-f "bestvideo[height<=720]+bestaudio"to save bandwidth when full resolution is not needed. -
yt-dlp automatically handles rate limiting and retries.
-
The
--dump-jsonoutput includestitle,duration,uploader,view_count,description,formats,subtitles, and much more.
Troubleshooting
-
"yt-dlp: command not found": Install it (
pip install yt-dlp) and ensure your PATH includes pip's bin directory. -
"ffmpeg: command not found": Install ffmpeg. Without it, downloads fail when video and audio are separate streams (common on YouTube for HD).
-
Downloads fail or return errors: Run
yt-dlp -Uto update. Sites change frequently and yt-dlp ships fixes regularly.
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