Requirements
- Target platform
- OpenClaw
- Install method
- Manual import
- Extraction
- Extract archive
- Prerequisites
- OpenClaw
- Primary doc
- SKILL.md
Tencent SkillHub · AI
FFmpeg
Process video and audio with correct codec selection, filtering, and encoding settings.
skill openclawclawhub Free
Process video and audio with correct codec selection, filtering, and encoding settings.
⬇ 0 downloads ★ 0 stars Unverified but indexed
Install for OpenClaw
Quick setup
- Download the package from Yavira.
- Extract the archive and review SKILL.md first.
- Import or place the package into your OpenClaw setup.
Package facts
- Download mode
- Yavira redirect
- Package format
- ZIP package
- Source platform
- Tencent SkillHub
- What's included
- SKILL.md
Validation
- Use the Yavira download entry.
- Review SKILL.md after the package is downloaded.
- Confirm the extracted package contains the expected setup assets.
Install with your agent
Agent handoff
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
New install
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.
Upgrade existing
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.
Trust & source
Release facts
- Source
- Tencent SkillHub
- Verification
- Indexed source record
- Version
- 1.0.0
Provenance
- Publisher
- ivangdavila
- Source page
- View original listing
- Canonical URL
- Open canonical page
Documentation
Input Seeking (Major Difference)
-ss BEFORE -i: fast seek, may be inaccurate—starts from nearest keyframe -ss AFTER -i: frame-accurate but slow—decodes from start Combine both: -ss 00:30:00 -i input.mp4 -ss 00:00:05—fast seek then accurate trim For cutting, add -avoid_negative_ts make_zero to fix timestamp issues
Stream Selection
Default: first video + first audio—may not be what you want Explicit selection: -map 0:v:0 -map 0:a:1—first video, second audio All streams of type: -map 0:a—all audio streams Copy specific: -map 0 -c copy—all streams, no re-encoding Exclude: -map 0 -map -0:s—all except subtitles
Encoding Quality
CRF (Constant Rate Factor): lower = better quality, larger file—18-23 typical for H.264 -preset: ultrafast to veryslow—slower = smaller file at same quality Two-pass for target bitrate: first pass analyzes, second pass encodes -crf and -b:v mutually exclusive—use one or the other
Container vs Codec
Container (MP4, MKV, WebM): wrapper format holding streams Codec (H.264, VP9, AAC): compression algorithm for stream Not all codecs fit all containers—H.264 in MP4/MKV, not WebM; VP9 in WebM/MKV, not MP4 Copy codec to new container: -c copy—fast, no quality loss
Filter Syntax
Simple: -vf "scale=1280:720"—single filter chain Complex: -filter_complex "[0:v]scale=1280:720[scaled]"—named outputs for routing Chain filters: -vf "scale=1280:720,fps=30"—comma-separated Filter order matters—scale before crop gives different result than crop before scale
Common Filters
Scale: scale=1280:720 or scale=-1:720 for auto-width maintaining aspect Crop: crop=640:480:100:50—width:height:x:y from top-left FPS: fps=30—change framerate Trim: trim=start=10:end=20,setpts=PTS-STARTPTS—setpts resets timestamps Overlay: overlay=10:10—position from top-left
Audio Processing
Sample rate: -ar 48000—standard for video Channels: -ac 2—stereo Audio codec: -c:a aac -b:a 192k—AAC at 192kbps Normalize: -filter:a loudnorm—EBU R128 loudness normalization Extract audio: -vn -c:a copy output.m4a—no video, copy audio
Concatenation
Same codec/params: concat demuxer—-f concat -safe 0 -i list.txt -c copy Different formats: concat filter—-filter_complex "[0:v][0:a][1:v][1:a]concat=n=2:v=1:a=1" list.txt format: file 'video1.mp4' per line—escape special characters Different resolutions: scale/pad to match before concat filter
Subtitles
Burn-in (hardcode): -vf "subtitles=subs.srt"—cannot be turned off Mux as stream: -c:s mov_text (MP4) or -c:s srt (MKV)—user toggleable From input: -map 0:s—include subtitle streams Extract: -map 0:s:0 subs.srt—first subtitle to file
Hardware Acceleration
Decode: -hwaccel cuda or -hwaccel videotoolbox (macOS) Encode: -c:v h264_nvenc (NVIDIA), -c:v h264_videotoolbox (macOS) Not always faster—setup overhead; benefits show on long videos Quality may differ—software encoding often produces better quality
Common Mistakes
Forgetting -c copy when not re-encoding—defaults to re-encode, slow and lossy -ss after -i for long videos—takes forever seeking Audio desync after cutting—use -async 1 or -af aresample=async=1 Filter on stream copy—filters require re-encoding; -c copy + -vf = error Output extension doesn't set codec—output.mp4 without -c:v uses default, may not be H.264
Category context
Agent frameworks, memory systems, reasoning layers, and model-native orchestration.
Source: Tencent SkillHub
Largest current source with strong distribution and engagement signals.
Package contents
Included in package
1 Docs
- SKILL.md