Convert, encode, extract, and stream audio and video with FFmpeg.
npx skills add https://github.com/levanminhduc/LuongHoaThoNew --skill ffmpeg-levanminhduc
Please help me install this Agent Skill. Skill: ffmpeg Source: https://github.com/levanminhduc/LuongHoaThoNew/tree/main/.claude/skills/ffmpeg Command: npx skills add https://github.com/levanminhduc/LuongHoaThoNew --skill ffmpeg-levanminhduc
FFmpeg is a comprehensive toolkit for encoding, decoding, converting, streaming, and filtering multimedia content. This Skill guides you through common tasks like format conversion, codec selection, audio extraction, streaming, and batch processing.
Example: convert a video from MKV to MP4 using copy and then encode to H.264: ffmpeg -i input.mkv -c copy output.mkv
High-intent search queries and answers about installing and using this skill.
Video format conversion with FFmpeg uses the -i input flag and output format specification. FFmpeg automatically selects codecs based on the container, or you can explicitly set them with -c:v for video and -c:a for audio. Stream copying with -c copy preserves quality when codec compatibility allows.
FFmpeg's Constant Rate Factor (CRF) method controls quality-to-size tradeoff without setting a fixed bitrate. Lower CRF values (0–28) produce higher quality; typical range is 18–28. Combine CRF with preset options (ultrafast to veryslow) to trade encoding speed for compression efficiency.
Audio extraction isolates the audio stream from video using FFmpeg's stream selection and output flags. Specify -c:a to choose an audio codec and -vn to skip video, then set the output format (MP3, AAC, FLAC). Stream copy with -c:a copy preserves the original audio without re-encoding.
FFmpeg supports RTMP streaming to push live content and HLS/DASH output for adaptive bitrate delivery. Use -f rtmp to stream to a server, or -f hls/-f dash to segment video into manifests and chunks. Configure segment duration, bitrate, and resolution for each quality tier.
FFmpeg's filter graph syntax chains transformations like scaling, cropping, and effects. Use -filter:v for video filters (e.g., scale=1280:720, trim=start=10:end=60) and -filter:a for audio. Complex filter graphs combine multiple operations in a single pass to reduce file I/O.
Batch processing loops FFmpeg commands over file lists using shell scripts or automation tools. Iterate through input files, apply consistent encoding settings (codec, CRF, filters), and output to a target directory. Two-pass encoding improves efficiency for multiple files by analyzing bitrate distribution first.
LeooooooowConvert video files to MP4/H.264 or WebM/VP9 with optimized bitrate and resolution.
duylinhdang1998Generate per-title bitrate ladders and package HLS, DASH, and CMAF streams.
JohanBlomeAutomate video encoder and decoder testing on Android devices with adb and ffmpeg.
kevinnguyen271090Encode, convert, and optimize video, audio, and image assets with FFmpeg and ImageMagick.
