Tag: #video-editing
4 articles
Add Background Music with FFmpeg ? amix BGM Guide
How to add BGM to a video with FFmpeg. Covers amix mixing, volume balance, length adjustment (apad/aloop), fade in/out, and auto-ducking with copy-paste commands and primary sources.
Change Video Speed with FFmpeg ? Audio Sync Guide
Speed up or slow down video with FFmpeg using setpts and atempo. Covers 0.25x–10x ratios, audio-sync without drift, pitch-preserving rubberband, variable-speed sections, and smooth slow-mo via minterpolate.
Remove Black Bars with FFmpeg ? cropdetect Guide
Auto-detect black bars with FFmpeg cropdetect, then strip them with the crop filter. Covers letterbox, pillarbox, even-dimension fixes, non-pure-black bars, and the reverse pad workflow.
FFmpeg: Lossless Concatenation with the concat Demuxer
Concatenate multiple video files losslessly using FFmpeg's concat demuxer. Learn how to build concat.txt, the same-codec requirement, audio concatenation, and integrity checks — with links to primary sources.