Ffmpeg Cut Concat

Context: $ARGUMENTS

Quick start

• Fast trim (keyframe-aligned): → Step 1 → trim mode with -c copy
• Frame-accurate trim: → Step 1 → trim mode, re-encode (--accurate)
• Split one file into N pieces: → Step 1 → segment mode
• Join same-codec files: → Step 1 → concat-copy mode
• Join different-codec files: → Step 1 → concat-filter mode

When to use

• Extracting a clip between two timestamps (e.g. 00:01:30 to 00:02:00).
• Splitting a long file into N-second chunks (podcast, HLS prep).
• Joining multiple recordings end-to-end.
• Removing the first/last N seconds of a video.
• Building a highlight reel from several source files.