sort-clips-by

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Bucket a flat folder of media into subfolders by a single attribute. Operates by mv only — files are not transcoded or modified.

Procedure

1. Inputs

Field	Default
Source folder	required
Attribute	required: resolution | aspect | fps | codec | kind
Recursive	no (only files at top level of source)
Mode	preview (dry-run) — flip to commit once user confirms

2. Enumerate files

SRC="$(realpath "$INPUT")"
test -d "$SRC" || { echo "Not a folder: $SRC"; exit 1; }
if [ "$RECURSIVE" = "yes" ]; then
  mapfile -t FILES < <(find "$SRC" -type f -not -path '*/.*')
else
  mapfile -t FILES < <(find "$SRC" -maxdepth 1 -type f -not -name '.*')
fi

3. Classify each file

Use ffprobe for video/image streams; fall back to file --mime-type for non-media (skip those unless attribute is kind).

probe() {
  ffprobe -v error -select_streams v:0 \
    -show_entries stream=width,height,r_frame_rate,codec_name,codec_type \
    -of json "$1" 2>/dev/null
}

Bucket rules:

Attribute	Bucket name
resolution	4K (≥3840w), 1440p (≥2560w), 1080p (≥1920w), 720p (≥1280w), SD (else)
aspect	16x9, 9x16, 1x1, 4x3, 21x9, other (round to nearest standard within 2%)
fps	24fps, 25fps, 30fps, 50fps, 60fps, 120fps, other (snap to nearest standard within 1 fps)
codec	the codec_name verbatim (h264, hevc, prores, etc.)
kind	videos, photos, other (mime-type prefix video/ / image/)

For kind, photos use ffprobe for image dimensions if needed but the bucket is decided by mime-type.

4. Preview

Print a table:

bucket          count   sample file
--------------  ------  --------------------------
4K              12      DJI_0042.MP4
1080p           48      GX010234.MP4
SD              3       handycam_old.AVI

Ask the user: commit? (default no).

5. Commit

for f in "${FILES[@]}"; do
  bucket=$(classify "$f")
  mkdir -p "$SRC/$bucket"
  mv -n "$f" "$SRC/$bucket/"  # -n: never overwrite
done

Skip (don't move) if mv -n would clobber. Report any skips.

6. Confirm

Print final counts per bucket and the source folder path.

Notes

• Empty buckets are not created.
• Hidden files (.DS_Store, .gitkeep) are ignored.
• Files that fail ffprobe (when attribute requires it) land in a _unprobed/ bucket and are listed in the report.
• This supersedes the legacy commands/separate-4k.md and commands/separate-photos-and-video.md scratch notes.