seqdo¶

seqdo runs a shell command for each frame in a sequence, substituting frame numbers. This is useful for batch processing or automating per-frame operations.

Usage¶

seqdo COMMAND [FRAMES]

• COMMAND: The shell command to run. Use @ and # for frame number patterns.
• FRAMES: Frame range or sequence expression.

Options¶

• --dry-run, -n: Show what would be done, but do not actually run commands.
• --verbose, -v: Show detailed output for each command.
• --strict: Stop on the first error.
• --quiet, -q: Only print errors.
• --version: Show version and exit.

Examples¶

Print a message for each frame:

seqdo 'echo Processing frame @' -f 1001-1005

Run an image conversion for each frame (requires that convert is available):

seqdo 'convert infile.@.jpg -resize 50% outfile.@.jpg' -f 1001-1020

Output¶

• Shows command output and errors for each frame.
• Returns a nonzero exit code if any problems are found.