seqchk¶

seqchk checks image files for validity. This is useful for verifying that all files present are not corrupt or zero-length.

It doesn't identify missing frames - use seqls -m to identify missing frames.

Usage¶

seqchk [PATTERN] [OPTIONS]

• PATTERN: Optional filename pattern using shell wildcards (for example, render.*.exr or filename.????.tif).

Options¶

• --verbose, -v: Show detailed output for each file.
• --only-sequences, -o: Only consider sequences, ignore other files.
• --strict: Stop on the first error.
• --dry-run, -n: Show what would be checked, but do not actually check files.
• --version: Show version and exit.

Examples¶

Check all files in the current directory:

seqchk

Check only sequence files in the current directory:

seqchk -o

Check a JPEG sequence using a shell wildcard:

seqchk "shotA.*.jpg"

Show line-by-line check output for each file:

seqchk --verbose "render.*.exr"

Output¶

• Reports unreadable/corrupt files per sequence checked.
• Returns a nonzero exit code if any problems are found.

Typical Use Cases¶

• Automated QC in render farms.
• Pre-delivery checks for VFX shots.
• Spot-checking sequences after file transfers.