The previous goexif reader only understood EXIF in JPEG/TIFF, so videos,
PNGs and any image without an EXIF block were stored with no metadata at
all. Shell out to exiftool instead (the same tool the prior version used),
which covers images, video and audio in one pass.
Run it with `-n` so every tag comes back as a raw numeric/machine value
(FileSize in bytes, Duration in seconds, AvgBitrate as a number) rather
than human-readable strings — the metadata is the basis for analytics, not
decoration. Temp-file artifacts (SourceFile/Directory/permissions/inode
dates) are stripped and FileName is set to the original.
content_datetime now resolves from the first real capture date in the
metadata (DateTimeOriginal, then the video CreateDate atoms), still falling
back to the import mtime. When exiftool isn't on PATH the pure-Go EXIF
reader remains as a graceful fallback.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
H1K0
52c62b5c8d