Tag Archives: Exif

The Instagram Metadata Massacre

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Instagram Fingers

Instagram Fingers

I’ve been playing around with the iPhone app Instagram.  I decided to give this freebie a try after a gaggle of soulless self promoting Apple marketing zombies declared it “imaging app of the year.”  Instagram, like Hipstamatic,  (which incidentally stopped working after the last update), crops iPhone images to squares, applies hokey filters and then offers you the opportunity to “share”  or print your masterpieces on related websites.  Apparently Instagram is already one of the words largest online photo libraries. Considering Instagram images are filtered iPhone shots it’s almost certainly the world’s second largest online collection of crappy throw-away shots.  Facebook is the largest if you’re wondering!

You probably sense that I am not drinking the Instagram cool-aid. Instagram is a fine fun freebie but it strips EXIF data from the images it drops in the iPhone camera roll. This is the second iPhone EXIF exterminator I have encountered.  I have this thing about EXIF data; it annoys me when software massacres it.

Here’s a little poem:

Exterminate EXIF – NOT

Let it be

Set your fricking EXIF free

Alas, with Instagram, it’s not to be!

More on that SmugShot Metadata Mess

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A few days after posting a J script that fixes EXIF timestamps in SmugShot images SmugMug changed the filename assigned to downloaded SmugShot images.

Originally the layout was:

SmugMugID_smugshot_SmugShotID.jpg

This layout was inconsistent with the way SmugMug normally handles files. Default SmugMug behavior is to leave filenames unchanged.  This contrasts with other photo sites, (you know who you are), that rename your sacred files to suit their indexing schemes. A few days ago SmugMug corrected this discrepancy and downloaded SmugShot images reverted to their original format:

smugshot_SmugShotID.jpg

This fix broke smugshotexif: see: my previous post. I have modified SmugShotFix.ijs to handle the current format and the older one.  I will keep tweaking this hack until SmugShot’s sloppy EXIF handling is corrected.

SmugShot Metadata Mess

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SmugShot iPhone App Logo

SmugShot iPhone App Logo

While languishing in a series of hospitals and rehab centers recovering from a bad fall I have been amusing myself by taking iPhone pictures and posting them to SmugMug with SmugShot.

SmugShot is a nifty little iPhone app that uploads iPhone pictures and videos directly to your SmugMug galleries. SmugShot is a freebie so I cannot, in good faith, whine about missing features but SmugShot has one serious deficiency: it strips EXIF timestamps. Native iPhone jpegs contain EXIF timestamps but after passing through SmugShot only GPS information survives. I am not sure if this is by design or oversight but I don’t like it!

The fix is straight forward:

  1. Download SmugMug metadata.
  2. Download all SmugShot pictures.
  3. Match pictures with metadata and use upload timestamps as date taken EXIF timestamps.
  4. Finally replace the uploaded SmugShot images with the EXIF repaired versions.

Simple but tedious. The following J word manipulates Phil Harvey’s superb command line utility exiftool to cleanup the SmugShot metadata mess. The words used by smugshotexif are in the J script SmugShotFix.ijs. You can also find this script in the J files sidebar of this blog. Look in the J Scripts directory. Let’s hope the next version of SmugShot fixes the date time issue and hacks like this will no longer be necessary.

smugshotexif=:4 : 0

NB.*smugshotexif v--  inserts missing EXIF  metadata  in SmugShot
NB. iPhone uploads.
NB.
NB. The  iPhone  SmugShot  app  removes  EXIF  information during
NB. upload. This verb restores items I care about.
NB.
NB. dyad:  btclSmugMetaData smugshotexif clPathFile
NB.
NB.   NB. update TAB delimited SmugMug metadata tables
NB.   SmugTablesFrXml2 'c:\pd\docs\smugmug\data\smugheavy.xml'
NB.
NB.   NB. load SmugShot specific metadata
NB.   SMUGSHOTMD=: readsmugshots 0
NB.
NB.   SMUGSHOTMD smugshotexif 'c:\pictures\2011\Missouri\wip\1204618219_smugshot_9811805.jpg'
NB.
NB.   NB. fix all jpg files in a directory
NB.   (<SMUGSHOTMD) smugshotexif&> 1 dir 'c:\pictures\2011\Missouri\wip\*.jpg'

NB. extract SmugMug id from SmugShot file name
spid=. <extractsmugid y

NB. all smugshot pids
pids=. x {"1~ (0{x) i. <'PID'

if. spid e. pids do.

  NB. metadata exists for image insert items
  pos=. pids i. spid

  exif=. setartistcopyright y

  NB. use upload date for the missing original datetime
  date=. ;pos { x {"1~ (0{x) i. <'UPLOADDATE'
  date=. '-:' charsub date
  exif=. date setdate y

  caption=. ;pos { x {"1~ (0{x) i. <'CAPTION'
  exif=. caption setdescription y

  lb=. pos { x {"1~ (0{x) i. ;:'LATITUDE LONGITUDE'
  if. *./ 0 < #&> lb do.
    lb=. _999&". &> lb
    exif=. lb setlatlng y
  end.

  NB. rename as iphone file with original smugshot number
  NB. format path chars for windows rename
  newname=. '.jpg'&beforelaststr y
  newname=. 'iphone ',('_'&afterlaststr) @:(' [s'&beforelaststr) newname
  shell '/\' charsub 'rename ' , ; ' ' ,&.> dblquote y;newname,'.jpg'

  newname ; exif
else.
  'No SmugShot metadata for';spid
end.
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