facebook - Graph API: Retrieving picture dimensions in page feed -


i'm using graph api wall post of fan page.

i noticed facebook ios app able determine exact ratio placeholder.

enter image description here

http://developers.facebook.com/tools/explorer?method=get&path=facebook%2ffeed%3ffields%3dpicture

{     "data": [              {              "picture": "http://photos-b.ak.fbcdn.net/hphotos-ak-frc1/247019_457846347622804_946521095_s.jpg",              "id": "20531316728_10151883063741729",              "created_time": "2013-05-02t16:57:25+0000"              },                :                :                :              {              "picture": "http://photos-e.ak.fbcdn.net/hphotos-ak-ash4/223257_10151498310776729_930531604_s.jpg",               "id": "20531316728_10151498193061729",               "created_time": "2012-10-05t18:42:38+0000"              }              ],      "paging": {         "previous": "https://graph.facebook.com/20531316728/feed?fields=picture&limit=25&since=1367513845",          "next": "https://graph.facebook.com/20531316728/feed?fields=picture&limit=25&until=1349462557"     } }

there contains no information of pictures' dimension in api response, i'd have correct placeholder size custom client facebook ios app.

i tried adding /facebook/feed?fields=picture,width,height no luck in retrieving corresponding information.

is there possible way retrieve pictures's height , width param api itself?

no, api doesn't return all picture's dimensions based on post feed /page_id/feed or stream table.

i mentioned because, can is:

select post_id, created_time, actor_id, attachment, message stream source_id=page_id , created_time<now() limit 50

if post type photo: enter image description here

if post type video: enter image description here

if post type link start fbexternal (extract parameter w , h): enter image description here

if post type link without fbexternal (facebook photo), stuck here!: enter image description here

code prototype:

if attachment:     image_url = attachment.media[0].src     if image_url:         m = image_url.photo.images         if m:             if m.src == image_url:                 image_width = m.width                 image_height = m.height         else: #no dimensions info             if host fbexternal:                 #extract parameter w , h https://fbexternal-a.akamaihd.net/safe_image.php?d=aqbhfbzbnudc_se8&w=130&h=130&url=http%3a%2f%2f                 image_width = 130                 image_height = 130              else:                  stuck here, hard extract photo id based on url, lot of work!

in conclusion, highly recommend image width , height after download photo. example, php have getimagesize function , python have python imaging library (pil).


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