This query is marked as a draft This query has been published by Dispenser.

SQL

x
 
-- 2> /dev/null; date; echo '
/* GIF metadata validity check
 */
USE commonswiki_p;
CREATE DATABASE IF NOT EXISTS u2029__p;
/* https://noc.wikimedia.org/conf/highlight.php?file=CommonSettings.php */
SET @wgMaxImageArea=10e7, @wgMaxAnimatedGifArea=10e7; 
CREATE TEMPORARY TABLE u2029__p.gif_size (
  img_framecount INT NOT NULL,
  img_looped TINYINT NOT NULL,
  img_duration FLOAT NOT NULL
) ENGINE=MyISAM AS
SELECT /*SLOW_OK*/
  page_id AS img_page,
  img_name, img_size,
  img_width, img_height,
  img_bits,
  img_timestamp, img_user_text,
  SUBSTRING_INDEX(SUBSTRING_INDEX(img_metadata, "\"frameCount\";i:", -1), ";", 1) AS img_framecount,
  SUBSTRING_INDEX(SUBSTRING_INDEX(img_metadata, "\"looped\";b:",     -1), ";", 1) AS img_looped,
  SUBSTRING_INDEX(SUBSTRING_INDEX(img_metadata, "\"duration\";d:",   -1), ";", 1) AS img_duration
FROM image
JOIN page ON page_namespace=6 AND page_title=img_name
WHERE img_major_mime="image" AND img_minor_mime="gif"
AND img_media_type="BITMAP";
SELECT
  CONCAT("align=left | [[:File:", REPLACE(img_name, "_", " "), "]]") AS "File",
  img_timestamp,
  img_width, img_height,
  img_bits,
  img_framecount,
  img_size,
  (img_width*img_height*GREATEST(1,img_framecount) + 280*POW(2,img_bits)*GREATEST(1,img_framecount) + 8*1024) AS est_size,
  CAST(img_size AS SIGNED) - (img_width*img_height*GREATEST(1,img_framecount) + 280*POW(2,img_bits)*GREATEST(1,img_framecount) + 8*1024*1024) as diff
FROM u2029__p.gif_size
LEFT JOIN categorylinks ON cl_from=img_page AND cl_to IN ("True_color_GIFs")
WHERE cl_from IS NULL AND (
  /* Check compression ratio */
  img_size/(img_width*img_height*GREATEST(1,img_framecount)+768*GREATEST(1,img_framecount)+8*1024)>=1.00
)
By running queries you agree to the Cloud Services Terms of Use and you irrevocably agree to release your SQL under CC0 License.
All SQL code is licensed under CC0 License.

Checking query status...