Child functions.php Not Overriding Parent functions.php

Hello,
Three questions please – (perhaps one should actually be in a different post?)
1. I want to do the same as webbee – modify the child functions.php file to change image sizes. Do I understand correctly from this thread that this is not possible right now? I def. prefer not to add plugins unless absolutely necessary, but it sounds like the parent functions.php had to be modified. Yes or no? If so, how do I do this and will I lose the change with an update?

2. You said above “You have to put your code in the child theme in an action hook:” If I post the code (I’ve copied in below) into the child functions.php file – exactly what needs to be posted with it to make it override the parent?

I changed to Enfold from another theme (loving it so far) and know that I need to regenerate the thumbnails, but I would like to set and test sizes. I want to test with how big images can be without slowing down site and see how various options look before making a decision about the final layout. Last question may belong in another post, but I can’t find search results that address it and this is what I hope to do with the child theme…

3. Since my site features video and websites, I want proportions to be (at least roughly) 16:9 for all thumbs/images associated with the video category, post format and specific tags. (It would be cool to have 4:3 or even square for the website items, but I can live without that if needed.) The site is small/new enough that I can delete and re-upload images if necessary, because speed on mobile vs great looking video is the decision I am facing when I select optimal sizes.

I’m starting with 1920X1080 images (or could use 1280X720) as large screen shots for videos, but can anyone advise/explain what – if anything – will happen to the responsive/mobile version if I start changing the proportion here?
I did find the section (copied below) in the parent functions file that I assume I would need to modify:

/*
 * Register additional image thumbnail sizes
 * Those thumbnails are generated on image upload!
 *
 * If the size of an array was changed after an image was uploaded you either need to re-upload the image
 * or use the thumbnail regeneration plugin: http://wordpress.org/extend/plugins/regenerate-thumbnails/
 */

$avia_config['imgSize']['widget']  = array('width'=>36,  'height'=>36);      // small preview pics eg sidebar news
$avia_config['imgSize']['square']  = array('width'=>180, 'height'=>180);   // small image for blogs
$avia_config['imgSize']['featured']  = array('width'=>1500, 'height'=>430 );  // images for fullsize pages and fullsize slider
$avia_config['imgSize']['featured_large'] = array('width'=>1500, 'height'=>630 );   // images for fullsize pages and fullsize slider
$avia_config['imgSize']['extra_large']  = array('width'=>1500, 'height'=>1500 , 'crop' => false);   // images for fullscrren slider
$avia_config['imgSize']['portfolio'] = array('width'=>495, 'height'=>400 );   // images for portfolio entries (2,3 column)
$avia_config['imgSize']['portfolio_small']  = array('width'=>260, 'height'=>185 );    // images for portfolio 4 columns
$avia_config['imgSize']['gallery']  = array('width'=>710, 'height'=>575 );    // images for portfolio entries (2,3 column)
$avia_config['imgSize']['magazine']   = array('width'=>710, 'height'=>375 );    // images for magazines
$avia_config['imgSize']['masonry']    = array('width'=>705, 'height'=>705 , 'crop' => false);   // images for fullscreen masonry
$avia_config['imgSize']['entry_with_sidebar']  = array('width'=>710, 'height'=>270);   // big images for blog and page entries
$avia_config['imgSize']['entry_without_sidebar']= array('width'=>1030, 'height'=>360 );   // images for fullsize pages and fullsize slider

//overwrite blog and fullwidth image on extra large layouts
if(avia_get_option('responsive_layout') == "responsive responsive_large")
{
     $avia_config['imgSize']['gallery']  = array('width'=>845, 'height'=>684 );  // images for portfolio entries (2,3 column)
     $avia_config['imgSize']['entry_with_sidebar']   = array('width'=>845, 'height'=>321);   // big images for blog and page entries
     $avia_config['imgSize']['entry_without_sidebar']= array('width'=>1210, 'height'=>423 );   // images for fullsize pages and fullsize slider
}

Is there an easier/simpler way to approach this? Anyone else doing mostly video who has a solution?
Thanks so much for any assistance with this.

• This reply was modified 10 years, 3 months ago by siestajoye.