Yes this is possible and Yes there is a Photoshop/Bridge scripting community both here in this forum and here at…
If you just want help/guideance in writing your own script… you could post in either. Depending on how much help you require then there is an optional 'donate' over at the linked forum. ps-scripts is probably the best place to go if you want to contact a scripter to make fully tailored solution for you…
When you record actions and use "save as" and you want the action to save in the same folder with the same file name as the original it is very important when recording the action not to make any change in the save dialog fields you want Photoshop to default to the original. Use the File type pull down menu to change the type but do not change the folder or file name areas in any any way for if you do those changes will be hard coded into the action. And when you batch the action check Override save as in the batch dialog to insure the save is into the proper folder.
Will this create an action with no path? If so it doesn't seem to work with
my tests. I open a .tif, record the action and only select .PSD in the drop
down file type. then i stop the action. When I look at the action it has a
path in it. Am I missing something?
You need to batch the action use menu File>Automate>Batch and in the Batch dialog you need to set the destination folder to be the same as the source folder and check the OVERRIDE SAVE AS check box to insure the path will be overridden action always seen to want to record the folder name even when you didn't set it or change Photoshop default.
Try out Dr. Brown's 1-2-3 Process script. It allows you to do multiple conversions at 1 time and save them in the original folders. You can download the script from http://russellbrown.com/scripts.html. Make sure you get the script for your version of Photoshop.
This is an awesome script to have on hand.