Script to insert file name to title field in file info

Here is a Photoshop script that "injects" the filename as title metadata into all files at the root level of the selected folder, without having to process the image data:

#target photoshop
app.activeDocument.info.title = app.activeDocument.name.replace(/\.[^\.]+$/, '');

Another Bridge script:

/**
* @@@BUILDINFO@@@ FilenametoTitle.jsx !Version! Tue Nov 26 2019 09:07:36 GMT-0500
*/
/*
Utility Pack Scripts created by David M. Converse ©2018-19

Writes filename to Title metadata field.

/* Modified 30 March 2020 by Stephen Marsh to retain original filename in full */

/*
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

#target bridge

if (BridgeTalk.appName == 'bridge') {
    try {
        var FilenametoTitle = new Object; //id object for this script
        #include "prefsReader.jsxinc" //shared prefs read code

        //create menu
        if (useMenu == true) { //use Tools submenu
            if (MenuElement.find('utilPack') == null) { //submenu not yet created
                MenuElement.create('menu', 'Utility Script Pack', 'at the end of Tools', 'utilPack');
            }
            var ftCmd = MenuElement.create('command', 'Filename to Title', 'at the end of utilPack');
        }
        else { //do not use submenu
            var ftCmd = MenuElement.create('command', 'Filename to Title', 'at the end of Tools');
        }

        if (useCMenu == true) { //use contextual submenu
            if (MenuElement.find('cutilPack') == null) {
                MenuElement.create('menu', 'Utility Script Pack', 'after Thumbnail/Open', 'cutilPack');
            }
            var ftContCmd = MenuElement.create('command', 'Filename to Title', 'at the end of cutilPack'); //add to Contextual menu
        }
        else { //do not use contextual submenu
            var ftContCmd = MenuElement.create('command', 'Filename to Title', 'after Thumbnail/Open', this.menuID); //add to Contextual menu
        }
    }
    catch (e) {
        //alert(e + e.line);
    }
}

ftCmd.onSelect = function () {
    ftAddFilenameToTitle();
}

ftContCmd.onSelect = function () {
    ftAddFilenameToTitle();
}

function ftAddFilenameToTitle() {
    try {
        var ftThumbs = app.document.selections; //get selected thumbnails
        if (!ftThumbs.length) return; //nothing selected
        if (ExternalObject.AdobeXMPScript == undefined) ExternalObject.AdobeXMPScript = new ExternalObject('lib:AdobeXMPScript');
        for (var a in ftThumbs) { //loop through thumbs
            var ftTitle = ftThumbs[a].name; //get filename
            //remove filename after last dash character
            //to retain filename after dash, comment out lines 69-73
            //ftTitle = ftTitle.split('-');
            //if(ftTitle.length > 1){
            //    ftTitle.length--;
            //    }
            //ftTitle = ftTitle.join('-');
            //remove filename after last period character
            //ftTitle = ftTitle.split('.');
            //if(ftTitle.length > 1){
            //    ftTitle.length--;
            //    }
            //ftTitle = ftTitle.join('.');
            var ftMeta = ftThumbs[a].synchronousMetadata;
            var ftXMP = new XMPMeta(ftMeta.serialize());
            ftXMP.deleteProperty(XMPConst.NS_DC, 'title'); //delete old title
            ftXMP.appendArrayItem(XMPConst.NS_DC, 'title', ftTitle, 0, XMPConst.ALIAS_TO_ALT_TEXT); //write new title
            ftXMP.setQualifier(XMPConst.NS_DC, 'title[1]', 'http://www.w3.org/XML/1998/namespace', 'lang', 'x-default');
            var ftUpdatedPacket = ftXMP.serialize(XMPConst.SERIALIZE_OMIT_PACKET_WRAPPER | XMPConst.SERIALIZE_USE_COMPACT_FORMAT);
            ftThumbs[a].metadata = new Metadata(ftUpdatedPacket); //write to file
        }
    }
    catch (e) {
        //alert(e + e.line);
    }
}

@dcsimages 

What file formats are being processed? Adobe Bridge would be a better place to do this, especially if the files are JPEG.

Photoshop can also update metadata without having to open the file.

Do you really need to do this on an open file? Is the batch action performing other steps, or only the metadata?