I've decided to change the video player to an HTML5 video player (http://videojs.com) to allow for videos to play on mobile phones and tablets. The player works fine, and was successfully integrated into my installation of VLDpersonals (version 2.6), but the player only supports MP4, OGG/OGV and WEBM. The player defaults to a flash player if HTML5 is not supported, and the MP4 format seems like the way to go since it's compatible with both the flash and HTML5 players.

My attempts to edit references from '.flv' to '.mp4' have not been 100% successful. However, I have been able to maintain the thumbnail functionality through these edits. Here are the file names I've edited:

includes/core/core.ffmpeg.php
includes/fns/fns.misc.php
includes/lib/lib.account_videos.php

However, I'm certain that simply changing the file extension is not sufficient. More likely, changing the commands to ffmpeg is required. Any assistance with changing the default video conversion from FLV to MP4 would be greatly appreciated. Thank you in advance.