Try downloading the. It's an exe file so you don't need to install anything. No need to install the codec pack as most sites recommend. Free image optimizer for mac. Tick the box that says 'Thumbnail settings for Windows Explorer and click next. There you'll have options to set a lot of different thumnbails.

It's because I have like 100 files already in this format and I need to upload to a website, I have the mp4 file embeded in the site already and the file played changes according to php. But what I really need is a way to dynamically create a thumbnail or take a snapshot of the video file to display on the page. This is easy to do and will stop all icon thumbnail generation of folder contents: Open any Finder window other than All My Files, and pull down the “View” menu, choosing “View Options”. Uncheck the box next to “Show icon preview”, then to apply this to change to all folders click the “Use as Defaults” button.

One thumbnail that won't show up is H264 in FLV container. You need to demux it and mux into mp4 or mkv container. You can use TweakUI to change the size of your thumbnails. Here are a couple of webpages. The second one has a lot of information and tools to try.

After searching around a bit, I found this: QuickLook Video This package allows OSX Finder to display thumbnails, static previews, cover art and metadata for most types of video files. QuickLook and Spotlight on OSX 10.9 and later understand a limited number of media files - mostly only MPEG audio and video codecs within MPEG container files. This package adds support for wide range of other codecs and 'non-native' media file types, including.asf,.avi,.flv,.mkv,.rm,.webm,.wmf etc. It was discussed in this thread here and developed by user Marginal.