12/31/2023 0 Comments Jpegmini latest versionAt least not as long as you don't zoom in several hundred percent. Despite heavy size reduction all the images don't show any signs of pixelation or other quality losses. Just take a look at the examples on their website and you'll agree. JPEGmini - Convictive Technology for Uncomplicated Size Reduction ![]() We show you what JPEGmini is all about and have five licenses for the Windows and Mac versions to give away. Two days ago, ICVT launched the long-awaited app for Windows users. For months the service had only been available as a web app, then a Mac app was started. The larger the original file is, the higher the achievable reduction result. Most remarkably, the pictures don't lose quality visibly. According to the company, other than changing the compression level of the video frames, JPEGmini does not alter any other attribute of the video file meaning, metadata, audio tracks, and file formats all remain the same.It's been one and a half years since ICVT, a startup from Israel, surprised us with the inception of a web service able to reduce uploaded JPG images to one fifth of their original size. Then the video version of BQM is used to compare the quality of each candidate frame with the source file to determine which is the best (smallest) candidate to use. The diagram below shows the structure of the enhanced BQM that the company uses for video applications:Įffectively, JPEGmini says that the same method used to optimize JPEGs with the app are applied frame by frame to video files, first decoding the video then each frame is re-encoded with a higher level of compression to produce one or more candidate video frames. “In addition, when using the video version of BQM, we ‘pool’ together with the tile quality scores to create a single quality score for the video frame.” ![]() “In order to capture these additional potential artifacts, we enhanced BQM with two more components: An Edge Loss component and a Temporal Consistency component,” the company continues. JPEGmini says that the application required some adjustment of the compression to ensure artifacts would not be left behind and all edges in the frame remain sharp. “This is information that is imperceptible by humans, and there is no point in keeping information that we can’t see… But how do we identify such information, and remove it, while making sure all “essential” information is preserved? This is where the Beamr Quality Measure (BQM) comes into play.” “Basically, the way JPEGmini performs its ‘magic’ of reducing file size without affecting quality, is by removing perceptually redundant information from the image file,” the company explains. ![]() The technology being used to optimize video files in JPEGmini is the same as tools used by many large video streaming services to reduce the video storage and delivery costs, which the company says is designed to ensure a quality streaming experience that is still top-notch for the end-users. The company says that video optimization times will vary based on the size and duration of the video clips imported into the application. The current 3.3 version supports the optimization of h.264(AVC) MP4 and MOV files and users can expect up to a 50% file size reduction (30% on average, with peaks up to 80%), while quality and playability remaining the same as the original file, the same as the company says can be expected of JPEGs. The company says users can even grab entire folders of files with images and video files interspersed within them which the program can work through in a single batch process. Like everything else with JPEGmini, optimization of video begins with a simple drag-and-drop into the app.
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