How do I make sure that the quality of my photos is not affected by JPEGmini? For further details, see the technology section. JPEGmini works by analyzing the input image using a unique quality detector which imitates the human visual system and based on this analysis applying the maximum amount of compression which will not cause visible artifacts. Although these formats presumably offer better compression than JPEG, JPEGmini’s perceptual recompression technology can produce JPEG files that are smaller in size than corresponding JPEG2000, JPEG-XR or WebP files. Newer formats such as JPEG2000, JPEG-XR and WebP have not gained significant market share yet. JPEGmini uses the standard baseline JPEG format, which is by far the established market leader in the image compression space. How does JPEGmini compare with JPEG2000, JPEG-XR, WebP, or other image formats? JPEGmini files are optimized JPEG files, whose parameters have been tuned to significantly reduce the file size without affecting perceptual quality. #Jpegmini update softwareJPEGmini files are in standard JPEG format, which can be viewed and edited by any browser, photo software or consumer device. If you have an image-intensive website, your pages will load faster, improving user experience, monetization, and SEO, and you’ll also reduce your storage and bandwidth costs. With JPEGmini you can store more photos on your hard drive and online photo service accounts, attach more photos to your emails and upload your photos faster to the web. 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.JPEGmini is a photo optimization technology that reduces the file size of JPEG photos by up to 5X while preserving the resolution and quality of the original photos. 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. #Jpegmini update mp4The 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.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |