Video MSU Deblocking VirtualDub plugin   
http://www.compression.ru

Filter is intended for recovering quality of video ripped from DVD (for exmaple, when it contains 4 hours of video data), VideoCD or after decompressing by H.261, H.263, DivX 3, DivX 4, XviD. Filter automatically determines the blockiness's strength on the frame and in the concrete part of it, preserving the maximum of details. Thus, filter will process marginally when on scenes with slow motion, while it will smooth very hard in the case of fast motion in the same film. The main advantige of the filter is that it raise the integral quality in the most widespread PSNR metric in comparison with original film. That is, a film after decompression in comparison with original achieves the lower quality than a film after decompression and deblocking. (But for all that the original film is not used nowise, only decompressed data is used.)

MSU Denoising VirtualDub Video plugin   
http://www.compression.ru

Free high-quality video denoiser plugin for VirtualDub. Easy to use. The filter is designed for noisy video stream processing, video quality improvement, or video preprocessing, e.g. for preprocessing before compression or deinterlacing. Allows flexible denoising level setup in temporal and spatial dimensions. The filter suppresses noise in both spatial and temporal domains. For each type of denoising different properties could be set in the propery box. With specific combinations, spatial-only or temporal-only denoising could be enabled.

MSU StegoVideo   
http://www.compression.ru

Free program for hiding information in video. Data that you hide can be recovered even from compressed video, or if the video was compressed again by another codec! We smartly change video with understanding how codecs works, introducing small amounts of noise. You can hide not so big files, but for cipher communication or video secret marking it is enough! You can manage redundancy of information in film - if you want to compress video with low bitrate, you should increase redundancy, and vice versa.

EnhanceMovie   
http://movavi.com

EnhanceMovie is a handy, inexpensive, brainlessly-simple software that automatically cures any digital video from common problems - colors off balance, blurred picture, interlacing video or the "too dark" syndrome, among other things. The program has two major advantages. The first one comes in the form of multiple auto-filters that automatically "polish" video with one button click. Importantly, program users don't need to know anything about video editing or remastering in order to dramatically improve quality of their digital videos. EnhanceMovie does it all seamlessly, without user intervention. The second advantage is an option to select a part of the video (interval) that needs to be edited, and apply necessary filters only to that section. In addition to autofilters, the program offers multiple professional filters, such as DeNoise, Auto White Balance, Deblocking (for working with analog videos) and many others. Plus, EnhanceMovie has several artistic filters that will make home videos look very unusual. These are Mosaic, Posteraise, Grayscale, Invert, and they can be used to make home videos look like an old 30s movie or very futuristic. Key features: - Auto Filters: Magic Enhance, Auto Contrast, Auto Saturation, Auto White Balance. - Effective video filters: Denoise, Deiinterlace, Deblocking, Brightness/Contrast, Sharpen, Blur, Color Temperature, Hue/Saturation, Gamma, Color Balance, Chroma Balance. - Artistic video effeccts: Mosaic, Add Noise, Posterize, Diffuse, Grayscale, Invert - AVI, MPEG, VOB, MP4, MOV, WMV formats supported - Filters and effects can be applied to specified fragments of video - Play video in the Original, Filtered and Split Modes. - Drag-and-Drop interface, very easy to learn and use.

Audio Video IFilter   
http://www.aimingtech.com

Audio Video IFilter is a content indexing filter for WMA, WMV and MP3 files. The IFilter is compatible with all indexing services based on the Microsoft Search technology: Microsoft Indexing Service, Windows Desktop Search, Microsoft SharePoint Portal etc. Audio Video IFilter extends the services capabilities to index the WMA, WMV, MP3 files providing content search for them. Audio Video IFilter extracts two kinds of text metadata: standard ASF metadata form ASF, WMA, WMV files and ID3 tags from MP3 files. The ID3 tags is the de-facto standard of storing metadata in the MP3 files. Audio Video IFilter is a software component that provides benefits together with other Windows applications. With AimAtFile Fast File Search the IFilter helps you quickly find music and movies in your home collection. With Microsoft Indexing Service under Internet Information Server or with SharePoint Portal the IFilter lets you provide your site or portal visitors with a powerful search of multimedia content. The program is free for non-commercial use and 30-day trial for commercial use.