VirtualDub is a video capture/processing utility for 32-bit and 64-bit Windows platforms (98/ME/NT4/2000/XP/Vista/7), licensed under the GNU General Public License (GPL). It lacks the editing power of a general-purpose editor such as Adobe Premiere, but is streamlined for fast linear operations over video.  It has batch-processing capabilities for processing large numbers of files and can be extended with third-party video filters. VirtualDub is mainly geared toward processing AVI files, although it can read (not write) MPEG-1 and also handle sets of BMP images.
"I basically started VirtualDub in college to do some quick capture-and-encoding that I wanted done; from there it's basically grown into a more general utility that can trim and clean up video before exporting to tape or processing with another program.  I released it on the web and others found it useful, so I've been tinkering around with its code ever since. "

Features:
• Fractional frame rates.  Don't settle for 29 or 30 when you want 29.97.
• Optimized disk access for more consistent hard disk usage.
• Create AVI2 (OpenDML) files to break the AVI 2GB barrier and multiple files to break the FAT32 4GB limit.
• Integrated volume meter and histogram for input level monitoring.
• Real-time downsizing, noise reduction, and field swapping.
• Verbose monitoring, including compression levels, CPU usage, and free disk space.
• Access hidden video formats your capture card may support but not have a setting for, such as 352x480.
• Keyboard and mouse shortcuts for faster operation.  To capture, just hit F6.
• Clean interface layout: caption, menu bar, info panel, status bar.
• Reads and writes AVI2 (OpenDML) and multi-segment AVI clips.
• Integrated MPEG-1 and Motion-JPEG decoders.
• Remove and replace audio tracks without touching the video.
• Extensive video filter set, including blur, sharpen, emboss, smooth, 3x3 convolution, flip, resize rotate, brightness/contrast, levels, deinterlace, and threshold.
• Bilinear and bicubic resampling -- no blocky resizes or rotates here.
• Decompress and recompress both audio and video.
• Remove segments of a video clip and save the rest, without recompressing.
• Adjust frame rate, decimate frames, and 3:2 pulldown removal.
• Preview the results, with live audio.
 
Changes in VirtualDub Build 32661 (1.9.7, stable) [October 18, 2009]:
[bugs fixed]
   * AVI: Modified indexing traversal to handle deeply nested hierarchical indices.
   * Filters: Rescaling after changes to filter chain now extends or trims ending ranges as needed to match changes to frame count.
   * Filters: Fixed bug where a filter capable of both 3D accelerated and unaccelerated modes (resize) could force a conversion to YV24 at its input when RGB32 was a better match.
   * Filters: Filter preview no longer always runs the filter chain with the input video mode set to default.
   * Display: Added workaround for video card/driver combos that perform extremely poorly with DirectDraw/Direct3D blits overlapping a secondary monitor. This can be toggled in Options > Preferences > Display.
   * Command line: The warning dialog at the end of command line processing is now suppressed if /x is specified.
[regressions fixed]
   * Filters: Fixed filter errors not showing up properly.
   * Filters: Fixed crash when PNG decoding error occurs with logo filter.
   * Filters: Fixed random crash when opening Video Filters dialog before opening any videos.

Homepage - http://www.virtualdub.org