VirtualDub is a video capture / processing utility for 32-bit Windows platforms, 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. It is mainly geared toward processing AVI files, although it can read MPEG-1 and also handle sets of BMP images.

What's New in version 1.9.2:

[features added]:

• UI: Added support for configuring keyboard shortcuts in edit mode.
• UI: Added Always on Top to window menu.
• Filters: Filter cropping dialog is now resizable.
• Filters: Added align-to-2 option in resize filter.
• Filters: ELA and Yadif modes of deinterlace filter are now optimized for CPUs that have MMX but lack SSE2.
• Filters: The filter preview window now has the same context menu size and filter options as the main panes.
• Filters: Frame conversions at the start of a video filter are now cached.
• Filters: Fixed rare crash when downsizing 8-bit YCbCr images with resize filter.
• Filters: Improved frame allocator assignment for lower memory usage.
• Filters: Added field delay filter.
• Render: Added an option to warn if no audio is written on a save operation.
• Render: Fixed several blitter bugs, particularly those involving 4:1:1 sampling.

[bugs fixed]:

• Preferences: Audio buffers value was set incorrectly exiting the dialog. The value show when the dialog appears was correct.
• Filters: Fixed positioning issues in the filter cropping dialog for small frame sizes.
• Filters: Filters now receive finite mFrameCount values in render mode instead of unspecified (-1).
• Filters: Yadif mode of deinterlace filter was not caching internal frames efficiently.
• Filters: Fixed crash in certain paths when a filter frame request fails.
• Filters: Fixed occasional crashes with aligned scanline requests, particularly with cropping.
• Filters: Fixed artifacts in resize filter on right border with certain filter+ratio combos, pre-SSE4.1 CPUs, and YCbCr formats.
• Capture: Custom video format had HDYC listed twice instead of HDYC and v210.
• Images: Fixed hang in PNG encoder.
• Render: Added workaround for random hang when aborting render while using XviD with threaded compression enabled.
• AMD64: Fixed crash in resampler with certain filter/ratio combinations.

[regressions fixed]:

• UI: Timeline scrubbing is more responsive again when dealing with files that have long delta frame runs (since 1.9.1).
• Render: Fixed hang if there is a string of duplicate frames longer than the video pipeline (since 1.9.1).
• Filters: Fixed some caching and frame numbering issues with filters that have non-zero lag (since 1.9.1).