Version History of VirtualDub 1.7.0 [features added]
New "smart rendering" feature for selective processing of video around edit areas while copying as many existing frames as possible.
New audio waveform/spectrogram display.
Added option for preserving empty frames during recompression or decompression instead of replicating frames.
Added option for saving raw audio stream without a header.
Added support for the Sony WAVE64 file format, for wave files larger than 4GB.
Added support for reading and writing Adobe Filmstrip (.flm) files.
Added support for reading Maya IFF (.iff) files. Currently this is limited to RGB information at 8 bits/channel.
PNG output is now supported.
Resize video filter now has options for relative and aspect-ratio derived sizing and to save defaults.
Opening a video file from the command-line or drag-and-drop now sets the filename as default for the Save As AVI/WAV dialogs.
Added new pitch scaling audio filter.
Improved quality of "center cut" audio filter (with suggestions from Moitah).
The main window and job control dialogs now save their positions.
Opacity curves can now be attached to video filter instances.
Volume adjustment now shows amplification factor in decibels.
Filter API: Preview code preserves keyboard accelerators on preview button.
Job control: (X of Y) is now displayed in the job control window caption when the job list is being processed.
AVI Info now shows additional information for PCM audio streams encoded using WAVE_FORMAT_EXTENSIBLE.
Capture: Added experimental option to insert arbitrary DirectShow transform filters into a capture graph. To enable, specify the filter moniker in [HKCU\\Software\\Freeware\\VirtualDub\\Hidden Features\\CapDShow: Transform filter name] in the Registry.
Capture: Added full-screen toggle (Alt+Enter).
Capture: Added support for switching DirectShow TV tuners between antenna and cable modes.
[features removed]
The "integral conversion" option under audio conversion is no longer supported.
[bugs fixed]
Fixed a case where the projected file size status indicator could overflow for very long audio dumps.
AVIs with MP3 audio streams where wBitsPerSample != 0 are now detected and auto-corrected for better compatibility with the standard MP3 codec installed in Windows.
Rewrote segmentation code to buffer data instead of attempting size prediction; this makes the segmentation more accurate and avoids dangling key frames during on-the-fly compression.
Added workaround for compatibility problems with Aero Glass in Windows Vista beta 2.
Audio displacement now works when processing only part of the audio stream.
Added warning for non-zero dwStart values in AVI files.
Fixed a performance problem in the PNG decoder on large images with a lot of IHDR blocks.
Fixed errors in JPEG encoding with pure red or blue colors.
Changed keyboard shortcut for Undo from Ctrl+U to the standard Ctrl+Z.
Added workaround for annoying Microsoft security update that sometimes prevents the help file from working.
Fixed clamping in amplifier that caused -0x8000 values to change to -0x7FFF.
Capture: Duplicate raw wave formats are no longer shown with DirectShow-based drivers.
Capture: The UI now reflects changes to audio and video sources made through the driver dialogs.
Capture: Possible fix for crash when changing formats with DirectShow-based devices due to threading issue.
About:
VirtualDub is a video capture/processing utility for 32-bit Windows platforms (95/98/ME/NT4/2000/XP), 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.
An exciting history of VirtualDub startup can be found here.
