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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.
Features of VirtualDub 1.7.2 :
Sure, you've probably played a few video clips on your monitor. But have you ever made one yourself? Used a video capture device? Wrestled with the software that comes with it? Felt like the software is a few leagues above or below your level? Time to try something else.
• VirtualDub helps you get video into your computer.
If your capture device is Video for Windows compatible, then VirtualDub can capture video with it. But VirtualDub isn't your average capture program:
- 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.
• VirtualDub lets you clean up video on your computer.
There are lots of programs that let you "edit" video. And yet, they're frustratingly complex for some of the simplest tasks. VirtualDub isn't an editor application; it's a pre- and post-processor that works as a valuable companion to one:
- 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.
You can take a captured clip, trim the ends, clean up some of the noise, convert it to the proper frame size, and write out a better one. Don't see a video filter you want? Write your own, with the filter SDK.
• VirtualDub is fast.
The author of VirtualDub is very impatient. That means his program is designed for speed, both in the interface and in the processing pipeline. Converting a compressed, 320x240 MPEG-1 file to an uncompressed, 24-bit AVI requires only these two steps in VirtualDub:
- Open video file (Ctrl-O).
- Save AVI (F7).
How fast is this operation? On a C450, 40 frames per second (1.3x real-time speed). With a little tweaking, the speed rises to 55 fps (1.8x), with the CPU hardly breaking a sweat at 40%.
• VirtualDub is cheap.
To be exact, it costs nothing. VirtualDub is licensed under the GNU General Public License, meaning you can use it for free. No risk involved, and the whole source code is available if you want it.
Changes in VirtualDub 1.7.1 and VirtualDub 1.7.2.27700 :
• Build 27700 (1.7.2, experimental) [May 19, 2007]:
• [features added]
- Added minor frame lines to the parameter curve editor.
- Input driver plugin support.
- The threshold, sharpen, and brightness/contrast filters now support preview.
- The DV type-1 audio source can now be set to conceal errors.
- Rendering operations can be throttled or paused.
- Capture: Screencap driver can now capture the mouse cursor.
• [bugs fixed]
- AVI parser now handles files with a significant amount of garbage prior to the first video or audio chunk.
- Curve editor opens to current frame instead of frame 0.
- Smart rendering didn't check the right locations in filter opacity curves if edits had been applied.
- Animated GIF decoder didn't handle the "erase" and "restore" disposal modes correctly.
- Animated GIF decoder could display a one-frame glitch at start of decoding.
- Time-based filters and filter curves weren't reflected in output preview when applied to a repeating frame.
- Fixed interlaced field DirectDraw display with planar YCbCr formats.
- The "smart rendering" option could cause a missing codec error even if the video mode was set to Direct.
- Added workaround for BlackMagic MJPEG codec not producing key frames.
- Added workaround for update problems with the Direct3D and OpenGL display modes in Windows Vista.
- Capture: Fixed crash when attempting to use "remove duplicate frames" feature of screencap driver on a 3D card that didn't support occlusion query.
- Capture: Fixed crash in screencap driver on 3D cards that don't support buffer objects.
- Capture: Fixed bugs in screencap driver's rescale function.
• [regressions fixed]
- Fixed inaccurate length field in WAV header.
- D3D: Fixed memory leak.
- AMD64: MPEG video decoder now works.
Changes in 1.6.19.24478 :
• Build 24478 (1.6.19, stable) [June 3, 2007]:
- Fixed crash when creating batch jobs with certain Pinnacle video codecs.
- Fixed crash when reading top-down BMP files.
- Added workaround for crash on startup on some Windows 98/ME machines.
• Related downloads:
- VirtualdubMod: is a unification of several popular modifications of the famous video editing software VirtualDub.
- VirtualDub-MPEG2: VirtualDub mod with MPEG2(SVCD,DVD,VOB) import support.
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