The 1.6 branch is getting closer to stable and as such most of the changes are bug fixes, although a few new features snuck in there.

  * Added vdub.exe launcher for basic command-line driven operation.
  * Added multiple undo/redo for timeline edits.
  * Added /? switch to list command-line options.
  * Added support for reading paletted BMPs.
  * Dub input format is now reported in the log.
  * Script: Added Sylia.Atoi(), Atol(), and Atod() functions to allow
    conversions from string to value.
  * Script: Added VirtualDub.Log(string) command to output to log output
    (or console).

I wanted to add DV capture support to this release but ran into a critical problem: I have no DV capture devices for development. I do have a Pinnacle DVplus, but I have no drivers for it, the website seems to be specifically made to prevent you from getting any, and even if I had them it's not clear I could capture without a DV camcorder attached. It's basically impossible to diagnose capture problems without the actual hardware. As a result 1.6.5 still does not allow you to capture from a capture device that outputs DV data. Sorry.

Build 23567 (1.6.8, stable): [July 3, 2005]
  [bugs fixed]
  * Fixed occasional crash if display panes are refreshed while editing the
    filter list.
  * Fixed hang if VirtualDub is the active application and attempts to refresh
    the display panes when a display mode switch occurs.
  * Display panes did not always update properly when seeking if Direct3D mode
    was enabled and updating the frame took a lot of CPU time.
  * Direct3D display mode could be activated if checked even if the option was
    grayed due to DirectX support being disabled.
  * Capture: Fixed crash if capture is attempted with audio enabled but audio
    isn't present or is in an incompatible format.
  * Reversed direction of mouse wheel action to be consistent with Windows.
  * Hex editor's Extract Segment command would sometimes extract the wrong
    segment due to repainting the main pane during the extract.
  * CLI interface app didn't exit if console was empty prior to invocation due
    to overzealous Explorer detection. This is now only done if no arguments
    are supplied.
  * Fixed crash in MPEG-1 parser when encountering a pack with a too-short
    length, such as zero.
  * Audio codec errors sometimes reported the wrong source of the error (i.e.
    decompressor vs. compressor).

  [regressions fixed]
  * Pixel shaders were disabled in Direct3D bicubic mode due to debug code
    mistakenly left in.
  * MRU list sometimes didn't resort properly when reopening a recently opened
    file.

i just noticed that there is now a batch option in f4 window, any ideas from what version is that allready there? (in any case: very cool)

That's been there for a really long time. At least since 1.4 when I started using it. It's not a difficult feature to program, so I wouldn't be suprised if it's been there since the very first days of the program.

What's new is this secondary exe, the "VirtualDub command-line driver application". I have no idea what it does or how it works. Time to head over to doom9 for some search & read for the next hour or two.

Build 23604 (1.6.9, stable): [July 10, 2005]
  [bugs fixed]
  * Extended workaround for Huffyuv joining problems to capture mode
    (pre-zeroing format block).
  * Hex editor would warp to a random location when using the mouse wheel for
    the first time.
  * Currently displayed frame was not updated after a reload (F2).
  * Fixed errors when opening YCbCr (YUV) videos that had nonstandard bit
    depth or image size values in the frame header.
  * YV16 input is now supported; previously it could be written but not
    re-read.

  [regressions fixed]
  * Fixed sporadic audio compression errors at end of render.

Build 23774 (1.6.11, stable): [October 2, 2005]
  [features fixed]
  * Added support for using D3D .fx files for hardware-assisted display. This
    requires d3dx_25.dll (DirectX 9.0c April 2005) to work.
  * Added keyboard shortcuts for scene forward/backward.

  [bugs fixed]
  * The current frame could not be copied after a "scan for errors" command.
  * Fixed crash in DV type-1 audio resampling code at end of stream.
  * Fixed audio read errors on DV type-1 files with drop frames.
  * Fixed a couple of crash bugs related to using positive audio displacements.
  * Fixed a rare filter crash triggered by a previously failing filter suddenly
    becoming able to start while the filter list is being edited.
  * Fixed bad write length in .wav writer.
  * If precision was set to "no change" but channel conversion was enabled, the
    audio was converted to 8-bit.
  * Error descriptions for failed jobs were often truncated after exiting and
    restarting the app.
  * JPEG decoder sometimes reported false parsing errors due to not parsing
    over comment blocks.
  * Filter load and AVI append functions could report "operation completed
    successfully" rather than the proper error.
  * AVI File Information reported an incorrect preload value for AVIs that
    started with a video chunk.
  * Capture: Stop conditions were being saved even if Accept was pressed.
  * Capture: Emulation test driver crashed on activation if the last used video
    file couldn't be found.
  * (AMD64 only) Disassembler was not decoding base registers properly.
  * (AMD64 only) Cropping was incorrect or outright broken with some video
    filters.

  [regressions fixed]
  * "Split" audio filter was broken.
  * Frameserver exposed too much audio when range to be served was set through
    range selection, rather than the tail being deleted.

  [features added]
  * Performance settings are now auto-saved.
  * Cropping dialogs now auto-scale video that is too large to display and
    use a dashed crop border for better visibility.
  * Added /cmd flag to quickly invoke a script command from the command-
    line.
  * There is now an option to avoid tearing in the video display panes.
  * Script: Added VirtualDub.Exit(int) command to end the program with a
    specific error code.
  * Script: Added VirtualDub.subset.length property for current length of
    subset in frames (timeline).
  * Script: Added VirtualDub.video.length property for current length of
    source video in frames.
  * Capture: The list of statistics displayed in the info panel has been
    expanded and can be filtered from the Preferences dialog.
  * Capture: Modified option to adjust video timing based on drift from
    ideal stream timing rather than real-time.
  * Capture: Reworked video timing interpolation to be less sensitive to
    discontinuities in the system timer.
  * Capture: "Autoincrement filename" option now automatically skips over
    existing files as well.
  * Capture: Added timing graph to visualize behavior of resync engine.
  * Capture: Timing logs, if enabled, are automatically saved at the end of
    capture.
  * Capture: Increased precision of frame period selection from 1us to 100ns
    to reduce frame dropping at device level when using DirectShow drivers.
  * Capture: Capture from DV sources to type-2 DV AVI using the DirectShow
    DV driver is now supported.
  * Capture: Backspace now works when entering channel numbers.

  [bugs fixed]
  * Increased precision of processing fps estimate.
  * "Space" is no longer listed as an accelerator for "abort dub" since it
    doesn't work as such when rendering to disk. It still works for preview.
  * Fixed job control re-enabling itself if a menu command is chosen while a
    job is running, leading to possible reentrancy crashes.
  * Clearing the current job list or loading a new one while a job was in
    progress led to a crash.
  * Invalid MPEG-1 layer II frame headers display a slightly less confusing
    error than "internal error."
  * Renamed "use internal MJPEG decoder" in AVI extended open options to
    "use internal decoders," since it happened to force the internal DV
    decoder too. Added a sticky option in Preferences for this.
  * Filters were receiving inconsistent output frame numbers when using
    input preview or saving with a starting offset.
  * Fixed crash when crop rectangle reduced filter input to smaller than 1x1.
  * Fixed crash when using deinterlace filter in "duplicate field 2" mode.
  * Fixed broken cropping in some modes of deinterlace filter.
  * Manually stopping a save operation will now also stop a running script,
    and cause a command-line task to return with an error code.
  * CLI tool didn't work properly when path to vdub.exe/vdub64.exe contained
    spaces.
  * Removed some hard-coded limits on frame rates in the Frame Rate dialog
    box.
  * Fixed minor memory leak when plugins fail to load.
  * Fixed a case where an I/O error on the output AVI file could cause a hang
    instead of an error to be displayed.
  * MPEG-1: Fixed yet another rare frame decoding error when seeking randomly
    in the timeline.
  * MPEG-1: Fixed crash when opening file with all CPU optimizations forced on.
  * D3DFX: vd_tvpcorrect, vd_t2vpcorrect, vd_tvpcorrect2, and vd_t2vpcorrect2
    constants were computed with U and V sizes swapped.
  * Capture: VFW devices sometimes didn't display overlay properly with full-
    height frame sizes and consumed additional CPU due to the preview hook
    being left enabled.
  * Capture: The Video File (emulation) test capture driver is no longer a
    candidate for being saved as the driver to auto-start the next time
    capture mode is entered.
  * Capture: Unicode filenames are now displayed properly in the title bar.
  * Capture: Fixed 0.03% sync error when using NTSC frame rates.
  * Capture: Fixed random crash when modifying filter parameters with a WDM
    capture driver active in accelerated preview mode.
  * Capture: Fixed keyboard focus on startup so that entering channel numbers
    works again.
  * Capture: Fixed instability on reporting errors when audio resampler is
    enabled.
  * (AMD64 only) Fixed crash when opening a Motion JPEG file with no MJPEG
    codec installed. Note that the internal MJPEG codec still isn't
    implemented for this platform.

  [regressions fixed]
  * Capture: Fixed normal errors sometimes being reported as internal errors.

Build is experimental, not stable.