Whats new:
[features added]
* Partial Unicode support -- you can now open and save
files using Unicode filenames.
* "Chroma smoother" video filter refilters point-sampled
chroma with linear interpolation.
* Single-stream cut & paste. (Be patient....)
* Improved performance of AVI parser, particularly for
Direct mode streaming.
* Improved performance of bicubic upsampler.
* Audio filter graph now shows intermediate audio
formats on connections.
* Audio filters can now be plugins.
* New MPEG-1 video core (Meia) -- full vertical
clipping. Horizontal clipping is still by macroblock.
* Rewrote display code -- DirectDraw support is now
automatic.
* Log windows now have a context menu for clearing,
copying, and saving the log text.
* Modified AVI2 indexing to relax indexing restrictions
somewhat, although it's still not user configurable
yet.
[bugs fixed]
* Hex editor occasionally displayed the wrong data after
a find or save command.
* "Attach extension" option didn't work for signpost
save dialog.
* Fixed crash when I/O errors occur during a processing
operation, and then occur again when attempting to
gracefully finalize the partial output file.
* "Clear" didn't work in audio filter graph.
* Fixed I/O errors when attempting to push audio forward
with advanced audio filtering enabled.
* "Go to" command didn't handle timestamps with frac-
tional seconds that only had 1 or 2 decimal digits.
* "General convolution" generated bad code for factors
of 2, 4, and 8 when dynamic compilation was enabled.
* Interleave periods of zero are no longer allowed.
* Added workaround for crash or hang when compressing
with the "3ivx D4 4.0.4" video codec.
* Fixed non-interleaved save mode and made it cooperate
with segmentation.
* Added workaround for heap corruption when processing
audio in advanced mode sourced from some versions of
Avisynth.
* Clarified DivX warning to note that it doesn't apply
to the DivX 4+ codecs.
* Fixed filter cropping not working properly when
"motion blur" was the first filter in the chain.
Release notes
----
VirtualDub 1.5.5 is out on SourceForge and is the first version that I've explicitly tagged as "experimental." The primary reason is the new display code — 1.5.5 is the first version to use DirectDraw by default, the result of which is a significant increase in rendering speed as well as a usable stretch. (Right-click the panes for the new options.) 1.5.4 is pretty stable at this point and as such it's a good idea to split versions into stable and development releases. So please try 1.5.5 and report the problems, and if you have problems, use 1.5.4. 1.5.5 does add a few more workarounds for various problems as well as some optimizations for direct stream copy mode, so if all goes well it should work better than 1.5.4.
1.5.5 allows audio filters to be plugins, but I haven't completed the audio filter SDK yet and I'm not sure I like the current API. For those of you that want to experiment with it, there is a new "samplefilter" project in the VirtualDub source code. (Contact me if you want the preliminary SDK.) Keep in mind that the API is still fluid and I'll probably nuke this API version in the future.
There is no P4 version of 1.5.5, and there may not be P4 versions of subsequent releases. The reason is that Intel C/C++ 6.0 started miscompiling parts of the code base starting with 1.5.5 in ways that can cause crashes and/or heap corruption — specifically, in some exception handling contexts the generated code double-destroys objects. This then causes string objects to trash memory. As I'm increasingly moving toward dynamic strings instead of fixed-size buffers for text handling I've decided that I cannot afford possible instability in my P4 releases in exchange for the minor performance gains provided by the Intel compiler. The code base still compiles under Intel C/C++ however, for those of you that want to try.
----
http://www.virtualdub.org/
[features added]
* Partial Unicode support -- you can now open and save
files using Unicode filenames.
* "Chroma smoother" video filter refilters point-sampled
chroma with linear interpolation.
* Single-stream cut & paste. (Be patient....)
* Improved performance of AVI parser, particularly for
Direct mode streaming.
* Improved performance of bicubic upsampler.
* Audio filter graph now shows intermediate audio
formats on connections.
* Audio filters can now be plugins.
* New MPEG-1 video core (Meia) -- full vertical
clipping. Horizontal clipping is still by macroblock.
* Rewrote display code -- DirectDraw support is now
automatic.
* Log windows now have a context menu for clearing,
copying, and saving the log text.
* Modified AVI2 indexing to relax indexing restrictions
somewhat, although it's still not user configurable
yet.
[bugs fixed]
* Hex editor occasionally displayed the wrong data after
a find or save command.
* "Attach extension" option didn't work for signpost
save dialog.
* Fixed crash when I/O errors occur during a processing
operation, and then occur again when attempting to
gracefully finalize the partial output file.
* "Clear" didn't work in audio filter graph.
* Fixed I/O errors when attempting to push audio forward
with advanced audio filtering enabled.
* "Go to" command didn't handle timestamps with frac-
tional seconds that only had 1 or 2 decimal digits.
* "General convolution" generated bad code for factors
of 2, 4, and 8 when dynamic compilation was enabled.
* Interleave periods of zero are no longer allowed.
* Added workaround for crash or hang when compressing
with the "3ivx D4 4.0.4" video codec.
* Fixed non-interleaved save mode and made it cooperate
with segmentation.
* Added workaround for heap corruption when processing
audio in advanced mode sourced from some versions of
Avisynth.
* Clarified DivX warning to note that it doesn't apply
to the DivX 4+ codecs.
* Fixed filter cropping not working properly when
"motion blur" was the first filter in the chain.
Release notes
----
VirtualDub 1.5.5 is out on SourceForge and is the first version that I've explicitly tagged as "experimental." The primary reason is the new display code — 1.5.5 is the first version to use DirectDraw by default, the result of which is a significant increase in rendering speed as well as a usable stretch. (Right-click the panes for the new options.) 1.5.4 is pretty stable at this point and as such it's a good idea to split versions into stable and development releases. So please try 1.5.5 and report the problems, and if you have problems, use 1.5.4. 1.5.5 does add a few more workarounds for various problems as well as some optimizations for direct stream copy mode, so if all goes well it should work better than 1.5.4.
1.5.5 allows audio filters to be plugins, but I haven't completed the audio filter SDK yet and I'm not sure I like the current API. For those of you that want to experiment with it, there is a new "samplefilter" project in the VirtualDub source code. (Contact me if you want the preliminary SDK.) Keep in mind that the API is still fluid and I'll probably nuke this API version in the future.
There is no P4 version of 1.5.5, and there may not be P4 versions of subsequent releases. The reason is that Intel C/C++ 6.0 started miscompiling parts of the code base starting with 1.5.5 in ways that can cause crashes and/or heap corruption — specifically, in some exception handling contexts the generated code double-destroys objects. This then causes string objects to trash memory. As I'm increasingly moving toward dynamic strings instead of fixed-size buffers for text handling I've decided that I cannot afford possible instability in my P4 releases in exchange for the minor performance gains provided by the Intel compiler. The code base still compiles under Intel C/C++ however, for those of you that want to try.
----
http://www.virtualdub.org/
