AviSynth+ 3.6.1 + Portable

Fix: proper handling of autoload directories precedence:
PluginDir+ in Software/Avisynth in HKEY_CURRENT_USER (highest priority)
PluginDir+ in Software/Avisynth in HKEY_LOCAL_MACHINE
PluginDir2_5 in Software/Avisynth in HKEY_CURRENT_USER
PluginDir2_5 in Software/Avisynth in HKEY_LOCAL_MACHINE (lowest priority)
Plugin (dll file name) found in a lower priority folder will not load if a similarly named plugin
already existed earlier.
fix: GeneralConvolution: incorrect parse of negative integer coefficient (added +1)
Regression since r2772.
Fix: GeneralConvolution: possible crash when chroma=true for 420 and 422 formats
Fix: ScriptClip + Runtime function object (which are new in 3.6) under heavy multithreading
New: Histogram("levels") to allow greyscale
Fix 3.6 regressions
when explicit "return last" was needed when followed by legacy function definition.
Windows XP is supported again (thread local storage workaround)
Stabilize CPP 2.5 plugins
allow forced named arrays usage again from plugins (MP_PipeLine)
Frame property related constants to match existing enum style in avisynth.h.
Plus they are not colliding now with VapourSynth's definitions.
Legend:
*_vcredist* = Includes the MSVC 2019 Redistributable
*_xp = Can be used on Windows XP
*-filesonly = Only the .dll files themselves, no installer. Includes both normal and -xp variants.
*_arm64test = Test build for Windows 10 on ARM64 processors.

Почитал описание и ничего непонял для чего эта прога, это что кодек или что это такое зачем это надо?

Почитал описание и ничего непонял для чего эта прога, это что кодек или что это такое зачем это надо?

Added predefined macros for ARM processors. Tested on Raspberry Pi 4B.
Added support for disabling the Intel SIMD intrinsics. Gets automatically disabled on non-x86 targets.
Added submodule to allow macOS 10.13 and 10.14 to build AviSynth+ with the native Clang compiler
Fixed some warnings on GCC (wangqr)
Implemented GetNumPhysicalCPUs on Linux and macOS (wangqr)
New function:
SetMaxCPU(string feature)

string "feature"

"" or "C" for zero SIMD support, no processor flags are reported
"mmx", "sse", "sse2", "sse3", "ssse3", "sse4" or "sse4.1", "sse4.2", "avx, "avx2"

parameter is case insensitive.
Note: "avx2" triggers FMA3 flag as well.

Processor options w/o any modifier will limit the CPU flag report to at most the processor level.
When "feature" is ended by '+', relevant processor feature flag will be switched on
When "feature" is ended by '-', relevant processor feature flag will be removed
Multiple options can be put in a comma separated list. They will evaluated in that order.

Examples:
SetMaxCPU("SSE2") reports at most SSE2 processor (even if AVX2 is available)
SetMaxCPU("avx,sse4.1-") limits to avx2 but explicitely removes reporting sse4.1 support
SetMaxCPU("C,avx2+") limits to plain C, then switches on AVX2-only support
Script array for NEW_AVSVALUE define are working again. (default in Linux build - experimental)
Fix: Mix/Max Runtime function 32bit float chroma: return -0.5..0.5 range (was: 0..1 range)
AviSynth+ enhancements by Nekopanda (Neo fork)
Allow multiple prefetchers (MT) (mentioned earlier)
Multithreading and deadlock fixes for ScriptClip
(originally I intended to pull only Neo changes which were fixing an old AVS+ bug,
namely ScriptClip and multithreading. But I was not able to do that without pulling
nearly everything from Neo)
Caching enhancements.
SetCacheMode(0) or SetCacheMode(CACHE_FAST_START) start up time and size balanced mode
SetCacheMode(1) or SetCacheMode(CACHE_OPTIMAL_SIZE) slow start up but optimal speed and cache size
Latter can do wonders especially at really low memory environment
ScriptClip and variable stability in multithreading.
UseVar, special filter, opens a clean variable environment in which only the
variables in the parameter list can be seen.
"escaped" string constants: with e prefix right before the quotation mask
n"Hello n" will store actual LF (10) control character into the string
n r t a f and " are converted
Introduce function objects into scripts
Functions can appear as standard Avisynth variables and parameters (AVSValue type='n')
https://github.com/nekopanda/AviSynthPlus/wiki/Language-New-Features
Even with variable capture [] (like in GRuntT args)
Filter graph. Switch it on by putting SetGraphAnalysis(true) at the beginning of the script.
Dump to text file with DumpFilterGraph. E.g. DumpFilterGraph("graph.txt", mode=2)
Frame properties (still from Neo!)
(experimental, we have planned it in Avs+, probably we'll try to follow the VapourSynth methods(?))
Fix: Multithreading enhancements and fixes (Nekopanda, from Neo fork)
Fix old ScriptClip (runtime filters) issue
In this example "current_frame" variable was not seen by YDifferenceFromPrevious scripted within SubTitle
resulting in "ERROR: Plane Difference: This filter can only be used within run-time filters" message
Now this script finally works:
SetLogParams("log.txt", LOG_DEBUG)
ColorBars(width=640, height=480, pixel_type="yv12")
ScriptClip(last, "Subtitle(String(YDifferenceFromPrevious))")
Prefetch(4)
Fix deadlock of ScriptClip on MT
MT improvement
Allow multiple Prefetchers

Add argument to Prefetch to change # of prefetch frames without changing # of threads
ex. Prefetch (clip c, int threads, int "frames")

In the original Plus, you could use only one Prefetch, but you can use any number of CUDA versions.
Also, an argument has been added to specify the number of frames to prefetch.
Prefetch (1,4) # Make 1 thread stand and prefetch 4 frames
By doing so, flexible parallelization configuration is possible, such as pipeline parallelization.

threads
Number of threads. If it is 0, it passes without doing anything.

frames
Number of frames to prefetch.
Again, if it is 0, it passes without doing anything.

Fix: BuildPixelType: chroma subsampling of sample clip was ignored.
POSIX: better behaviour under non-Windows because of having multiple sized fixed fonts, not only a single size=20 one.
e.g. MessageClip(), Info(), Version(), ColorYUV "show", internal ApplyMessage
Text filter:
font types with
"Terminus" fixed fonts added (12-14-16-18-20-22-24-28-32, regular + bold)
"Info_h" good old 10x20 fixed font kept under this name
much more international unicode characters (1354), use utf8=true under Windows
use fontname parameter (default "Terminus", other choice is "info_h")
use font_filename parameter (accepts BDF fonts at the moment - import is probably not too smart but worked for Terminus)
use size parameter (12 to 32, if no size is available, a smaller one is chosen but at least the smallest one)
new parameter: bold (default false)
Info() filter: when parameter "size" < 0, font is automatically enlarged over 640x480
(POSIX limit: minimum size is 12, maximum size is 32 - limited by available fixed fonts)")
SIL OPEN FONT LICENSE added because of usage of Terminus fonts)
able to build w/o GDI and font rendering engine under Windows, so that text-overlay filters
work like in POSIX version of AviSynth+ (mainly for my development test)
Use with NO_WIN_GDI define.
Fix: ReplaceStr when the pattern string to be replaced is empty
New:
Exist() to have bool utf8 parameter
This is another function to have utf8 option:
Usage: b = Exist("Здравствуй.mkv",utf8=true). Avs file is saved as utf8 w/o BOM
Fix: broken Exist for directories (regression appeared in 3.5.0)
Fix: ColorYUV: really disable variable search when parameter "conditional" is false
Development:
ScriptEnvironment::VSprintf: parameter (void *) is changed back to va_list.
May affect C interface (avs_vsprintf) and CPP interface (ScriptEnvironment::VSprintf)
Enhanced: Planar RGB to YUV 444 10-14 bits: more precision (32 bit float internally)
Enhanced: Planar RGB to YUV 444 10-16 bits: AVX2 (speed improvement)

VirtualDub отличная, простая прога с большим и качественным функционалом, где при правильном использовании, всегда будет результат высокого качества.

Испытывал, как то VirtualDub. Так и не смог с ним подружиться. Он мне показался очень архаичным. Думаю его любят лишь старые приверженцы, из ностальгических чувств.
Или я ошибаюсь?

Отличное дополнение к VirtualDub

Отличное дополнение к VirtualDub

More compiler coverage on POSIX
Native Clang on FreeBSD 12.1
Native AppleClang on Catalina
general code correctness fixes (-fpermissive is no longer required)
AddAutoloadDir now works on macOS and BSD
FreeBSD requires mounting procfs first in order for autoload to function
Automatic plugin autoloading now enabled on POSIX
ConvertStacked now is built and installed on POSIX by default
SONAME and SOVERSION defined for POSIX libavisynth.so
Fix: BuildPixelType: chroma subsampling of sample clip was ignored.
POSIX: better behaviour under non-Windows because of having multiple sized fixed fonts, not only a single size=20 one.
e.g. MessageClip(), Info(), Version(), ColorYUV "show", internal ApplyMessage
Text filter:
font types with
"Terminus" fixed fonts added (12-14-16-18-20-22-24-28-32, regular + bold)
"Info_h" good old 10x20 fixed font kept under this name
much more international unicode characters (1354), use utf8=true under Windows
use fontname parameter (default "Terminus", other choice is "info_h")
use font_filename parameter (accepts BDF fonts at the moment - import is probably not too smart but worked for Terminus)
use size parameter (12 to 32, if no size is available, a smaller one is chosen but at least the smallest one)
new parameter: bold (default false)
Info() filter: when parameter "size" < 0, font is automatically enlarged over 640x480
(POSIX limit: minimum size is 12, maximum size is 32 - limited by available fixed fonts)")
SIL OPEN FONT LICENSE added because of usage of Terminus fonts)
able to build w/o GDI and font rendering engine under Windows, so that text-overlay filters
work like in POSIX version of AviSynth+ (mainly for my development test)
Use with NO_WIN_GDI define.
Fix: ReplaceStr when the pattern string to be replaced is empty
New:
Exist() to have bool utf8 parameter
This is another function to have utf8 option:
Usage: b = Exist("Здравствуй.mkv",utf8=true). Avs file is saved as utf8 w/o BOM
Fix: broken Exist for directories (regression appeared in 3.5.0)
Fix: ColorYUV: really disable variable search when parameter "conditional" is false
Development:
ScriptEnvironment::VSprintf: parameter (void *) is changed back to va_list.
May affect C interface (avs_vsprintf) and CPP interface (ScriptEnvironment::VSprintf)
Enhanced: Planar RGB to YUV 444 10-14 bits: more precision (32 bit float internally)
Enhanced: Planar RGB to YUV 444 10-16 bits: AVX2 (speed improvement)

New:

New: Native Linux, macOS, and BSD support.
New function:
bool IsVersionOrGreater(int majorVersion, int minorVersion [,int bugfixVersion]) function
Returns true if the current version is equal or greater than the required one in the parameters.
The function is checking the current version against the given parameters (similar to a Windows API function)
e.g. IsVersionOrGreater(3, 4) or IsVersionOrGreater(3, 5, 8)
New: "Expr" helpers:
Constants "yrange_min", "yrange_half", "yrange_max"
Unlike the luma/chroma plane adaptive "range_min", "range_half", "range_max" these constants always report the luma (Y) values
new parameter: bool clamp_float_UV (default false)
this parameter affects clamping of chroma planes: chroma is clamped between 0..1.0 instead of -0.5..0.5s
"clamp_float" is not ignored (and set to true) when parameter "scale_inputs" auto-scales 32 bit float type pixels
New "yscalef" and "yscaleb" keywords similar to "scalef" and "scaleb" but scaling is forced to use rules for Y (non-UV) planes
new allowed value "floatUV" for scale_inputs.
In short: chroma pre-shift by 0.5 for 32 bit float pixels
Affects the chroma plane expressions of 32 bit float formats.
Shifts the input up by 0.5 before processing it in the expression, thus values from -0.5..0.5 (zero centered) range are converted to the 0..1 (0.5 centered) one.
Since the expression result internally has 0..1.0 range, this then is shifted back to the original -0.5..0.5 range. (since 2.2.20)
Note: predefined constants such as cmin, cmax, range_min, range_max and range_half will be shifted as well, e.g. the expression will see range_half = 0.5
These modifications are similar to Masktools2 2.2.20+
New: AddBorders, LetterBox: new color_yuv parameter like in BlankClip
Fixes:

Fix: ConvertBits 32->8 for extremely out of range float pixel values.
When pixel value in a 32 bit float format video was way out of range and greater than 128 (e.g. instead of 0 to 1.0 for Y plane) then the ConvertBits(8) had artifacts.
Fix potential crash on exit or cache shrink (linux/gcc only?)
Layer: support RGB24 and RGB48 (internally processed as Planar RGB - lossless pre and post conversion)
Fix: RGBP to 444 8-14bit right side artifacts at specific widths
Fix: "scalef" and "scaleb" for 32 bit input, when scale_inputs="floatf" produced wrong result
Fix: missing rounder in V channel calculation of PlanarRGB->YUV 8-14bits SSE2 code
Overlay: show error when Overlay is fed with clips with different bit depths
Fix: TemporalSoften possible access violation after SeparateFields (in general: after filters that only change frame pitch)
Fix: Shibatch.DLL Access Violation crash when exit when target rate is the same as vi.audio_samples_per_second or audio_samples_per_second is 0
Build system: Cmake: use platform toolset "ClangCL" for using built-in Clang support of Visual Studio.
Since VS2019 v16.4 there is LLVM 9.0 support.
Use: Tools|Get Tools and Features|Add Individual Components|Compilers, build tools, and runtimes
[X] C++ Clang compiler for Windows
[X] C++ Clang-cl for v142 build tools (x64/x86)
(for LLVM Clang installed separately, please use llvm or LLVM - no change in its usage)

Merges in the MT branch, the current state of pinterf/MT, and packaging fixes Bumps version to 3.4