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AviSynth+ is a fork of the well-known frameserver featuring new functionality and optimizations not available in mainline. In the hope of modernizing AviSynth to meet present day needs and expectations, the project encourages everybody to help reach our goals: add long-sought features, energize the community, and improve developer and user friendliness. AviSynth+ is fully compatible with plugins and scripts written for AviSynth.

Free software
OS: Win
File size: 27MB
Old versions
Version history
8.1/10
6 votes
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Screenshots

AviSynth+ screenshot
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Latest version

3.6.0 (May 20, 2020)



Download


Visit developer's site

Download AviSynth+ 3.6.0  27MB  Win




Download old versions


Download AviSynth+ old versions



Software License

Free software / FOSS (Free download and also Free and Open Source Software)



Supported operating systems

WinWindows




Version history / Release notes / Changelog


AviSynth+ 3.6.0

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("&#1047;&#1076;&#1088;&#1072;&#1074;&#1089;&#1090;&#1074;&#1091;&#1081;.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)

View full changelog




All features


Changes compared to AviSynth

64-bit version available
Faster script startup and substantially faster core filters
Support for multiple ("shadow") plugin directories
Autoloading of C-plugins
Script language extensions, with support for multiline conditionals and loops.
Improved still image support and TimeStretch

Developer features

Easy and fast compilation, with current compilers
2x increased compilation speed
Improved debugging experience
Leaner and more logical project structure
Large parts of the code refactored




Sections/Browse similar tools






Alternative to AviSynth+


Avisynth







Guides and How to's




Acronyms / Also Known As

AviSynth Plus, AviSynthPlus, Avisynth MT




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6 reviews, Showing 1 to 5 reviews


Thank you very much. Good works..

Review by Edi on May 21, 2020 Version: 3.6.0 OS: Windows 10 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10




Below posted on doom9 forum, avs+ thread in devs.

"Just checked, VideoHelp now hosting current AviSynth+ 3.4.0 Portable 7z file. [SHA-1 matches that on Github]."

Thanks Moderator, everything hunky-dory now.

Avisynth+, is fan-dabby-dozy :)


Review by StainlessStephen on Nov 22, 2019 Version: 3,4,0 OS: Windows 7 Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10




Here post from Doom9 on Portable version.

[QUOTE=qyot27;1889452]I've uploaded a plain 7z portable for 3.4.0 (well, technically, r2925 built from master, but the extra commit* only touched the READMEs, it's still otherwise-identical to 3.4). I also removed the GCC archive since videohelp still was (or, [i]is[/i] at this time of writing) pointing at it as a 'portable' even when that was not the intention.

*the other's just the merge commit for that one change[/QUOTE]

[QUOTE=StainlessS;1890873]VideoHelp is actually providing a zip file GCC version as portable version, here [[B][COLOR="Red"]DO NOT DOWNLOAD Portable version[/COLOR][/B]]:- [url]https://www.videohelp.com/software/AviSynth-Plus[/url]

I reported the post with this message (limited in length), so hopefully it will be removed as an option from the VH post.[/QUOTE]



Review by StainlessStephen on Nov 20, 2019 Version: 3.4.0 Portable OS: Windows 7 Ease of use: 1/10 Functionality: 1/10 Value for money: 1/10 Overall: 1/10




Thank you very much.. Required for StaxRip convert. Good work.

Review by TechnoMan on Oct 21, 2019 Version: 3.4.0 OS: Windows 7 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10




Wish this is implemented in other FOSS Video Editors (Blender VSE or Shotcut)

Review by TA 213 on Dec 19, 2017 Version: r2574 OS: Windows 10 64-bit Ease of use: 7/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10


6 reviews, Showing 1 to 5 reviews

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