Software » Useful Tools » AviSynth+ 3.7.5 / 3.7.6 Beta

Avisynth+ v3.7.6pre-r4669 test build Pre-release

20260827 3.7.5.r4669 (pre 3.7.6)
New array syntax: add dictionary-style ArraySet (replaces or appends)
New array syntax: add dictionary-style ArrayDel (deletes by key, no-op if not found)
New array syntax: add ArrayIndexOf which returns the actual index of the dictionary-style array search
See https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/script_ref/script_ref_arrays.html
Fix AviSynth#505: Expr Vector-C relative-row addressing (x[dx,dy]) ignored the current row
entirely, and additionally mis-scaled the row byte offset for 16-bit/float sources.
Fix AviSynth#506: Compare 32-bit SAD/SD accumulators (8-bit packed/planar, C and SSE2/ISSE
paths) could overflow on large frames (e.g. 4K RGB32); now 64-bit unconditionally.
Fix AviSynth#507: Compare RGB24/RGB48 MAD/MD denominator divided by a hardcoded 4 (assumed
4 channels/pixel) instead of the actual per-pixel component count (3).
Fix AviSynth#508: Compare uninitialized internal mask could give non-deterministic MAD/MD
results for RGB48/RGB64.
Fix AviSynth#509: ConvertBits automatic preconversion for large dither_bits gaps (e.g.
16-bit source with dither_bits=1) silently dropped the dithering, falling back to
a plain bit-depth expansion.
Fix AviSynth#510: Layer "Mul" raw multiply product used a plain bit shift instead of the
existing MagicDiv, so near-max products came out one unit too low (e.g. 255*255 -> 254).
Fix AviSynth#511: ConvertYUV444ToRGB/ConvertRGBToYUV444 left the synthesized alpha plane
uninitialized when converting an alpha-less source to an alpha-carrying target.
Fix AviSynth#512: "Overlay" masked "add"/"subtract"/"darken"/"lighten"/"difference"/"exclusion"/
"softlight"/"hardlight" a fully-opaque mask did not reproduce the same result as omitting the mask.
As a side effect, also added finer opacity-granularity over 8 bits at integer formats.
Fix: ArrayIns/ArraySet/ArrayDel: bounds check the index parameter(s) (preventing Access Violation)
Fix/optimize: avs/minmax.h content now is force-inlined, since MSVC placed a function call for them!
(checked with actual disassembly).
Plus: wrap min/max/clamp in an anonymous namespace to prevent a theoretical translation unit mismatch across archs
(e.g. when SSE2/AVX2/AVX512 specific .cpp files are built with different per-file compiler flags).
Part of our public headers, but no interface change was done.
various memory related fixes (msg7086)
fix various regressions (to be detailed later)

Avisynth+ v3.7.6pre-r4626 test build Pre-release
Changes since last dev build 20260518 3.7.5.r4604 (pre 3.7.6)
Full change list: https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/changelist376.html

20260622 3.7.5.r4626 (pre 3.7.6)
Fix (20260518-dev) regression: Subtitle raised an error on grayscale (Y-only) clips
(regression from recent gdi/placement refactoring).
Make Overlay's internal 444 conversion to give bit-identical results for C and SIMD, add AVX2 remove ISSE path
Make Overlay's "multiply" to give bit-identical results for C and SIMD
20260620 3.7.5.rXXXX (pre 3.7.6)
Fix AviSynth#485: AVX2 horizontal resampler for PlanarRGB(A) to packed RGB32/RGB64
missed processing the right-edge tail pixels in each row.
20260611 3.7.5.rXXXX (pre 3.7.6)
Resampler AVX512: cleanup — remove obsolete/duplicate kernel variants superseded
by the pretransposed-coefficient approach introduced on 20260610.
20260610 3.7.5.rXXXX (pre 3.7.6)
Resizers: AVX512 H-resizer precomputed coefficient table (contribution: DTL2020).
resize_prepare_coeffs_AVX512_H builds a transposed/unpacked coefficient table
(pixel_coefficient_AVX512_H) before the row loop, so permute indices and
coefficients are no longer re-derived per-row inside the kernel.
Resizers: new AVX512 H-resizer "_pretransposed_coeffs" kernels for uint8
(mpz_ks4/ks8/ks16, mpz_2s32_ks64, 2s32_ks8) and uint16
(mp_ks8, 2s32_ks4/ks8, 4s16_ks8, 4s16_ks48); each templated on UseVNNI so
one implementation covers both VNNI/VBMI ("fast") and BASE AVX512 paths.
2s32_ks8 uint8 kernel reworked into this common VNNI/BASE-friendly form.
New kernels wired into the AVX512 H-resizer dispatcher.
Resizers: fix permutex2var_epi8 simulation — rework and correct castsi
zero-extension usage; fix coefficient table layout in resize_prepare_coeffs_AVX512_H.
Resizers: AVX512/AVX2 float H-resizer dispatch updated for the pretransposed-coeff
path; dispatching logic and comments revised.
20260529 3.7.5.rXXXX (pre 3.7.6)
Fix AviSynth#482: YV411 (4:1:1) to higher-bit-depth YUV conversion: perform chroma
subsampling first, then bit-depth conversion, instead of the reverse order that
produced incorrect output for all non-8-bit targets.
Layer: fix regression in PlanarRGB(A) "add" mode — opacity was inadvertently
ignored after the recent packed/planar RGB refactoring.

Avisynth+ v3.7.6pre-r4604 test build Pre-release
Full change list: https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/changelist376.html

20260518 3.7.5.r4604 (pre 3.7.6)
Subtitle: add "placement" string parameter — chroma location hint for subsampled
YUV (4:2:0, 4:2:2, 4:1:1). When gdi=true, all three siting modes are supported:
"MPEG2"/"left" (default), "MPEG1"/"center", and "top_left" (UHD 4:2:0/4:2:2).
Default is read from the _ChromaLocation frame property, falling back to "left".
When gdi=false only "left" and "center" are implemented (same as Text).
Subtitle: add "gdi" bool parameter. When false, Subtitle uses the built-in bitmap
font (Terminus) instead of Windows GDI rendering (same path as Text). Faster and
cross-platform compatible; placement is then limited to "left"/"center".
Default: true.
See at https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/corefilters/subtitle.html
Text: add "gdi" bool parameter (accepted, has no effect; API compatibility with
Subtitle — on non-Windows Subtitle is aliased to Text). Default: false.
Subtitle Antialiaser (Windows GDI): GetAlphaRect() now has SSE4.1, AVX2, and
AVX512 SIMD implementations.
Internal mask buffer refactored to row-interleaved SoA layout for correct
chroma-placement-aware UV compositing via prepare_effective_mask_for_row
downsampling (8 MaskModes covering all subsampling ratios x siting variants;
SIMD rowprep dispatch matching Overlay/Layer).
ShowCRC32: new "channels" (select planes), "mode" (0=combined, 1=per-plane), and
"showmode" (0=display, 1=display+frameprop, 2=frameprop only) parameters;
frame property "ShowCRC32" is an int64 array of unsigned 32-bit CRC values;
planar RGB(A) planes always in R,G,B,A order; packed formats with default parameters
hash the raw buffer unchanged (backward-compatible).
See at https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/corefilters/showframes.html
rstdoc: document Invert's chroma inversion behavior
See at https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/corefilters/invert.html
20260506 3.7.5.r4589 (pre 3.7.6)
TL;DR (since r4565):

Layer/Overlay/Merge: weighted and masked-merge kernels unified into a shared family (C/SSE4.1/AVX2/NEON);
SIMD chroma-placement mask downsampling for 4:2:0/4:2:2/4:1:1 sources;
"placement" parameter for Overlay "blend" (new) and Layer (new "top_left" option added):
values are "mpeg2" (default), "mpeg1", "top_left".
See at https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/corefilters/layer.html

Layer: new "mulovr" mode (Overlay-compatible YUV multiply with luma-driven chroma desaturation);
new "top_left" placement option; legacy MMX/iSSE removed.

Merge (non-masked) C/SIMD integer arithmetic unified.

SIMD additions: AVX2/SSE4.1/NEON float chroma-mask row preparation; AVX2 float weighted merge.

Further optimizations: Invert (AVX2/SSE2), ExtractX (direct packed-RGB path),
ConvertBits int depth-reduce C loop, PlanarRGB(A)->RGB32/64 (AVX2).

SetFilterProp: conditional injection by filter argument value; capture mode;
SetFilterPropPassthrough helper; GetFilterProps() diagnostics function.
See also: AviSynth#393
and the online documentation at https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/corefilters/setfilterprop.html

Bug fixes: Text("\n") crash on zero-length lines; Layer no longer silently rounds odd x/y
offsets on subsampled YUV — accepts them as-is like Overlay; ceiling formula for
non-grid-aligned positions — last chroma column/row is no longer skipped in either filter.

Avisynth+ v3.7.6pre-r4589 test build Pre-release
20260506 3.7.5.r4589 (pre 3.7.6)
TL;DR (since r4565):

Layer/Overlay/Merge: weighted and masked-merge kernels unified into a shared family (C/SSE4.1/AVX2/NEON);
SIMD chroma-placement mask downsampling for 4:2:0/4:2:2/4:1:1 sources;
"placement" parameter for Overlay "blend" (new) and Layer (new "top_left" option added):
values are "mpeg2" (default), "mpeg1", "top_left".

Layer: new "mulovr" mode (Overlay-compatible YUV multiply with luma-driven chroma desaturation);
new "top_left" placement option; legacy MMX/iSSE removed.

Merge (non-masked) C/SIMD integer arithmetic unified.

SIMD additions: AVX2/SSE4.1/NEON float chroma-mask row preparation; AVX2 float weighted merge.

Further optimizations: Invert (AVX2/SSE2), ExtractX (direct packed-RGB path),
ConvertBits int depth-reduce C loop, PlanarRGB(A)->RGB32/64 (AVX2).

SetFilterProp: conditional injection by filter argument value; capture mode;
SetFilterPropPassthrough helper; GetFilterProps() diagnostics function.
See also: AviSynth#393
and the online documentation at https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/corefilters/setfilterprop.html

Bug fixes: Text("\n") crash on zero-length lines; Layer no longer silently rounds odd x/y
offsets on subsampled YUV — accepts them as-is like Overlay; ceiling formula for
non-grid-aligned positions — last chroma column/row is no longer skipped in either filter.
Full change list: https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/changelist376....

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