# Orc 0.4.43 release

**URL:** <https://discourse.gstreamer.org/t/orc-0-4-43-release/5888>\
**Category:** News and Announcements\
**Tags:** orc\
**Created:** [August 28, 2026, 11:39pm UTC](https://discourse.gstreamer.org/t/orc-0-4-43-release/5888 "2026-08-28T23:39:22Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![tpm](https://discourse.gstreamer.org/letter_avatar_proxy/v4/letter/t/c5a1d2/32.png) [@tpm](https://discourse.gstreamer.org/u/tpm)\
**Post date:** [August 28, 2026, 11:39pm UTC](https://discourse.gstreamer.org/t/orc-0-4-43-release/5888/1 "2026-08-28T23:39:22Z")

</div>

The GStreamer team is pleased to announce another release of **liborc, the Optimized Inner Loop Runtime Compiler** , which is used for SIMD acceleration in GStreamer plugins such as audioconvert, audiomixer, compositor, videoscale, and videoconvert, to name just a few.

This release contains both bug fixes and new features.

## Highlights

- Add AVX512 support
- neon: add divluw rule (used in GStreamer’s compositor, videomixer, gaudieffects and alpha-blending code paths)
- neon: add mulslq, mululq rules, shlq, shrsq, shruq (used in GStreamer’s audio processing elements)
- orccodemem: Invalidate code chunks when recycling for QEMU
- orcprogram-c: Allow negative constants
- arm, neon: Split ARM and NEON logic into 32-bit and 64-bit
- RISC-V: many fixes and enhancements, including some new rules
- LoongArch: various fixes and enhancements
- OpenBSD/FreeBSD improvements
- Miscellaneous fixes
- ci fixes

## Direct tarball download

- [orc-0.4.43](https://gstreamer.freedesktop.org/src/orc/orc-0.4.43.tar.xz)

> **sha256sum**
>
> 82394e20e5c4dffe8b45ea8525c62dd4e3e8be7f253ac11c19297ba7ea5473e0

## Contributors

Brad Smith, Carlos Falgueras García, Felix Gong, Jeongkeun Kim, Jin Bo, Jorge Zapata, L. E. Segovia, Tim-Philipp Müller, Yao Zi

For more details see the [0.4.43 milestone page in GitLab](https://gitlab.freedesktop.org/gstreamer/orc/-/milestones/15).

Please give it a spin and let us know of any issues in [GitLab](https://gitlab.freedesktop.org/gstreamer/orc/)!