[FFmpeg-devel] Re: [Question]Inquiry Regarding RISC-V RVV Optimization for HEVC Decoding in FFmpeg

[Zhao Zhili via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>]

> On Nov 14, 2025, at 09:52, yunfei_zhou--- via ffmpeg-devel <ffmpeg-devel@ffmpeg.org> wrote:
> 
> Hi all,
> I hope this message finds you well.
> My name is Yunfei Zhou, and I am a Software Development Engineer at Alibaba DAMO Academy, where I focus on video coding and decoding optimization.
> We are currently exploring vectorization optimizations for HEVC decoding using the RISC-V Vector Extension (RVV) and are eager to contribute our work to the FFmpeg community. 
> Before proceeding, we would like to understand whether there are any existing or ongoing efforts in this area to avoid duplication and, ideally, align or collaborate with current initiatives.
> Could you kindly share an update on the current status of RISC-V RVV support for HEVC decoding in FFmpeg? Specifically, we’d appreciate any information regarding:
> 
> * 
> Recent developments or patches related to RVV-based HEVC optimizations,

Search RVV on code.ffmpeg.org

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls?state=open&type=all&labels=&milestone=0&project=0&assignee=0&poster=0&sort=&q=rvv

> 
> * 
> Planned future work in this domain, and
> 
> * 
> Available documentation or resources that could help us better understand the existing codebase and optimization strategies.
> Thank you very much for your time and support. We look forward to contributing to and learning from the FFmpeg community.

General document on contributions
https://www.ffmpeg.org/developer.html#Introduction

I have a simple summary on asm optimization

https://gist.github.com/quink-black/316ac42e0482f4158dd7df3003794576

> Best regards,
> Yunfei Zhou
> Alibaba DAMO Academy
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