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While adapting the H264 standard encoder x264 for RISC-V, we've identified several operations that are challenging to implement efficiently with existing RVV instructions. In some cases, implementations require too many instructions, potentially impacting encoder performance.
We're proposing new instructions for video encoding and decoding to boost RISC-V's performance in this domain. Our current focus on encoding for limited format standards may introduce some bias, so we're gathering instruction requirements here.
If you have new relevant needs, please share them. We may not have found the best RVV implementations, so if you have better solutions, we're open to discussion.
This is an open collaboration. All ideas and contributions are valuable as we work together to enhance RISC-V's video codec capabilities.