In April 2025, Alex Heretic delivered a targeted video encoding upgrade for the comfyanonymous/ComfyUI repository, focusing on backend development with Python. Alex replaced the existing AOM-AV1 encoder with SVT-AV1 in the WebM export workflow, introducing support for the yuv420p10le pixel format and configuring the AV1 encoding preset to 6. This technical approach improved encoding efficiency and ensured broader compatibility with downstream decoders. The work addressed performance and interoperability goals by refining the video saving process, leveraging Python and video encoding expertise. Over the month, Alex contributed one feature, demonstrating depth in backend and media processing within a short timeframe.