京东刚开源的 AI 视频模型 JoyAI-Echo 有点猛啊！ 直接把长视频「变脸变声」这个老大难痛点干掉了，还能用自然语言指令做局部修改，根本不用重新生成整个视频！ 最离谱的是，它居然能直接生成 5 分钟 长视频，而且完全开源！ 搞 AI 视频的道友们，又有新玩具了！快冲 GitHub 去玩儿吧！

xiaoer-videolab tackles open source ai in a way that could simplify your team's stack. One click on the toolbar grabs the current page's video into ~/Downloads — local yt-dlp daemon, 1800+ sites.…

🇨🇳JD open-sources JoyAI-Echo, a long audio-video generation framework Consistent character appearance & voice across 5min videos 7.5× faster powered by DMD Chat-based partial scene editing…