Prism for FreeVideo (preview)
English · 中文
Prepared weights of Prism (Tencent, MIT) for the Prism preview in FreeVideo. Prism animates a first frame into a 1280 × 720, 8.5-second video with matching sound (speech, sound effects and music). These files are laid out for FreeVideo's block-streaming engine, which runs Prism on a single NVIDIA RTX 30, 40 or 50 series GPU with 12 GiB of VRAM or more. FreeVideo downloads them for you when you select Prism during setup; you do not need to fetch them by hand.
Contents
| Folder | Size | Used by |
|---|---|---|
int8/ | 46.6 GiB | Every quality level. W8A8 INT8 Prism weights (128-wide Hadamard rotation, quantized from the original weights), the LightX2V Wan2.2-I2V 260412 distillation as an unmerged rank-256 LoRA for the Light level, the UMT5-XXL text encoder (bf16), the Wan2.1 VAE and the DAC audio decoder. |
bf16/ | 60.8 GiB | Optional, the Max level only: the original bf16 Prism weights. It reads the text encoder, tokenizer and VAEs from int8/. |
Each folder has a manifest.json with the size and SHA-256 of every file. Files are split per transformer block (expert_high/blocks/NN.safetensors, expert_low/…, audio/…, bridge/…) so that blocks that do not fit in VRAM can stream from RAM or disk.
Source: FrancisRing/Prism revision 347659c562dcc392c45dfe1673c051e7c62f57ac (preview_alpha), MOVA-360p, and the LightX2V 260412 distillation (rank-256 extraction by Kijai).
Quality levels in FreeVideo
| Level | Recipe | Time on one H200 |
|---|---|---|
| Light | 8 distilled steps; the audio follows the original model's features | about 6 min |
| Medium | 20 steps, original weights, CFG 5 | 15.5 min |
| High | 30 steps, original weights, CFG 5 | 23 min |
| Max | Prism's official 50-step recipe, bf16 weights and exact attention | 62.5 min |
See the FreeVideo Prism guide for the accelerations, the measured quality against the official sampler, and times under smaller VRAM and RAM.
Licenses
Prism weights and code: MIT, Copyright (C) 2026 Tencent. MOVA, Wan2.1 / Wan2.2 (including the UMT5-XXL text encoder and the Wan VAE) and the LightX2V distillation: Apache-2.0. Descript Audio Codec: MIT. These prepared weights are a derivative of those works and keep their licenses; see LICENSE.
中文
Prism（腾讯，MIT 许可证）为 FreeVideo Prism 预览版准备的权重。Prism 可以从一张首帧生成 1280 × 720、8.5 秒、带同步声音（人声、音效、音乐）的视频。文件按 FreeVideo 的分块流式加载引擎排列，可在 12 GiB 显存及以上的 NVIDIA RTX 30／40／50 系单卡上运行。安装 FreeVideo 时勾选 Prism 会自动下载，无需手动获取。
int8/（46.6 GiB）：所有档位共用。W8A8 INT8 权重（128 维 Hadamard 旋转，从原版权重量化），轻量档使用的 LightX2V Wan2.2-I2V 260412 蒸馏（未合并的秩 256 LoRA），UMT5-XXL 文本编码器（bf16），Wan2.1 VAE 和 DAC 音频解码器。bf16/（60.8 GiB）：可选，仅极致档使用的原版 bf16 权重；文本编码器、分词器和 VAE 读取int8/中的文件。
四个档位：轻量（蒸馏 8 步，H200 约 6 分钟）、标准（原版权重 20 步，15.5 分钟）、精细（30 步，23 分钟）、极致（官方 50 步，bf16 加精确注意力，62.5 分钟）。
许可证：Prism 权重与代码为 MIT（腾讯）；MOVA、Wan2.1／Wan2.2（含 UMT5-XXL 文本编码器与 Wan VAE）和 LightX2V 蒸馏模型为 Apache-2.0；Descript Audio Codec 为 MIT。详见 LICENSE。