# Open-Sora 1.2 Report

- [3D VAE](#3d-vae)
- [Rectified flow and model adaptation](#rectified-flow-and-model-adaptation)
- [Training data and stages](#training-data-and-stages)
- [Evaluation](#evaluation)

In Open-Sora 1.2 release, we train a 1.1B models on >20M data, supporting 0s~15s, 144p to 720p, various aspect ratios video generation.

## 3D VAE

## Rectified flow and model adaptation

## Training data and stages

## Evaluation